Improved cochannel interference cancellation for MFSK/FH-SSMA systems

Author

Lin, Shang-Yao ; Yang, Guu-Chang ; Tseng, Shih-Chin ; Hong, Chi-Fu

Author_Institution

Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan

Volume

17

Issue

11

fYear

1999

fDate

11/1/1999 12:00:00 AM

Firstpage

1940

Lastpage

1952

Abstract

There has been much interest in the application of frequency hopping-spread spectrum multiple access (FH-SSMA) to wireless systems because of its frequency diversity and resistance to the near-far problem. In FH-SSMA systems, cochannel interference (CCI) is the dominant factor limiting the user capacity. Various techniques used to resolve the CCI problem have been extensively investigated. We propose several multiuser detection schemes based on canceling CCI to increase user capacity in a multilevel frequency shift keying (MFSK)/FH-SSMA system. The performance of systems with the proposed interference cancellers over a Rayleigh fading channel are analyzed and compared with those of the conventional and other interference cancellers. Our results show that the proposed schemes have the best performance in both nonfading and fading channels

Keywords

Rayleigh channels; channel capacity; cochannel interference; frequency hop communication; frequency shift keying; interference suppression; multi-access systems; multiuser channels; signal detection; spread spectrum communication; CCI; FH-SSMA; MFSK/FH-SSMA systems; Rayleigh fading channel; cochannel interference cancellation; frequency diversity; frequency hopping-spread spectrum multiple access; multilevel frequency shift keying; multiuser detection; near-far problem resistance; nonfading channels; system performance; user capacity; wireless systems; Fading; Frequency diversity; Frequency shift keying; Interchannel interference; Interference cancellation; Matched filters; Multiuser detection; Performance analysis; Radiofrequency interference; Spread spectrum communication;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.806823

Filename

806823