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| | Channel coding - Wikipedia, the free encyclopedia |
 | | bits in case of a binary channel) than the number strictly necessary for the samples, and having the receiver compute the most likely valid message that could have resulted in the received one. | | | telecommunications, channel coding is a pre-transmission mapping applied to a | | | Error correction is implemented by using more digits ( |
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http://en.wikipedia.org/wiki/Channel_coding
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| | Arithmetic Channel Coding |
| | Arithmetic coding is a source coding algorithm which encodes the output of any discrete stationary source into a sequence of independent and uniformly distributed random variables. | | | Though this may seem like an unusual channel coding algorithm, we show that every block code and every convolutional code can also be implemented by an arithmetic encoder. | | | The encoder is used to encode a binary symmetric source to be transmitted over a binary symmetric channel. |
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http://lcavwww.epfl.ch/~weidmann/acc.html
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| | Department TAIT - Lecture Channel Coding |
| | Channel coding is heavely based on algebra and probability theory. | | | In such systems errors can occur randomly and channel coding is applied to correct these errors. | | | This redundancy is used by the channel decoder to correct errors in the received data or in the data read from the storage medium. |
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http://tait.e-technik.uni-ulm.de/~schmidt/ccod.html
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| | Joint source channel coding |
| | This class of codes naturally extends codes based on binary codetrees and encompass codes which can be regarded as finite state automata including quasi-arithmetic codes. | | | Two algorithms have been designed: the first algorithm follows sequential decoding principles, in the spirit of the Fano algorithm used for decoding channel codes, with an extra difficulty here residing in the fact that transitions on the coding decision tree are associated to a varying number of bits. | | | Increasing the polyphase filter order adds memory to the code and an OFB can be interpreted as a convolutional code over the real or complex field. |
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http://www.irisa.fr/temics/Research/sourcechannel.shtml
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| | CCSR - EPSRC projects - Source and channel coding - final report summary |
| | The main objective of the work was to examine the possibility of combining both source and channel coding for mobile multimedia communications and to develop a communication protocol in the light of the error performance study of both speech and video coding algorithms used in conjunction with channel-coding techniques. | | | AWGN and Rayleigh channels, with and without multipath fading and diversity, were analysed and tested in the simulations and the results were used to evaluate the performance of the developed error-resilience schemes. | | | A detailed study of the error performance of the ITU-T H.263 video coding algorithm was carried out when the video stream was transmitted over a modelled mobile channel with different error patterns and various bit error rates. |
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http://www.ee.surrey.ac.uk/CCSR/EPSRC/Source-and-channel-coding
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| | [No title] |
| | The design of a speech coding algorithm is determined by the major requirements of high (subjective) speech quality, low bit rate, low computational complexity, high robustness against channel errors and low algorithmic delay. | | | The switching is based on a classification of the input signal. | | | Speech coding algorithms can be classified into waveform coders, vocoders and hybrid coders. |
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http://www.ind.rwth-aachen.de/research/speech_coding.html
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| | Joint Source-Channel Coding |
| | It is well known that using progressive codes in the presence of channel errors leads to disastrous results, since the first error renders the remainder of the bitstream useless. | | | Shannon's separation theorem states that source coding (compression) and channel coding (error protection) can be performed separately and sequentially, while maintaining optimality. | | | This experiment shows that even a benign channel can wreck havoc on a progressive bitstream, so some form of error protection (channel coding) is necessary. |
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http://www.utdallas.edu/%7Earia/mcl/joint
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| | 3rd GPP Multiplexing and channel coding (FDD) |
| | Channel coding scheme is a combination of error detection, error correcting, rate matching, interleaving and transport channels mapping onto/splitting from physical channels. | | | The encoded blocks are serially multiplexed so that the block with lowest index is output first from the channel coding block. | | | K-1 tail bits (value 0) shall be added to the end of the code block before encoding. |
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http://www.fortunecity.com/business/tisch/1301/id58.htm
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| | CCSR - Multimedia and DSP Research Group - Current Projects - Channel Coding |
