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Author: Kenny Chung Chung Wai Publisher: ISBN: Category : Decoders (Electronics) Languages : en Pages : 128
Book Description
"Reed-Solomon error correcting codes (RS codes) are widely used in communication and data storage systems to recover data from possible errors that occur during data transfer. A growing application of RS codes is Forward Error Correction (FEC) in the Optical Network (OTN G.709), which uses RS(255,239) to support the OTU-3 (43.018 Gbps) standard. There have been considerable efforts in the area of RS architecture for ASIC implementation. However, there appears to be little reported work on efficient RS codec (encoder and decoder) for Field Programmable Gate Arrays (FPGAs), which has increasing interests in industry. This thesis investigates the implementation and design methodology of the RS(255,239) codec on FPGAs. A portable VHDL codec is developed and synthesized for Xilinx's Virtex4 and Altera's StratixII. The FPGA architectures are analyzed and the required design methodologies are adopted to efficiently utilize the available resources. Unfortunately, due to the fixed size of FPGA devices, the RS decoder is not only constrained by the required timing of the system, but also by the size of the targeted device. This research will facilitate the decision-making process for selecting a reconfigurable device for a RS decoder, implementing the Berlekamp-Massey Algorithm"--Abstract.
Author: Kenny Chung Chung Wai Publisher: ISBN: Category : Decoders (Electronics) Languages : en Pages : 128
Book Description
"Reed-Solomon error correcting codes (RS codes) are widely used in communication and data storage systems to recover data from possible errors that occur during data transfer. A growing application of RS codes is Forward Error Correction (FEC) in the Optical Network (OTN G.709), which uses RS(255,239) to support the OTU-3 (43.018 Gbps) standard. There have been considerable efforts in the area of RS architecture for ASIC implementation. However, there appears to be little reported work on efficient RS codec (encoder and decoder) for Field Programmable Gate Arrays (FPGAs), which has increasing interests in industry. This thesis investigates the implementation and design methodology of the RS(255,239) codec on FPGAs. A portable VHDL codec is developed and synthesized for Xilinx's Virtex4 and Altera's StratixII. The FPGA architectures are analyzed and the required design methodologies are adopted to efficiently utilize the available resources. Unfortunately, due to the fixed size of FPGA devices, the RS decoder is not only constrained by the required timing of the system, but also by the size of the targeted device. This research will facilitate the decision-making process for selecting a reconfigurable device for a RS decoder, implementing the Berlekamp-Massey Algorithm"--Abstract.
Author: Sree Balaji Girisankar Publisher: ISBN: 9780355451276 Category : Languages : en Pages :
Book Description
Reed-Solomon (RS) codes are commonly used in the digital communication field due to their strong error correcting capabilities. In this thesis, a hardware architecture is proposed for the iterative soft-decision decoding of RS codes of prime lengths. The proposed GFT-RS-LDPC decoder is implemented on a Xilinx Virtex-7 FPGA for RS(127,119) code. The decoder has a moderate complexity and can be used for practical applications. The performance of the implemented GFT-RS-LDPC decoder was veried by comparing it with a fixed point and floating point model in MATLAB. Several optimizations to the architecture have been proposed to reduce the decoding latency and to increase the throughput upto 2.4 Gbps.
Author: Shehzad Jalaluddin Publisher: LAP Lambert Academic Publishing ISBN: 9783659589775 Category : Languages : en Pages : 364
Book Description
This project book claims the achievement of successfully implementation of RS encoder and decoder. First the transmitted message was received by the receiver without introducing errors; next step is to introduce the errors after that the position of error bits were identified and corrected using algorithms at the decoder side. The decoding is carried out by first calculating syndromes secondly determining error location polynomial and error magnitude polynomial, then finding error positions and calculating error values and correcting the message in its received pattern.
Author: Hossein Asghari Publisher: ISBN: Category : Languages : en Pages :
Book Description
The IDA can be implemented using Reed Solomon (RS) codes. Faster and more efficient codes can be used to implement IDA, but they are not currently implemented in hardware. The IDA can be used to design bandwidth-efficient FECC for a channel with burst noise. Our research presents the analysis, design, implementation, and testing of IDA. The IDA has been implemented in software using the RS codes. We compared its performance with that of TPC. Assuming a well-defined channel with long burst noise (i.e., many bit errors) and a large block size, we showed that if symbol-by-symbol reliability is not available (i.e., unable to detect burst noise boundaries), then IDA will perform better than TPC in terms of bit and block error rates. However, if symbol-by-symbol reliability is available, then IDA may perform as well as TPC in terms of block error rate, while TPC will always have a lower bit error rate.
