BER Analysis of OFDM Systems Impaired by DC Offset and Carrier Frequency Offset in Multipath Fading Channels
學年 96
學期 1
出版(發表)日期 2007-11-01
作品名稱 BER Analysis of OFDM Systems Impaired by DC Offset and Carrier Frequency Offset in Multipath Fading Channels
作品名稱(其他語言)
著者 Yih, Chi-hsiao
單位 淡江大學電機工程學系
出版者 IEEE Communications Society
著錄名稱、卷期、頁數 IEEE Communications Letters 11(11), pp.842-844
摘要 We perform bit-error-rate (BER) analysis of orthogonal frequency division multiplexing (OFDM) systems impaired by both direct current (DC) offset and carrier frequency offset (CFO) in multipath Rayleigh fading channels. Since the performance of OFDM systems is sensitive to the CFO, it is necessary to estimate and correct the CFO at the receiver. The existence of DC offset degrades the performance of CFO estimator and results in large residual CFO after compensation. Moreover, the process of CFO compensation spreads the DC offset energy and causes DC offset interference to all subcarriers. By deriving the BER formula for OFDM systems employing binary phase-shift keying modulation, the dependency of BER on the DC offset, CFO, and estimated CFO is accurately quantified. Simulation results validate the correctness of our theoretical analysis.
關鍵字 Bit error rate;Fading;Performance analysis;Degradation;Interference;Phase shift keying;Phase modulation;OFDM modulation;Phase estimation;Analytical models
語言 en_US
ISSN 1089-7798
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者
審稿制度
國別 USA
公開徵稿
出版型式 ,紙本
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