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Bit Error Rate Minimizing Channel Shortening Equalizers for Multicarrier Systems

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4 Author(s)
Martin, R.K. ; Dept. of ECE, Air Force Inst. of Technol., Wright-Patterson AFB, OH ; Vanbleu, K. ; Ysebaert, G. ; Klein, A.G.

Multicarrier systems first became widely used for digital subscriber lines (DSL). In DSL, the performance metric is the bit rate that can be provided without exceeding a given bit error rate (BER). Wireless multicarrier systems are becoming more popular, and in such systems the appropriate performance metric is the BER for a given bit rate. Multicarrier systems are robust to multipath provided that the channel delay spread is shorter than the guard interval between blocks. If this condition is not met, a channel shortening equalizer can be used. Previous work on channel shortening has focussed on maximizing the bit rate for DSL. We propose and evaluate a channel shortener that attempts to directly minimize the BER of a wireless multicarrier system

Published in:

Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on

Date of Conference:

2-5 July 2006