Performance of BFSK FHMA systems with RTT side information over fading channels

Author

Su, Ing-Jiunn ; Wu, Jingshown

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

47

Issue

12

fYear

1999

fDate

12/1/1999 12:00:00 AM

Firstpage

1785

Lastpage

1787

Abstract

The performance of frequency-hopping multiple-access systems with side information and binary frequency-shift keying signaling is evaluated. The side information is generated by Viterbi´s ratio threshold test (RTT). Both synchronous and asynchronous hopping systems over fading channels are examined. The system with RTT side information performs significantly better than that with perfect side information or hard decision. Compared with hard decision, the RTT side information provides more than 20% improvement in capacity for E_b/N₀=10 dB over Rayleigh channels. Also, we find that the optimum threshold in the RTT scheme should be dynamically adjusted with the number of simultaneous users in the system

Keywords

Rayleigh channels; Viterbi detection; channel capacity; frequency hop communication; frequency shift keying; multi-access systems; telecommunication signalling; BFSK FHMA systems; RTT detection scheme; RTT side information; Rayleigh channels; Viterbi ratio threshold test; asynchronous hopping systems; binary frequency-shift keying signaling; channel capacity; fading channels; frequency-hopping multiple-access systems; hard decision; optimum threshold; perfect side information; performance evaluation; synchronous hopping systems; AWGN; Envelope detectors; Fading; Frequency shift keying; Interference; Random variables; Rayleigh channels; Rician channels; Signal analysis; Testing;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.809696

Filename

809696