Design of Complexity-Optimized Bilayer Lengthened LDPC Codes for Relay Channels
Presenters:
Lead Presenter: Osso Vahabzadeh
Additional Presenters: Masoud Salehi
Faculty Advisor/Principal Investigator: Masoud Salehi
Method of Presentation: Poster
Details:
Year: 2012
University Research Theme: Other
Abstract:
We propose a technique to design complexity-optimized bilayer lengthened low-density parity-check (LDPC) codes by generalizing extrinsic-information transfer (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. We also show that by implementing a low complexity relay decoder, our designed codes outperform the rate-optimized codes in a wide range of Eb/N0′s