Title :
Design of complexity-optimized bilayer lengthened LDPC codes for relay channels
Author :
Vahabzadeh, Osso ; Salehi, Masoud
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
Abstract :
We propose a technique to design complexity-optimized bilayer lengthened LDPC codes by generalizing EXIT charts to bilayer codes and applying a method to estimate the number of decoding iterations. Using this approach, we have designed bilayer lengthened LDPC codes with a relay decoding complexity reduced up to 60% compared to the highest rate codes designed in the literature.
Keywords :
channel coding; cooperative communication; decoding; parity check codes; EXIT charts; complexity-optimized bilayer lengthened LDPC code design; cooperative communication; decoding iteration approach; extrinsic-information transfer charts; relay channels; relay decoding complexity; Complexity theory; Decoding; Error probability; Iterative decoding; Optimization; Relays; The relay channel; bilayer density evolution; bilayer low-density parity-check (LDPC) codes; complexity-optimization; extrinsic-information transfer (EXIT) charts;
Conference_Titel :
Communication, Control, and Computing (Allerton), 2011 49th Annual Allerton Conference on
Conference_Location :
Monticello, IL
Print_ISBN :
978-1-4577-1817-5
DOI :
10.1109/Allerton.2011.6120279
