Download or read book High Performance Codes for AWGN Erasure and Burst Channels written by Shumei Song and published by . This book was released on 2007 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Algebraic Construction of LDPC Codes for the AWGN and Erasure Channels written by Ying Yu Tai and published by . This book was released on 2006 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance of Turbo Codes on AWGN and Fading Channels written by Raja Sekhar Bachu and published by . This book was released on 2000 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exit Charts Based Analysis and Design of Rateless Codes for the Erasure and Gaussian Channels written by Sabaresan Mothi Venkatesan and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Luby Transform Codes were the first class of universal erasure codes introduced to fully realize the concept of scalable and fault0́0tolerant distribution of data over computer networks, also called Digital Fountain. Later Raptor codes, a generalization of the LT codes were introduced to trade off complexity with performance. In this work, we show that an even broader class of codes exists that are near optimal for the erasure channel and that the Raptor codes form a special case. More precisely, Raptorlike codes can be designed based on an iterative (joint) decoding schedule wherein information is transferred between the LT decoder and an outer decoder in an iterative manner. The design of these codes can be formulated as a LP problem using EXIT Charts and density evolution. In our work, we show the existence of codes, other than the Raptor codes, that perform as good as the existing ones. We extend this framework of joint decoding of the component codes to the additive white Gaussian noise channels and introduce the design of Rateless codes for these channels. Under this setting, for asymptotic lengths, it is possible to design codes that work for a class of channels defined by the signal0́0to0́0noise ratio. In our work, we show that good profiles can be designed using density evolution and Gaussian approximation. EXIT charts prove to be an intuitive tool and aid in formulating the code design problem as a LP problem. EXIT charts are not exact because of the inherent approximations. Therefore, we use density evolution to analyze the performance of these codes. In the Gaussian case, we show that for asymptotic lengths, a range of designs of Rateless codes exists to choose from based on the required complexity and the overhead. Moreover, under this framework, we can design incrementally redundant schemes for already existing outer codes to make the communication system more robust to channel noise variations.
Download or read book Introduction to Convolutional Codes with Applications written by Ajay Dholakia and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Convolutional Codes with Applications is an introduction to the basic concepts of convolutional codes, their structure and classification, various error correction and decoding techniques for convolutionally encoded data, and some of the most common applications. The definition and representations, distance properties, and important classes of convolutional codes are also discussed in detail. The book provides the first comprehensive description of table-driven correction and decoding of convolutionally encoded data. Complete examples of Viterbi, sequential, and majority-logic decoding technique are also included, allowing a quick comparison among the different decoding approaches. Introduction to Convolutional Codes with Applications summarizes the research of the last two decades on applications of convolutional codes in hybrid ARQ protocols. A new classification allows a natural way of studying the underlying concepts of hybrid schemes and accommodates all of the new research. A novel application of fast decodable invertible convolutional codes for lost packet recovery in high speed networks is described. This opens the door for using convolutional coding for error recovery in high speed networks. Practicing communications, electronics, and networking engineers who want to get a better grasp of the underlying concepts of convolutional coding and its applications will greatly benefit by the simple and concise style of explanation. An up-to-date bibliography of over 300 papers is included. Also suitable for use as a textbook or a reference text in an advanced course on coding theory with emphasis on convolutional codes.
Download or read book Algebraic Coding written by Gerard Cohen and published by Springer Science & Business Media. This book was released on 1994-04-28 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the changes in the regional infrastructure within the European automobile industry. It is based on the increased competition between the European automobile industry and its suppliers, which has several causes: the intensified activities of Japanese competitors in Europe, leading to faster adaptation to new production concepts in European companies (lean production); concentration of suppliers in connection with these new concepts; new opportunities and competition as a result of the home market and the opening of Eastern Europe.
Download or read book Design and Analysis of Short Packet and Concatenated Coded Communication Systems written by Kar Peo Yar and published by . This book was released on 2006 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation on Digital Fountain Codes Over Erasure Channels and Additive White Gaussian Noise Channels written by Weizheng Huang and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Algebraic and Combinatorial Constructions of Efficiently Encodable Quasi cyclic LDPC Codes written by Lan Lan and published by . This book was released on 2006 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conference Record written by and published by . This book was released on 2004 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detection and Coding Techniques for Partial Response Channels written by Vladimir Dorfman and published by . This book was released on 2003 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Algebraic Constructions of High Performance and Efficiently Encodable Non binary Quasi cyclic LDPC Codes written by Bo Zhou and published by . This book was released on 2008 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 2004 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Communications computers Teamed for the 90 s written by and published by . This book was released on 1986 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbo and LDPC Coding for the AWGN and Space time Channel written by Andrew Mark Guidi and published by . This book was released on 2006 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main focus of this thesis is the investigation of a number of different space-time coding scenarios based on predominately the application of turbo codes and low density parity check (LDPC) codes to a multi-antenna system. Both codes structures make use of the BPSK stacking construction that readily applies binary linear codes to the space-time channel while also providing a check on the suitability of the resulting code in order to achieve maximum diversity advantage. The turbo-like codes investigated are based upon the application of a parallel concatenated scheme to directly map the data and parity bits generated by the encoder to one of three possible antennas outputs. It is further highlighted in this case how the interleaver plays a crucial role in determining overall performance as this determines whether the resulting space-time codes achieve maximum diversity advantage or otherwise. Performance results are presented for a number of different constituent codes and interleaver design. The LDPC space-time codes considered herein again are based on satisfying the BPSK stacking construction to ensure full diversity advantage is achieved. The code design is based on a recursive application of the Shur complement in order to devise block based codes that have a resulting parity check matrix that is relatively sparse. A number of various code constructions that satisfy the conditions are then simulated in order to determine performance in both slow and fast fading channel conditions. This thesis also investigates the use of certain non-linear codes termed "chaotic codes" and their application as constituent codes within a parallel concatenated (turbo-like) coding scheme. Performance of such codes is shown to be readily analysed via the use extrinsic information transfer (EXIT) techniques. The modified codes are simulated over an AWGN channel using BPSK modulation for a number of different block lengths.
Download or read book Coding and Signal Processing for Magnetic Recording Systems written by Bane Vasic and published by CRC Press. This book was released on 2004-11-09 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt: Implementing new architectures and designs for the magnetic recording read channel have been pushed to the limits of modern integrated circuit manufacturing technology. This book reviews advanced coding and signal processing techniques and architectures for magnetic recording systems. Beginning with the basic principles, it examines read/write operations, data organization, head positioning, sensing, timing recovery, data detection, and error correction. It also provides an in-depth treatment of all recording channel subsystems inside a read channel and hard disk drive controller. The final section reviews new trends in coding, particularly emerging codes for recording channels.
Download or read book Channel Coding Techniques for Wireless Communications written by K. Deergha Rao and published by Springer Nature. This book was released on 2019-11-22 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the latest channel coding techniques, MIMO systems, and 5G channel coding evolution. It provides a comprehensive overview of channel coding, covering modern techniques such as turbo codes, low-density parity-check (LDPC) codes, space–time coding, polar codes, LT codes, and Raptor codes as well as the traditional codes such as cyclic codes, BCH, RS codes, and convolutional codes. It also explores MIMO communications, which is an effective method for high-speed or high-reliability wireless communications. It also examines the evolution of 5G channel coding techniques. Each of the 13 chapters features numerous illustrative examples for easy understanding of the coding techniques, and MATLAB-based programs are integrated in the text to enhance readers’ grasp of the underlying theories. Further, PC-based MATLAB m-files for illustrative examples are included for students and researchers involved in advanced and current concepts of coding theory.
