Least-squares carrier frequency offset estimation for coherent optical QPSK receivers
Refereed conference paper presented and published in conference proceedings

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其它資訊
摘要We investigate a carrier frequency offset (CFO) estimation algorithm for coherent optical quaternary phase-shift keying (QPSK) receivers. The algorithm utilizes the phase difference between the samples with different time-domain separations, so that the estimation accuracy can be significantly enhanced, compared with the algorithm that only compares the phase difference between adjacent samples. In a 28-GBaud coherent QPSK system, simulation results show that when 16 time spans and 512 samples are utilized, a uniform standard deviation of less than 3 MHz can be achieved for the CFO estimation error, when the optical signal-to-noise ratio is 11.5 dB.
著者Li M., Zhao J., Chen L.-K.
會議名稱2014 9th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2014
會議開始日23.07.2014
會議完結日25.07.2014
會議地點Manchester
會議國家/地區英國
出版年份2014
月份1
日期1
頁次40 - 43
國際標準書號9781479925810
語言英式英語
關鍵詞carrier frequency offset, coherent optical fiber communication, least-squares method, quaternary phase-shift keying

上次更新時間 2020-03-12 於 00:03