Effect of signal quantization on the performance of LMMSE receiver in WLL channels

Author

Hooli, Kari ; Oppermann, Ian

Author_Institution

Centre for Wireless Commun., Oulu Univ., Finland

Volume

2

fYear

1998

fDate

2-4 Sep 1998

Firstpage

536

Abstract

This paper examines the effect of signal quantization on the performance of an adaptive LMMSE DS-CDMA receiver in the up-link of low mobility, high data rate wireless local loop (WLL) application. The baseband receiver considered is the LMS-LMMSE receiver which includes the finite quantization of the incoming signal. Both AWGN channel and multipath channel models based on actual channel measurements are used in the computer simulations. Also the effect of imperfect power control on the signal quantization is considered. It is shown that the degradation in the performance of the receiver is relatively insignificant with practical levels of quantization

Keywords

AWGN channels; code division multiple access; land mobile radio; least mean squares methods; multipath channels; multiuser channels; power control; quantisation (signal); radio access networks; radio links; radio receivers; spread spectrum communication; telecommunication control; AWGN channel model; BER; LMMSE receiver; WLL channels; adaptive LMMSE DS-CDMA receiver; baseband receiver; channel measurements; computer simulations; high data rate; imperfect power control; low mobility wireless local loop; multipath channel model; signal quantization; up-link; AWGN channels; Application software; Baseband; Degradation; Digital systems; Fading; Multiaccess communication; Power control; Quantization; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on

Conference_Location

Sun City

Print_ISBN

0-7803-4281-X

Type

conf

DOI

10.1109/ISSSTA.1998.723842

Filename

723842