MLSE for an unknown channel. II. Tracking performance

Author

Chugg, Keith M. ; Polydoros, Andreas

Author_Institution

Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA

Volume

44

Issue

8

fYear

1996

fDate

8/1/1996 12:00:00 AM

Firstpage

949

Lastpage

958

Abstract

For pt. I see ibid., vol.44, no.7, p.836, 1996. The channel-tracking mode performance of the front-end (FE) processors is determined through approximate analysis and computer simulation. A general model for the FE processing, which encompasses these representative FEs, is assumed. Previous analysis techniques are extended to include the effects of FE processing. The specific system analyzed consists of a Rayleigh-fading, diffuse multipath channel, with several data pulse shapes considered. An adaptive maximum likelihood sequence estimation (MLSE) algorithm based on the per-survivor processing (PSP) technique is analyzed and compared to an algorithm based on correct symbol feedback. The results show that significant performance degradation is suffered when suboptimal FE processing is used. Some of the issues which may complicate matters in practice are examined with an emphasis on application in packet mobile radio systems. The limitations of the results and the models used are discussed

Keywords

Rayleigh channels; adaptive estimation; adaptive signal processing; fading; land mobile radio; maximum likelihood estimation; multipath channels; packet radio networks; radio receivers; satellite computers; tracking; MLSE; MLSE algorithm; Rayleigh fading channel; adaptive maximum likelihood sequence estimation; approximate analysis; channel tracking mode performance; computer simulation; data pulse shapes; diffuse multipath channel; front-end processors; models; packet mobile radio systems; per-survivor processing; performance degradation; recursive receivers; suboptimal FE processing; symbol feedback; Algorithm design and analysis; Computer simulation; Feedback; Iron; Maximum likelihood estimation; Multipath channels; Performance analysis; Pulse shaping methods; Rayleigh channels; Shape;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.535435

Filename

535435