A Systematic Construction of LDPC Codes for Relay Channel in Time-Division mode

Author

De Baynast, Alexandre ; Chakrabarti, Arnab ; Sabharwal, Ashutosh ; Aazhang, Behnaam

Author_Institution

Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX

fYear

2006

fDate

Oct. 29 2006-Nov. 1 2006

Firstpage

722

Lastpage

726

Abstract

We address the problem of low density parity-check (LDPC) code design for relay channel in time-division mode based on a distributed strategy: In the first time slot, the source transmits part of the codeword. The relay and the destination receive it but only the relay can decode it. In the second time slot, the relay transmits the additional redundant bits to the destination. The destination is able to decode the transmitted codeword based on the data received in both time slots. The asymptotic performance of the LDPC codes that we designed are as close as 0.6 decibel from the theoretical limit.

Keywords

decoding; parity check codes; telecommunication channels; time division multiplexing; LDPC code; decoding; distributed strategy; low density parity-check code design; redundant bit; relay channel; systematic construction; time slot; time-division mode; Additive white noise; Bandwidth; Convergence; Decoding; Demodulation; Parity check codes; Relays; Stability; Time sharing computer systems; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2006. ACSSC '06. Fortieth Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

1-4244-0784-2

Electronic_ISBN

1058-6393

Type

conf

DOI

10.1109/ACSSC.2006.354843

Filename

4176653