Delay optimized zero-forcing channel shortening algorithm for wireless communication

Yashwanth, M and Hari, KVS (2012) Delay optimized zero-forcing channel shortening algorithm for wireless communication. In: 2012 International Conference on Signal Processing and Communications (SPCOM), 22-25 July 2012, Bangalore.

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Abstract

In Orthogonal Frequency Division Multiplexing and Discrete Multitone transceivers, a guard interval called Cyclic Prefix (CP) is inserted to avoid inter-symbol interference. The length of the CP is usually greater than the impulse response of the channel resulting in a loss of useful data carriers. In order to avoid long CP, a time domain equalizer is used to shorten the channel. In this paper, we propose a method to include a delay in the zero-forcing equalizer and obtain an optimal value of the delay, based on the location of zeros of the channel. The performance of the algorithms is studied using numerical simulations.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright of this article belongs to IEEE.
Keywords:	OFDM; Minimum Phase; Non-Minimum Phase; Roots; Zero-Forcing and Delay
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	13 Dec 2013 15:15
Last Modified:	13 Dec 2013 15:15
URI:	http://eprints.iisc.ac.in/id/eprint/47928

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