Title :
A Joint Timing Recovery and SNR Estimation Algorithm for LDPC-Coded Systems
Author :
Xiao-fei, Pan ; Xie-Dong, Hao
Author_Institution :
Inst. of Commun. Eng., PLAUST, Nanjing
Abstract :
The effects of both symbol synchronization error and SNR estimation on the LDPC decoding performance have been investigated. Based on the statistical properties of the LDPC decoding output value, a joint timing recovery and SNR estimation algorithm is given, which puts the symbol synchronization, SNR estimation and iterative decoding together by two cooperative loops. After several iterative steps, the estimated values of symbol synchronization error and SNR convergent rapidly, and little performance degradation has been observed than the system with foregone SNR and accurate symbol timing
Keywords :
iterative decoding; parity check codes; statistical analysis; synchronisation; LDPC-coded systems; SNR estimation algorithm; iterative decoding; joint timing recovery; performance degradation; statistical properties; symbol synchronization error; symbol timing; AWGN; Binary phase shift keying; Degradation; Estimation error; Iterative algorithms; Iterative decoding; Matched filters; Parity check codes; Pulse modulation; Timing;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
DOI :
10.1109/WiCOM.2006.144
