Blind adaptive equalization and interference cancellation for wireless personal communications

Author

Lo, Ben C W ; Letaief, Khaled

Author_Institution

Hong Kong Univ. of Sci. & Technol., Kowloon, Hong Kong

Volume

2

fYear

1997

fDate

1-4 Sep 1997

Firstpage

307

Abstract

A new adaptive equalization scheme which can cancel both intersymbol interference (ISI) and co-channel interference (CCI) is proposed. The proposed algorithm is blind in the sense that we do not have knowledge of the training sequences of the interfering users. In particular, it is a maximum likelihood sequence estimation (MLSE) equalizer that is implemented by the generalized Viterbi algorithm (GVA) with an RLS-based channel estimator. To demonstrate the potential of the proposed method, various simulation results over a wireless communication environment in the presence of co-channel interference are presented. In addition, a sequential algorithm is introduced to reduce the computational complexity of GVA

Keywords

Viterbi detection; adaptive equalisers; adaptive signal processing; cochannel interference; computational complexity; interference suppression; intersymbol interference; land mobile radio; least squares approximations; maximum likelihood detection; maximum likelihood estimation; personal communication networks; recursive estimation; sequences; MLSE equalizer; RLS-based channel estimator; TDMA digital cellular systems; blind adaptive equalization; blind algorithm; cochannel interference; computational complexity reduction; generalized Viterbi algorithm; interference cancellation; intersymbol interference; joint data detection; maximum likelihood sequence estimation; sequential algorithm; simulation results; wireless personal communications; Adaptive equalizers; Blind equalizers; Computational modeling; Interchannel interference; Interference cancellation; Intersymbol interference; Maximum likelihood estimation; Radiofrequency interference; Viterbi algorithm; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on

Conference_Location

Helsinki

Print_ISBN

0-7803-3871-5

Type

conf

DOI

10.1109/PIMRC.1997.630914

Filename

630914