Slotted ALOHA mobile packet communication systems with multiuser detection in a base station

Author

Shinomiya, Takeshi ; Suzuki, Hiroshi

Author_Institution

Canon Inc., Tokyo, Japan

Volume

49

Issue

3

fYear

2000

fDate

5/1/2000 12:00:00 AM

Firstpage

948

Lastpage

955

Abstract

A slotted ALOHA mobile packet communication system utilizing the multiuser detection (MD) is proposed for system enhancement. MD can be easily implemented by using an adaptive interference canceler. Employment of MD enables simultaneous detection of several collision packets, which results in system enhancement increasing the throughput and shortening the average delay time. Detailed theoretical analysis and computer simulation with a two-user simultaneous detection in a single-cell environment shows: (1) the throughput increases twice as much as the conventional one and (2) the average delay time decreases by 50%

Keywords

Rayleigh channels; access protocols; adaptive signal processing; cellular radio; delays; interference suppression; multi-access systems; multiuser channels; packet radio networks; radiofrequency interference; signal detection; CSMA; Rayleigh fading channel; adaptive interference canceler; average delay time reduction; base station; collision packets detection; computer simulation; multiuser detection; single-cell environment; slotted ALOHA mobile packet communication systems; system enhancement; throughput; two-user simultaneous detection; Base stations; Communication systems; Computer simulation; Delay effects; Interference cancellation; Maximum likelihood detection; Maximum likelihood estimation; Mobile communication; Multiuser detection; Throughput;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.845111

Filename

845111