Author: Orhan Gazi Publisher: ISBN: 9783030333812 Category : Error-correcting codes (Information theory) Languages : en Pages : 326
Book Description
This book provides a comprehensive explanation of forward error correction, which is a vital part of communication systems. The book is written in such a way to make the subject easy and understandable for the reader. The book starts with a review of linear algebra to provide a basis for the text. The author then goes on to cover linear block codes, syndrome error correction, cyclic codes, Galois fields, BCH codes, Reed Solomon codes, and convolutional codes. Examples are provided throughout the text. Provides a comprehensive treatment of forward error correction Includes examples through the book, which are solved in steps, making them easier to understand Ideal for researchers, professionals and students.
Author: Smritha Venkatadri Publisher: ISBN: Category : Languages : en Pages : 220
Book Description
In this thesis work, the error correction scheme of Reed Solomon (RS), used in the form of an algorithm digital data communication application is considered. The hardware implementation of (15,9) Reed Solomon (RS) error correction in terms of encoder-decoder is developed. Also, RS encoding and RS decoding without erasing code symbols is emphasized. The work presents the simple concepts of groups and fields, specifically Galois Fields to explain the algorithm. Prior to presenting RS codes, other block codes are discussed as an introduction to coding. The (15,9) RS coding is then explained. Various methods and concepts of encoding and decoding are presented for the (15,9) RS coding. The hardware realization for the encoder and decoder is outlined including the detailed analytics, which form the basis for the layout. The hardware design is implemented using VHSIC Hardware Descriptive Language (VHDL) which facilitates the design process from the algorithmic form to the final chip level design. The ultimate objective of this thesis work is to provide an efficient hardware for sending message bits across the channel and also detecting and correcting multiple errors that occur during the transmission.
Author: Keattisak Sripimanwat Publisher: Springer Science & Business Media ISBN: 9781402036866 Category : Technology & Engineering Languages : en Pages : 412
Book Description
Turbo Code Applications: a journey from a paper to realization presents c- temporary applications of turbo codes in thirteen technical chapters. Each chapter focuses on a particular communication technology utilizing turbo codes, and they are written by experts who have been working in related th areas from around the world. This book is published to celebrate the 10 year anniversary of turbo codes invention by Claude Berrou Alain Glavieux and Punya Thitimajshima (1993-2003). As known for more than a decade, turbo code is the astonishing error control coding scheme which its perf- mance closes to the Shannon’s limit. It has been honored consequently as one of the seventeen great innovations during the ?rst ?fty years of information theory foundation. With the amazing performance compared to that of other existing codes, turbo codes have been adopted into many communication s- tems and incorporated with various modern industrial standards. Numerous research works have been reported from universities and advance companies worldwide. Evidently, it has successfully revolutionized the digital commu- cations. Turbo code and its successors have been applied in most communications startingfromthegroundorterrestrialsystemsofdatastorage,ADSLmodem, and ?ber optic communications. Subsequently, it moves up to the air channel applications by employing to wireless communication systems, and then ?ies up to the space by using in digital video broadcasting and satellite com- nications. Undoubtedly, with the excellent error correction potential, it has been selected to support data transmission in space exploring system as well.
Author: Sudhakar Radhakrishnan Publisher: BoD – Books on Demand ISBN: 1789844428 Category : Computers Languages : en Pages : 228
Book Description
This book is intended to attract the attention of practitioners and researchers in academia and industry interested in challenging paradigms of coding theory and computer vision. The chapters in this comprehensive reference explore the latest developments, methods, approaches, and applications of coding theory in a wide variety of fields and endeavours. This book is compiled with a view to provide researchers, academicians, and readers with an in-depth discussion of the latest advances in this field. It consists of twelve chapters from academicians, practitioners, and researchers from different disciplines of life. All the chapters are authored by various researchers around the world covering the field of coding theory and image and video processing. This book mainly focusses on researchers who can do quality research in the area of coding theory and image and video processing and related fields. Each chapter is an independent research study, which will motivate young researchers to think about. These twelve chapters are presented in three sections and will be an eye-opener for all who systematic researchers in these fields.
Author: Víctor López Publisher: Springer ISBN: 3319301748 Category : Technology & Engineering Languages : en Pages : 301
Book Description
This book presents advances in the field of optical networks - specifically on research and applications in elastic optical networks (EON). The material reflects the authors’ extensive research and industrial activities and includes contributions from preeminent researchers and practitioners in optical networking. The authors discuss the new research and applications that address the issue of increased bandwidth demand due to disruptive, high bandwidth applications, e.g., video and cloud applications. The book also discusses issues with traffic not only increasing but becoming much more dynamic, both in time and direction, and posits immediate, medium, and long-term solutions throughout the text. The book is intended to provide a reference for network architecture and planning, communication systems, and control and management approaches that are expected to steer the evolution of EONs.
Author: Kenny Chung Chung Wai
Author: Kenny Chung Chung Wai
Author: Sree Balaji Girisankar
Author: Shehzad Jalaluddin
Author: Hossein Asghari
Author: Orhan Gazi
Author: Smritha Venkatadri
Author: Michelle Than
Author: Keattisak Sripimanwat
Author: Sudhakar Radhakrishnan
Author: Víctor López