A Simple Channel Shortening Equalizer for Wireless TDD-OFDM Systems
In a Orthogonal Frequency Division Multiplexing (OFDM) system, a channel shortening equalizer (CSE) combats multipath interferences by shortening the channel delay spread to the desired length. In this paper, a simple and efficient channel shortening pre-equalizer for a wireless OFDM system is proposed. The equalizer takes advantages of the characteristics of a wireless channel which can be represented as a finite impulse response (FIR) filter and is an all zero system. It eliminates the zeros of FIR to effectively reduce the length of channel impulse response. The proposed equalizer simplifies wireless OFDM transceivers. The simulation results show the validity of the proposed preequalizer.
wireless communication OFDM multipath channels channel shortening
Ping Zhang Jiayin Qin
Department of Electronics & Communications Engineering Sun Yat-Sen University Guangzhou, P. R. China
国际会议
北京
英文
1-4
2010-06-25（万方平台首次上网日期，不代表论文的发表时间）