Title :
Cooperative Signal Constellation for LDPC-Coded Relay System
Author :
Chen, Haiqiang ; Yu, Dongju ; Ma, Xiao
Author_Institution :
Dept. of Electron. & Commun. Eng., Sun Yat-sen Univ., Guangzhou, China
fDate :
7/1/2011 12:00:00 AM
Abstract :
In this letter, we first develop the cooperative constellation design for the single relay LDPC-coded system; then we describe the associated iterative detection/decoding scheme at the destination node. Simulation results show that, with the cooperative constellation and an appropriate power allocation strategy, the relay system can achieve a performance gain of about 1.6 dB around BER = 10-4.
Keywords :
channel allocation; cooperative communication; iterative decoding; parity check codes; signal detection; LDPC code; cooperative signal constellation; iterative decoding; iterative detection; power allocation; relay system; Constellation diagram; Decoding; Detectors; Iterative decoding; Performance gain; Relays; Resource management; Cooperative diversity; LDPC codes; relay channels; signal constellation;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.060111.110721
