Timing error recovery for LDPC-coded systems
Haige Xiang · Journal of China Institute of Communications · 2005
Based on the statistical properties of LDPC decoding algorithm, the effect of the symbol synchronization error on the decoding performance was investigated in detail. A new timing error recovery algorithm was developed based on the algorithm in [3]. The new algorithm estimated the timing error with four times of over-sampling rate, and the estimated value of the signal with precise timing was given by interpolation of the over-sampled data. With the proposed algorithm, little performance degradation has been observed for LDPC coded system with severe symbol timing error when working at very low SNR.