Designing equalizers based on explicit channel models of DS-CDMA systems

Author

Tidestav, Claes

Author_Institution

Signal Process. Group, Uppsala Univ., Sweden

Volume

1

fYear

1996

fDate

29 Sep-2 Oct 1996

Firstpage

131

Abstract

The entire process of transmission and reception in a DS-CDMA system, including the spreading, is described as a tapped delay line model with multiple inputs and a single output. This model is then used to design a fractionally spaced decision feedback equalizer with a single input and multiple outputs. In the proposed approach, long codes can be used and channel estimation can be performed in an efficient way. The suggested detector is near-far resistant. Simulations demonstrate the utility of the proposed approach in a heavily loaded system with and without power control where multipath is present

Keywords

decision feedback equalisers; delay lines; multipath channels; parameter estimation; power control; pseudonoise codes; signal detection; spread spectrum communication; telecommunication control; DS-CDMA systems; channel estimation; channel models; fractionally spaced decision feedback equalizer; heavily loaded system; long codes; multipath; multiple inputs; multiple outputs; near-far resistant detector; power control; reception; simulations; single input; single output; spreading; tapped delay line model; transmission; Channel estimation; Decision feedback equalizers; Decorrelation; Delay estimation; Delay lines; Detectors; Finite impulse response filter; Multiaccess communication; Nonlinear filters; Power control; Propagation delay;

fLanguage

English

Publisher

ieee

Conference_Titel

Universal Personal Communications, 1996. Record., 1996 5th IEEE International Conference on

Conference_Location

Cambridge, MA

Print_ISBN

0-7803-3300-4

Type

conf

DOI

10.1109/ICUPC.1996.557789

Filename

557789