| | These latter codes are constructed using a block interleaver and we have considered both binary and symbol based interleavers. | | | Since upper level need the coded sequence of lower levels, a highly reliable turbo re-encoder has to be designed. | | | In our simulations, we have considered (extended) RS codes of length 16 and, on a Gaussian channel, can achieve gains over the uncoded case of around 5dB at a BER of 10-5 with a maximum number of decoding attempts corresponding to around 103 operations per information bit. |
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http://www.ee.surrey.ac.uk/CCSR/Multimedia/Projects/Channel
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| | Jeffrey O. Coleman - EE590A Trellis Coded Modulation |
| | Typically students design our first trellis code, develop the idea of set partitioning for labeling a trellis with outputs, and derive the Viterbi (or other) algorithm for maximum-likelihood sequence estimation in the receiver. | | | EE507 result--that system performance is ultimately determined by three properties of the signal set, (1) its minimum Euclidean distance, (2) its error coefficient, and (3) its average energy--the idea of free codes of N -dimensional signals is examined. | | | (Little or no probability theory is used in the course.) Trellis-design concepts are developed based slightly on early work of Ungerboeck and heavily on the recent work on group trellis codes of Forney and Trott. |
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http://www.ee.mtu.edu/faculty/jeffc/courses/EE590As96.html
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| | MIMO Channels and Space-Time Coding |
| | Examples are studied by emulating the propagation environment of MIMO channels. | | | We present performance results of space-time codes, their optimal detection -- trellis codes, as well as the complexity of codes. | | | Next the multiple-input multiple-ouput (MIMO) channel is considered and related to the parallel Gaussian channel via the singular value decomposition (SVD). |
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http://www.ee.ualberta.ca/~schlegel/Lectures.html
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| | The Laws of Cryptography: Coding and Information Theory |
| | The simplest example of such a channel is the binary symmetric channel. | | | However, for decoding one must find the code word in the table that most closely matches the received code word (that has errors from the noise on the channel). | | | We will usually be using binary codes, that is, codes that use only the binary bits |
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http://www.cs.utsa.edu/~wagner/laws/coding.html
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| | A Tutorial on Convolutional Coding with Viterbi Decoding |
| | The process of adding this redundant information is known as channel coding. | | | Simulation source code examples of these algorithms follow the algorithm descriptions. | | | Following this introduction, I will provide a detailed description of the algorithms for generating random binary data, convolutionally encoding the data, passing the encoded data through a noisy channel, quantizing the received channel symbols, and performing Viterbi decoding on the quantized channel symbols to recover the original binary data. |
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http://pweb.netcom.com/~chip.f/viterbi/tutorial.html
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| | Channel Coding |
| | Codes to correct for errors in channel (versus source coding--compression) |
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http://www.cs.berkeley.edu/~kfall/EE122/lec06/tsld003.htm
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| | Storer Home Page |
| | In addition, we have considered the optimization of codings of this type. | | | This is an edited volume of papers by researchers in the field; topics include: vector quantization, fractals, optical algorithms, massively parallel hardware, and coding theory. | | | However, with on-line data compression where a sender and receiver are in lock-step maintaining constantly changing identical local memories, a single error on the communication channel or storage medium could cause the dictionaries of the encoder and decoder to differ, which in the worst case could corrupt all data to follow. |
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http://www.cs.brandeis.edu/~storer
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| | Research: Channel Coding for Mobile Communications, ANT, Universität Bremen |
| | Channel capacity of Shannon describes the maximum data rate that can be reliably (error-free) transmitted over a certain channel | | | Lecture 'Channel Coding' (ANT, University of Bremen) | | | Above mentioned codes are far away from reaching the channel capacity |
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http://antsrv2.ant.uni-bremen.de/research/coding
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| | DataCompression.info - Coding |
| | Two of the best known coding algorithms are Huffman Coding and Arithmetic Coding. | | | Coding algorithms are effective at compressing data when they use fewer bits for high probability symbols and more bits for low probability symbols. | | | Proposes a new set of universal codes, which he dubs taboo codes, as well as new optimization algorithms for (Start, Step, Stop) codes. |
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http://www.datacompression.info/Coding.shtml
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| | Tiffany Jing Li's Research Projects -- Advanced Error Correction Coding and Modulation |
