Estimation Algorithm of Interference Frequency Offset In PCMA System
For cooperative received Paired Carrier Multiple Access(PCMA)signals,a new algorithm for frequency offset estimation is proposed.The local sample sequence is used as auxiliary data,and frequency offset is estimated based on the discrete Fourier transform(DFT)of the autocorrelation of the sequence,which obtained by multiplying the auxiliary data and mixed signal.The modified Cramer-Rao Bound(MCRB)of frequency offset is derived,which provides a theoretical basis for the performance evaluation of the proposed algorithm.The simulation results show that,compared with the M&M algorithm,the proposed algorithm gain a lower signal to noise ratio(SNR)threshold.It is very suitable for frequency offset estimation of PCMA signal in a low SNR.
PCMA frequency offset estimation low signal to noise ratio (SNR) MCRB
Boxiang Song Jiping Li Peng Chen
College of Communications Engineering,PLA University of Science and Technology Nanjing,China
国际会议
重庆
英文
1094-1097
2017-03-25（万方平台首次上网日期，不代表论文的发表时间）