non-binary error control coding for wireless communication and data storage


E book Particulars :
Language English
Pages 323
Format PDF
Dimension 6.4 MB

 

Non Binary Error Control Coding For Wireless Communication And Data Storage by Rolando Antonio Carrasco and Martin Johnston


 

With the rising significance of digital communications and knowledge storage, there’s a want for analysis within the space of coding idea and channel modelling to design codes for channels which can be energy restricted and/or bandwidth restricted. Typical examples of such channels are present in mobile communications (GSM, UMTS), mounted and cell broadband wi-fi entry (WiMax) and magnetic storage media. Our motivation to put in writing this ebook is twofold. Firstly, it’s supposed to offer PhD college students and researchers in engineering with a sound background in binary and nonbinary error-correcting codes

Overlaying completely different lessons of block and convolutional codes, band-width environment friendly coded modulation methods and spatial-temporal variety. Secondly, it is usually supposed to be appropriate as a reference textual content for postgraduate college students enrolled on Grasp’s-level diploma programs and tasks in channel coding. Chapter 1 of this ebook introduces the basics of knowledge idea and ideas, adopted by a proof of the properties of fading channels and descriptions of various channel fashions for mounted wi-fi entry, cell communications methods and magnetic storage.

 

In Chapter 2, primary mathematical ideas are offered in an effort to clarify nonbinary error-correction coding methods, equivalent to Teams, Rings and Fields and their properties, in an effort to perceive the development of ring trellis coded modulation (ring-TCM), ring block coded modulation (ring-BCM), Reed–Solomon codes and algebraic–geometric codes. Binary and non-binary block codes and their utility to wi-fi communications and knowledge storage are mentioned in Chapter 3, overlaying the development of binary and non-binary Bose–Chaudhuri–Hocquengem (BCH) codes, Reed–Solomon codes and binary and non-binary BCM codes.

Chapter 4 introduces the development strategies of algebraic–geometric (AG) codes, which require an understanding of algebraic geometry. The coding parameters of AG codes are in contrast with Reed–Solomon codes and their efficiency and complexity are evaluated. Simulation outcomes exhibiting the efficiency of AG and Reed–Solomon codes are offered on fading channels and on magnetic storage channels. Chapter 5 presents an alternate decoding algorithm referred to as checklist decoding, which is utilized to Reed–Solomon codes and AG codes.

 

Onerous-decision checklist decoding for these codes is launched first, utilizing the Guruswami–Sudan algorithm. That is then adopted by soft-decision checklist decoding, explaining the Kotter-Vardy algorithm for  Reed–Solomon codes and modifying it for AG codes. The efficiency and complexity of the checklist decoding algorithms for each Reed–Solomon codes and AG codes are evaluated. Simulation outcomes for hard- and soft-decision checklist decoding of those codes on AWGN and fading channels are offered and it’s proven that coding positive factors over standard hard-decision decoding might be achieved. A newer coding scheme referred to as the low-density parity verify (LDPC) code is launched in Chapter 6.

This is a vital class of block code able to near-Shannon restrict efficiency, constructed from a sparse parity verify matrix. We start by explaining the development and decoding of binary LDPC codes and prolong these rules to non-binary LDPC codes. Lastly, the discount of the decoding complexity of non-binary LDPC codes utilizing quick Fourier transforms (FFTs) is defined intimately, with examples. Chapter 7 begins with a proof of convolutional codes and reveals how they are often mixed with digital modulation to create a category of bandwidth-efficient codes referred to as TCM codes. The development of TCM codes outlined over rings of integers, referred to as ring-TCM codes, is defined, and the design of excellent ring-TCM codes utilizing a Genetic algorithm is offered.

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