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

Suman Das; Chaitali Sengupta; Joseph R. Cavallaro

doi:10.1117/12.325707

2 October 1998 Hardware design issues for a mobile unit for next-generation CDMA systems

Suman Das, Chaitali Sengupta, Joseph R. Cavallaro

Proceedings Volume 3461, Advanced Signal Processing Algorithms, Architectures, and Implementations VIII; (1998) https://doi.org/10.1117/12.325707
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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 cost. In this paper, we focus on the fixed-point implementation of 'blind' algorithms, wordlength requirements, and the operation count required for implementation of such 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 worklength but similar computational complexity.

Citation Download Citation

Suman Das, Chaitali Sengupta, and Joseph R. Cavallaro "Hardware design issues for a mobile unit for next-generation CDMA systems", Proc. SPIE 3461, Advanced Signal Processing Algorithms, Architectures, and Implementations VIII, (2 October 1998); https://doi.org/10.1117/12.325707

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