CDMA with multiuser detection vs. coding

Author

Correia, Américo ; Cercas, Francisco ; Rodrigues, Antonio

Author_Institution

Dept. de Engenharia Electrotecnica e de Comput., Inst. Superior Tecnico, Lisbon, Portugal

Volume

1

fYear

1998

fDate

8-11 Sep 1998

Firstpage

410

Abstract

This work deals with the asynchronous DS-CDMA reverse link with multiuser detection (MUD) receivers (two stages of parallel interference cancellation) the channel is multipath Rayleigh faded. The trade-off analysis between MUD and channel coding is the main topic. A comparison is made between the maximum throughputs (in bits/s/Hz) achievable using multiuser detection and single user detection, for both single cell and cellular systems. The effect of imperfect power control is also investigated. As in a DS-CDMA system a fixed bandwidth expansion can be allocated to either error correction coding or modulation signal spreading this trade-off is also analysed in conjunction with MUD vs. coding. We suppose that BPSK modulation with coherent demodulation is employed

Keywords

Rayleigh channels; cellular radio; channel coding; code division multiple access; demodulation; error correction codes; interference suppression; multipath channels; multiuser channels; phase shift keying; power control; radio links; radiofrequency interference; signal detection; spread spectrum communication; telecommunication control; BPSK; asynchronous DS-CDMA reverse link; cellular systems; channel coding; coherent demodulation; error correction coding; fixed bandwidth expansion; imperfect power control; maximum throughput; modulation signal spreading; multipath Rayleigh fading channel; multiuser detection receivers; parallel interference cancellation; single cell system; single user detection; Bandwidth; Channel coding; Error correction codes; Interference cancellation; Modulation coding; Multiaccess communication; Multiuser detection; Power control; Signal analysis; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on

Conference_Location

Boston, MA

Print_ISBN

0-7803-4872-9

Type

conf

DOI

10.1109/PIMRC.1998.733593

Filename

733593