| | Performance and analysis of PA codes on Rayleigh fading channels with and without channel state information (CSI): maximum likelihood (ML) bounds to characterize the error floors, thresholds computation using Density Evolution (DE). | | | We investigated spectral shape; quantified interleaving gain and derived a tight upper bound for evaluating the performance of the codes under the maximum likelihood decoding. | | | Simulations show that they achieve bit error rate (BER) comparable to that of LDPC codes yet with better error burstiness. |
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http://www.eecs.lehigh.edu/~jingli/project.html
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| | The Alice and Bob After Dinner Speech |
| | The other thing coding theorists are concerned with is information. | | | So I thought it would be a good idea if I gave you a sort of instant, five minute graduate course in coding theory. | | | I would like to finish with a few words on the impact that information technology is having on our everyday lives. |
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http://downlode.org/etext/alicebob.html
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| | Michelle Effros (Caltech) : Publications |
| | A KLT can be arbitrarily worse than the optimal transform for transform coding. | | | Linear network codes: a unified framework for source, channel, and network coding. | | | Low complexity code design for lossless and near-lossless side information source codes. |
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http://www.ee2.caltech.edu/Faculty/effros/pubs.html
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| | Information Processing Group -- Overview |
| | Developing and analyzing channel codes for the Deep Space Network has been a staple of the group from the beginning. | | | We also have renewed an interest in coding for optical channels. | | | We have recently developed a progressive wavelet image compression algorithm, ICER, which has been implemented as the compression technology for Mars Exploration Rover. |
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http://coding.jpl.nasa.gov
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| | Efficient Channel Coding - About |
| | Efficient Channel Coding (ECC) was founded in 1996 with the goal of developing, manufacturing, and marketing advanced communications products and services. | | | ECC’s “on-the-fly” waveform switching makes this possible and does so without the loss of data or synchronization. | | | © Copyright 2003, 2004, 2005, Efficient Channel Coding, Inc. All Rights Reserved |
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http://www.efficientchannelcoding.com/about.html
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| | GSM Channel Coding |
| | The coding is complex in order to have the maximum chance to detect and correct the errors encountered in a typical propagation path. | | | The output of the speech coder is encrypted, coded and interleaved in a sophisticated way to allow Forward Error Correction to be applied. | | | The overall data rate for the radio channel is 270kb/s. |
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http://www.mobileoffice.co.za/gsm-channelcoding.htm
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| | Shannon's Noisy Channel Coding Theorem |
| | This means that we can take 400 information bits and map them into a code of length 1000 bits. | | | where â ( X ; Y) is the mutual information between the channel input X and the output Y. | | | Therefore, it is possible to send 0.4 bits per channel through the channel reliably. |
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http://cnx.rice.edu/content/m10180/latest
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| | Publications (by topic area) |
| | Proceedings International Conference on Information Technology: Coding and Computing. | | | Pradhan S.S., and Ramchandran, K. Group-theoretic construction and analysis of generalized coset codes for symmetric/asymmetric distributed source coding. | | | On Seamless Digital Upgrade of Analog Transmission Systems using Coding with Side Information. |
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http://www.eecs.berkeley.edu/~kannanr/publications/pubs_topic_area.htm
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| | publications |
| | Médard, "A Coding Theorem for Multiple-Access Decorrelating Channels", IEEE ISIT 1998, page 215. | | | Médard, A.J. Goldsmith, "Capacity of Time-Varying Channels with Side Information at the Sender and the Receiver", Miniconference on Information Theory, ICC, 1999. | | | Médard, A.J. Goldsmith, "Capacity of Time-varying Channels with Channel Side Information", in Proceedings of ISIT 1997, pg. |
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http://web.mit.edu/medard/www/pubs.html
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| | Source-Channel Coding |
| | Gadkari and K. Rose, "Analysis and Design of Embedded Channel Codes," Proc. | | | Regunathan and K. Rose, "Robust Image Compression for Transmission Over Time-Varying Channels," 31st Asilomar Conference on Signals Systems and Computers, November 1997. | | | Gadkari and K. Rose, "Time Division Versus Superposition Coded Modulation Schemes for Unequal Error Protection," IEEE Transactions on Communications., vol. |
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http://scl.ece.ucsb.edu/html/papers_C.htm
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| | Efficient Channel Coding - Careers |
