Title :
A new decoding algorithm of LDPC for COFDM-MIMO system
Author :
Baojian Gao ; Luwei Hao ; Qian Wu ; Xiaoning Zhao ; Yuhua Yang ; Liangguang Xu
Author_Institution :
Coll. of Inf. Sci. & Technol., Northwest Univ., Xi´an, China
Abstract :
The features of the received signal in the LDPC-COFDM MIMO system with space-time block coding(STBC) was analyzed in this paper, the signal estimate of the received signal obeys Gaussian distribution and it has nothing to do with the statistical distribution of the specific channel. According to the features of the received signal, a new decoding algorithm of LDPC for COFDM-MIMO system is proposed. The performance of the algorithm is detailed analyzed in the case of different bit rates and compared with other decoding schemes. The simulation results show that the algorithm can greatly reduce the number of iterations, and improve the decoding speed. Furthermore, the algorithm has the good decoding performances and the adaptability of different code rates.
Keywords :
Gaussian distribution; MIMO communication; OFDM modulation; decoding; parity check codes; space-time block codes; COFDM-MIMO system; Gaussian distribution; LDPC; coded orthogonal frequency division multiplexing; decoding algorithm; space-time block coding; Algorithm design and analysis; Channel estimation; Decoding; Iterative decoding; Joints; MIMO; LDPC; MIMO; OFDM; orthogonal space-time coding;
Conference_Titel :
Mechatronic Sciences, Electric Engineering and Computer (MEC), Proceedings 2013 International Conference on
Conference_Location :
Shengyang
Print_ISBN :
978-1-4799-2564-3
DOI :
10.1109/MEC.2013.6885263
