Symbol-by-symbol MAP detection of differential frequency hopping signals over Rayleigh flat fading channels

Author

Zhang, Rui ; Liu, Kaihua

Author_Institution

Sch. of Electr. Inf., Tianjin Univ.

fYear

2005

fDate

1-4 May 2005

Firstpage

1602

Lastpage

1605

Abstract

In this paper, a symbol-by-symbol MAP (SBS-MAP) detection of differential frequency hopping (DFH) signals over Rayleigh flat fading channels is proposed. Because the frequency sequence of DFH signals can be interpreted as a Markov chain, the algorithm is based on a trellis diagram used to describe the state transition of a Markov source. The SBS-MAP can produce the a posteriori probability for each transmitted symbol by utilizing the a priori information and the correlation information between successive transmitted symbols. Simulation results demonstrate that the proposed detection scheme outperforms others such as fast Fourier transform (FFT) detection and maximum likelihood sequence estimation (MLSE) detection in terms of error rate performance

Keywords

Markov processes; Rayleigh channels; fast Fourier transforms; frequency hop communication; maximum likelihood sequence estimation; FFT; MLSE detection; Markov chain; Rayleigh flat fading channels; a posteriori probability; differential frequency hopping signals; error rate performance; fast Fourier transform; frequency sequence; maximum likelihood sequence estimation; symbol-by-symbol MAP detection; trellis diagram; Baseband; Detectors; Fading; Fast Fourier transforms; Frequency shift keying; Matched filters; Maximum likelihood detection; Maximum likelihood estimation; Random variables; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2005. Canadian Conference on

Conference_Location

Saskatoon, Sask.

ISSN

0840-7789

Print_ISBN

0-7803-8885-2

Type

conf

DOI

10.1109/CCECE.2005.1557289

Filename

1557289