A multiuser detection method for overlay CDMA systems

Author

Yan, Hongbo

Author_Institution

Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA

Volume

4

fYear

2003

fDate

11-15 May 2003

Firstpage

2470

Abstract

To provide new and/or higher rate wireless services with limited bandwidth resources, frequency overlay has been proposed to host heterogeneous traffic in common band, where one CDMA system is involved due to its noise-like nature. In the paper, we address multiuser detection problem for overlay scenarios where there exist multiple CDMA systems. We propose a linear parallel interference cancellation (PIC) structure where interference due to overlaid systems is captured and subtracted by means of its subspace. Simulation results validated our solution and show that the proposed receiver has better performance in various aspects than the conventional MMSE receiver.

Keywords

code division multiple access; interference suppression; multiuser detection; radiofrequency interference; telecommunication traffic; frequency overlay; heterogeneous traffic; linear parallel interference cancellation; multiuser detection; overlay CDMA systems; Bandwidth; Frequency; Interference cancellation; Multiaccess communication; Multimedia systems; Multiple access interference; Multiuser detection; Noise cancellation; Signal generators; Surges;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. ICC '03. IEEE International Conference on

Print_ISBN

0-7803-7802-4

Type

conf

DOI

10.1109/ICC.2003.1204391

Filename

1204391