Receiver DSP for OFDM Systems Impaired by Transmitter and Receiver Phase Noise.
ICC(2011)
摘要
This paper proposes a time-domain digital signal processing method for estimating and mitigating transmitter and receiver oscillator phase-noise effects in OFDM radio systems on the receiver side of the link. The idea is based on re-constructing time-domain OFDM signal at the receiver from initially detected symbols and using this as a reference in phase noise estimation. The knowledge of heavily low-pass nature of realistic phase noise processes is then utilized in the estimation process to improve the estimation quality. The algorithm can also be used iteratively, inside individual OFDM symbols, to further improve the accuracy of the obtained phase noise estimate. Performance analysis shows that the proposed algorithm outperforms existing state-of-the-art phase noise mitigation techniques, under both additive white Gaussian noise and extended ITU-R Vehicular A multipath channels.
更多查看译文
关键词
AWGN channels,OFDM modulation,intercarrier interference,interference suppression,phase estimation,phase noise,radio receivers,radio transmitters,radiofrequency oscillators,signal reconstruction,time-domain analysis,DSP receiver,OFDM radio systems,additive white Gaussian noise channel,extended ITU-R vehicular A multipath channels,intercarrier interference mitigation,phase noise estimation,phase noise mitigation techniques,receiver oscillator phase-noise effects,time-domain OFDM signal reconstruction,time-domain digital signal processing method,transmitter
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络