Joint carrier synchronization and equalization for OFDM systems over multipath fading channel

Chih Feng Wu, Muh Tian Shiue, Chorng Kuang Wang

研究成果: 書貢獻/報告類型會議論文篇章同行評審

7 引文 斯高帕斯(Scopus)

摘要

In this paper, a joint carrier synchronization and equalization algorithm is proposed for OFDM systems in the tracking stage. Significantly, the carrier synchronization scheme is a dual-loop, which is composed of an outer and an inner loops, with the multirate processing to eliminate the carrier frequency offset and the channel phase variation. In addition, the gain equalization loop is employed to compensate the magnitude distortion on each subchannel in the frequency domain. Based on MMSE criterion, the cost function of the joint algorithm is presented to minimize the decision error on each subchannel and, further, lower the uncoded BER concurrently. Besides, the subchannel SDR is derived in terms of the powers of the phase and gain jitters. Considering a figure of merit for CFO RMS error, the improvement for the joint algorithm is about 1-order at least compared with the considered algorithms. According to BER derivation and simulation in an AWGN channel, SNR losses at BER=10-6 from the theory to the derivation and simulation of the proposed algorithm are about 0.1 dB (derivation) and 0.4 dB (simulation). The proposed joint algorithm can estimate and compensate the carrier frequency offset as well as channel distortion accurately.

原文???core.languages.en_GB???
主出版物標題The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
DOIs
出版狀態已出版 - 2008
事件68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference - Calgary, AB, Canada
持續時間: 21 9月 200824 9月 2008

出版系列

名字IEEE Vehicular Technology Conference
ISSN(列印)1550-2252

???event.eventtypes.event.conference???

???event.eventtypes.event.conference???68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference
國家/地區Canada
城市Calgary, AB
期間21/09/0824/09/08

指紋

深入研究「Joint carrier synchronization and equalization for OFDM systems over multipath fading channel」主題。共同形成了獨特的指紋。

引用此