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Hardware design issues for a mobile unit for next generation CDMA systems

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Title: Hardware design issues for a mobile unit for next generation CDMA systems
Author: Das, Suman; Sengupta, Chaitali; Cavallaro, Joseph R.
Type: Conference Paper
Keywords: CDMA; forward link; hardware design; fixed-point
Citation: S. Das, C. Sengupta and J. R. Cavallaro,"Hardware design issues for a mobile unit for next generation CDMA systems," in Conference on Advanced Signal Processing Algorightms, Architectures, and Implementations,
Abstract: This paper addresses hardware design issues of a mobile receiver for future generation direct sequence CDMA wireless communication systems. In the design of a mobile unit, fixed-point hardware is an attractive alternative because of increased speed, reduced power consumption, and reduced hardware costs. In this paper, we focus on the fixed-point implementation of `blind' detection and channel estimation schemes that do not require knowledge of spreading codes of the other users. The error pattern of the 'blind' algorithms, wordlength requirements, and the operation count required for implementation of such algorithms are evaluated. Our results show that the blind maximum likelihood channel estimation along with the blind MMSE detection algorithm can achieve approximately five times improvement in performance over the conventional correlator based receivers. These newer algorithms require slightly higher wordlength but similar computational complexity.
Date Published: 1998-07-20

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  • ECE Publications [1030 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students