A Semi-Blind Adaptive GSM Beamformer Using Re-Encoded Data

Author

Yeon, Myung-Hoon ; Shynk, John J. ; Gooch, Richard P.

Author_Institution

Univ. of California, Santa Barbara

fYear

2007

fDate

14-16 March 2007

Firstpage

870

Lastpage

873

Abstract

An adaptive beamforming algorithm for the global system for mobile communications (GSM) is presented where the weights are updated using re-encoded data and a semi-blind technique. The receiver consists of several stages operating on the synchronization channel (SCH) in an iterative manner to improve the reliability of the cochannel signal decisions. An extension of the constant modulus algorithm (CMA) with a least-squares (LS) formulation is used to implement the semi-blind technique. Iterative semi-blind processing is introduced to further refine the beamformer weights. The performance of the enhanced GSM receiver is evaluated using real and simulated data.

Keywords

array signal processing; cellular radio; encoding; iterative methods; radio receivers; synchronisation; Global System for Mobile communications; adaptive beamforming algorithm; cochannel signal decisions; constant modulus algorithm; iterative semi-blind processing; least-squares formulation; re-encoded data; receiver; semi-blind adaptive GSM beamformer; synchronization channel; Approximation algorithms; Array signal processing; Filters; GSM; Interchannel interference; Intersymbol interference; Iterative algorithms; Receiving antennas; Signal processing; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Sciences and Systems, 2007. CISS '07. 41st Annual Conference on

Conference_Location

Baltimore, MD

Print_ISBN

1-4244-1063-3

Electronic_ISBN

1-4244-1037-1

Type

conf

DOI

10.1109/CISS.2007.4298432

Filename

4298432