Abstract:For Orthogonal Frequency-Division Multiplexing (OFDM) communication systems with high mobile speed, the frequency offset caused by Doppler frequency offset and the frequency differences will introduce Inter-Carriers Interference (ICI), which degrades the performance. Based on the analysis of the interference mechanism of ICI, a high efficient ICI cancellation scheme based on differential coding in terms of channel estimation is introduced. This scheme improves the spectrum usage efficiency of ICI self-cancellation. And compared with the normal OFDM system, the proposed scheme has 4dB channel estimation improvement and avoid the error floor caused by ICI.
刘解华; 杨东凯; 常青; 张其善. 基于差分编码的OFDM系统ICI消除方法的研究[J]. 电子与信息学报, 2007, 29(7): 1529-1532 .
Liu Jie-hua; Yang Dong-kai; Chang qing; Zhang Qi-shan. Research on Inter-carrier Interference Cancellation Based on Differential Coding in OFDM System. , 2007, 29(7): 1529-1532 .