| | Must be proficient in RTL coding in Verilog, synthesis and static timing analysis | | | Must be proficient in RTL coding, synthesis and static timing analysis | | | Efficient Channel Coding offers a dynamic work environment, stock options, outstanding growth potential, and an excellent benefits package. |
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http://www.eccincorp.com/careers.html
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| | Efficient Channel Coding - Press Center |
| | Efficient Channel Coding Develops Turbo Code Library for the Elanix SystemView Software | | | Efficient Channel Coding Wins Contract from Spacecode LLC to Develop and License Internet Over Satellite Consumer Terminal Electronics | | | Efficient Channel Coding and Telesat to Demonstrate a World's First for DVB-S2 |
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http://www.efficientchannelcoding.com/presscenter.html
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| | ICASSP 2005 |
| | Practical schemes for distributed source/channel coding aim at exploiting the dependences existing between the different sources in the system to either compress or transmit such sources at information rates close to the theoretical limits. | | | Title: Design of Optimal Quantizers for Distributed Coding of Noisy Sources | | | Title: Distributed Source and Joint Source-Channel Coding: From Theory to Practice |
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http://www.icassp2005.com/SS_05.asp
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| | Research -- Wei Zhong's Webpage |
| | Within the 2 year research and study, I have been working in the area of channel coding and distributed source coding. | | | The idea of turbo-like codes matches what Shannon proposed, the random-like codes. | | | Published papers have been focusing on iterative decoding, code design, LDGM code, correlated sources compression and joint source-channel coding. |
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http://www.eecis.udel.edu/~zhong/research.htm
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| | Bibliography for R. V. Cox (rvc) |
| | Cox, R. Hagenauer, J., Seshadri, N. and Sundberg, C-E. ``Combined source and channel coding using a subband coder,'' Proc. | | | Cox, R. Hagenauer, J., Seshadri, N. and Sundberg, C.-E. ``A sub-band coder designed for combined source and channel coding,'' Proc. | | | Accardi, A. and Cox, R. ``A modular approach to speech enhancement with an application to speech coding,'' Proc. |
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http://www.research.att.com/resources/biblios/rvc.html
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| | Channel Coding |
| | in CDMA operates by applying a half-rate convolutional code to the input data, and interleaving the output. | | | Other topics in our resources on CDMA related to Channel Coding include: | | | In a communications system, error control is necessary for messages that require high reliability, or if the transmission medium is prone to error. |
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http://cdma.argospress.com/channeycodin.htm
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| | COSAC Project |
| | Signal Processing for Source and Channel Coding (COSAC) Project | | | There are joint activities between COSAC project and FAMBAC project at Helsinki University of Technology. | | | Signal Processing for Source and Channel Coding (for short Coding jointly the Source and Channel (COSAC)) is a TEKES research project, the research being carried on at Signal Processing Laboratory, Tampere University of Technology. |
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http://www.cs.tut.fi/~tabus/COS.html
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| | A Short Course in Information Theory |
| | This course will discuss the remarkable theorems of Claude Shannon, starting from the source coding theorem, which motivates the entropy as the measure of information, and culminating in the noisy channel coding theorem. | | | Along the way we will study simple examples of codes for data compression and error correction. | | | These notes do not include the main part of lecture 1, viz, the 45 minute overview of the noisy channel coding theorem. |
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http://www.inference.phy.cam.ac.uk/mackay/info-theory/course.html
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| | CSCE 961 - Coding Theory |
| | 17th Jan, 03 - BSC, Probability of error, Channel Coding Theorem (Noisey Coding Theorem) for BSC (statement and no proofs). | | | 18th Apr, 03 - Truncated Viterbi Algorithm for decoding convolutional codes | | | 05th Mar, 03 - Unique decoding of Reed-Solomon codes: Berlekamp-Welch Algorithm |
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http://www.cse.unl.edu/~vinod/CSCE961/covered.html
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| | JOINT SOURCE-CHANNEL CODING AND RELATED TECHNIQUES |
| | The remainder of the paper is devoted to a review of existing joint source-channel coding techniques. | | | The principle of joint source-channel coding is then motivated by the design constraints present in real-world systems. |
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http://www.sitel.org/abs1_01_b.htm
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| | newsgroup on channel coding? |
| | On Tue, 16 Mar 2004 17:09:06 +0100, "Hur" channel coding (and its =implementation)? | | | hello Are there any forum (on-line) or newsgoup on channel coding (and its implementation)? |
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http://www.seriousliving.net/new-3434693-1132.html
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| | Syllabus of course: Coding fo Fading Channel |
