{"product_id":"constrained-coding-and-soft-iterative-decoding-von-john-l-fan","title":"Constrained Coding and Soft Iterative Decoding","description":"\n                \u003cem\u003eConstrained Coding and Soft Iterative Decoding\u003c\/em\u003e is the  first work to combine the issues of constrained coding and soft  iterative decoding (e.g., turbo and LDPC codes) from a unified point  of view. Since constrained coding is widely used in magnetic and  optical storage, it is necessary to use some special techniques  (modified concatenation scheme or bit insertion) in order to apply  soft iterative decoding. \u003cbr\u003e  Recent breakthroughs in the design and decoding of error-control codes  (ECCs) show significant potential for improving the performance of  many communications systems. ECCs such as turbo codes and low-density  parity check (LDPC) codes can be represented by graphs and decoded by  passing probabilistic (a.k.a. `soft') messages along the edges of the  graph. This \u003cem\u003emessage-passing algorithm\u003c\/em\u003e yields powerful decoders  whose performance can approach the theoretical limits on capacity.  This exposition uses `normal graphs,' introduced by Forney, which  extend in a natural manner to block diagram representations of the  system and provide a simple unified framework for the decoding of  ECCs, constrained codes, and channels with memory. Soft iterative  decoding is illustrated by the application of turbo codes and LDPC  codes to magnetic recording channels. \u003cbr\u003e  For magnetic and optical storage, an issue arises in the use of  constrained coding, which places restrictions on the sequences that  can be transmitted through the channel; the use of constrained coding  in combination with soft ECC decoders is addressed by the  \u003cem\u003emodified\u003c\/em\u003e \u003cem\u003econcatenation scheme\u003c\/em\u003e also known as `reverse  concatenation.' Moreover, a soft constraint decoder yields additional  coding gain from the redundancy in the constraint, which may be of  practical interest in the case of optical storage. In addition, this  monograph presents several other research results (including the  design of sliding-block lossless compression codes, and the decoding  of array codes as LDPC codes). \u003cbr\u003e  \u003cem\u003eConstrained Coding and Soft Iterative Decoding\u003c\/em\u003e will prove useful  to students, researchers and professional engineers who are interested  in understanding this new soft iterative decoding paradigm and  applying it in communications and storage systems.\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9780792374558\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9781461355977\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Hardcover - 9780792374558","offer_id":51095891462,"sku":"9780792374558","price":106.99,"currency_code":"EUR","in_stock":true},{"title":"Softcover - 9781461355977","offer_id":39415684497501,"sku":"9781461355977","price":106.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/0034af53-cb67-4b26-976d-1b2d72063c26.jpg?v=1766639036","url":"https:\/\/shop.autorenwelt.de\/en\/products\/constrained-coding-and-soft-iterative-decoding-von-john-l-fan","provider":"Autorenwelt Shop","version":"1.0","type":"link"}