Low complexity adaptation for channel shortening equalizers

Mohan, A and Hari, KVS (2011) Low complexity adaptation for channel shortening equalizers. In: 2011 IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS), 7-10 Aug. 2011, Seoul, South Korea.

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Abstract

Since the days of Digital Subscriber Links(DSL), Time Domain Equalizers(TEQ's) have been used to combat time dispersive channels in Multicarrier Systems. In this paper, we propose computationally inexpensive techniques to recompute TEQ weights in the presence of changes in the channel, especially over fast fading channels. The techniques use no extra information except the perturbation itself, and provide excellent approximations to the new TEQ weights. The proposed adaptation techniques are shown to perform admirably well for small changes in channels for OFDM systems.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright of this article belongs to IEEE.
Keywords:	Channel Shortening; Low complexity; Multicarrier Systems; OFDM; Time Domain Equalisation
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	01 Apr 2013 07:15
Last Modified:	01 Apr 2013 07:15
URI:	http://eprints.iisc.ac.in/id/eprint/46136

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