| | Properties of convolutional codes, encoding, trellis diagram, minimum free distance, Viterbi algorithm, error performance, convolutional code design, decoding for fading channels, channel state information for decoding of convolutional codes, examples. | | | Concept of multidimensional trellis codes, set partitioning, code construction, error performance, examples of multidimensional trellis codes, multidimensional trellis codes for fading channels, design of multidimensional trellis codes for fading channels, set parttitioning, error performance. | | | Properties of block coded modulation, trellis structure of block codes, trellis structure of cyclic codes, multilevel code construction, component code selection, maximum likelihood decoding, multistage decoding, error performance, block coded modulation for fading channels, code design, error performance. |
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http://www.ee.oulu.fi/~harza/branca.htm
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| | Speech and Channel Coding |
| | As a result, the channel encoded bit sequence is now 378+78=456 bits long. | | | GSM uses a convolution codes to encode digital speech representations. | | | Cyclic codes are linear codes (the sum of any two codes is also a codeword), as we have seen in class. |
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http://www.ecf.utoronto.ca/~nazizi/gsm/coding
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| | ECE 582 INFORMATION THEORY AND CHANNEL CODING |
| | Mutual information, channel capacity, the channel coding theorem. | | | Encoding/decoding of information, linear codes, error correction, Hamming codes, trellis representation of linear codes, convolutional codes, optimal trellis search algorithms. | | | The channel coding theorem, linear error control codes, and algebraic error correction coding. |
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http://www.ee.ualberta.ca/courses/ECE582.html
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| | IQI Courses |
| | Overview of classical information theory, compression of quantum information, transmission of quantum information through noisy channels, quantum error-correcting codes, quantum cryptography and teleportation. | | | Mathematical models for information sources and communication channels, including memoryless, first-order Markov, ergodic, and Gaussian. | | | This course, when combined with EE 112 abc, EE/Ma 127 ab, EE 161, and/or EE 167 should prepare the student for research in information theory, coding theory, wireless communications, and/or data compression. |
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http://www.iqi.caltech.edu/courses.html
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| | A Whirlwind Tour of Channel Coding: with Emphasis on Iterative Decoding |
| | through imperfect channels by adding redundancy to the data. | | | There are two important classes of such coding methods — block codes and convolutional codes. | | | These advances, which bring coding gain close to the theoretical limitation of what is possible, entail the use of iterative decoding techniques which we demonstrate by using turbo-code and low-density parity-check (LDPC) code examples. |
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http://www.milcom.org/2004/t_sklar.htm
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| | Sergio Verdu Source Channel Coding |
| | Shamai (Shitz) and S. Verdú,, "Capacity of Channels with Side Information," | | | A separation theorem for lossy source-channel coding with side information is given in (see also 1.1.1) | | | Implicit in the direct source-channel coding theorem is the fact that reliable transmission can be accomplished by separate source and channel coding. |
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http://www.princeton.edu/~verdu/sourcechannel.html
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| | Info Channel - Coding |
| | Targeted at fruit packers, the solution uses integrated scanning, in-motion weighing and case coding, along with database software... | | | Paxar RFID Solution Chosen by VF Paxar Corporation, a global leader providing merchandising systems, bar code, RFID and identification technologies for apparel...( Modern Materials Handling, 03/05). | | | The EasyPrint mlp 32 online traversing thermal system facilitates multiple package coding and bar-code requirements on...( Bell-Mark Corp, 04/05). |
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http://www.packagingdigest.com/newsite/InfoChannel/info_code.php?footer_id=1
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| | Joint Source-Channel Subband Coding Of Images (ResearchIndex) |
| | This corresponds to casting the conventional bit allocation problem in a joint source-channel coding context. | | | Multiple Description Subband Coding - Murari Srinivasan And (1998) | | | 265 Wavelets and Subband Coding (context) - Vetterli, Kovacevic - 1995 |
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http://citeseer.ist.psu.edu/212658.html
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| | Cellular Technologies Of The World |
| | By using TDMA instead of FDMA, IS-54 increases the number of users from 1 to 3 per channel (up to 10 with enhanced TDMA). | | | The UltraPhone system allows 4 conversations to operate simultaneously on every 25kMhz-spaced channel. | | | is characterized by high capacity and small cell radius, employing spread-spectrum technology and a special coding scheme. |
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http://www.cellular.co.za/celltech.htm
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