期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2013
卷号：3
期号：3
页码：278-280
出版社：International Journal of Soft Computing & Engineering
摘要：To overcome the effect of Intercarrier Interference (ICI) in OFDM system, the Zero-padded Conjugate scheme with adaptive receiver is proposed. In the conjugate algorithm first path contains the regular OFDM signal and in second path conjugate of first path is transmitted using Time Division multiplexing (TDM) for Time variant channels. Zero padding is done between two consecutive symbols to mitigate the effect of intercarrier interference to provide better time and frequency synchronization. Adaptive receiver uses block least mean-squared algorithm (BLMS) to adaptively update the frequency offset error. The simulation results are carried out using BPSK, QPSK and 16-QAM modulation techniques. The proposed scheme provides better BER rate than regular OFDM system, Conjugate cancellation (CC) and previous work for AWGN channel. Keywords: Orthogonal frequency division multiplexing (OFDM), Adaptive receiver, Block least mean-squared (BLMS) algorithm, Intercarrier Interference (ICI), frequency offset.
关键词：Orthogonal;frequency;division;multiplexing (OFDM); Adaptive receiver; Block least;mean-squared;(BLMS);algorithm;Intercarrier;Interference (ICI); frequency offset.
