Channel Shortening Equalizer with Robust TIR Quality Controlled for OFDM Systems
نویسندگان
چکیده
In orthogonal frequency division multiplexing (OFDM) systems, a time-domain equalizer (TEQ) is used to reduce the intersymbol interference (ISI) by shortening the channel impulse response when the channel length is larger than cyclic prefix (CP) length. However, conventional channel shortening methods may have frequency notch problem which will causes significant system performance degradation. In this paper, we propose a relaxed least-squares method to effectively mitigate the frequency notch effect. The simulation results shows that the proposed has the best system performance in the OFDM systems as compared with other channel shortening algorithms.
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