Title :
Simplified receiver for LDPC-Coded interleave-division multiple-access (IDMA) system
Author :
Peng, Tao ; Yue, Xiao ; He, Xu ; Li, Shaoqian
Author_Institution :
Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Low density parity check (LDPC) codes can be applied to IDMA system, called LDPC-coded IDMA system, which is presented recently for combing the advantages of LDPC and IDMA. However, the high complexity for decoding and detection remains a problem. In this paper, a simplified receiver structure is proposed for LDPC-coded IDMA system. The main idea is based on a switch between LDPC and repetition code decoding processing, so as to make a better tradeoff between computational complexity and system performance. Simulation results show that the proposed receiver structure can achieve similar system performance but with reduced complexity by simplifying the processing of LDPC decoding.
Keywords :
channel coding; code division multiple access; computational complexity; decoding; interleaved codes; parity check codes; radio receivers; signal detection; LDPC decoding; LDPC-coded IDMA system; LDPC-coded interleave-division multiple-access system; computational complexity; low density parity check code; repetition code decoding processing; signal detection complexity; simplified receiver structure; wireless channel; Communications technology; Computational complexity; Computational modeling; Forward error correction; Iterative decoding; Multiaccess communication; Parity check codes; Switches; System performance; Transmitters;
Conference_Titel :
Communications, Circuits and Systems, 2009. ICCCAS 2009. International Conference on
Conference_Location :
Milpitas, CA
Print_ISBN :
978-1-4244-4886-9
Electronic_ISBN :
978-1-4244-4888-3
DOI :
10.1109/ICCCAS.2009.5250566
