Adaptive channel equalization for TDMA digital cellular communications using antenna arrays

Author

Naguib, Ayman F. ; Khalaj, Babak ; Paulraj, Arogyaswami ; Kailath, Thomas

Author_Institution

Inf. Syst. Lab., Stanford Univ., CA, USA

fYear

1994

fDate

19-22 Apr 1994

Abstract

Mobile radio channels can be generally characterized as a fading multipath channel with multipath spread delay that ranges from a few microseconds (μs) up to as much as 15 μs. Such large delays result in intersymbol interference which raises the need for equalization. A semi-blind maximum likelihood sequence estimation (MLSE) with an antenna array is studied as an adaptive equalization method for time division multiple access (TDMA) digital cellular systems. The MLSE is implemented using a Viterbi algorithm (VA). An antenna array is used to utilize both temporal and spatial structure in the received signal to provide the VA with the estimate of the channel impulse response necessary for it to perform MLSE

Keywords

adaptive equalisers; antenna arrays; array signal processing; cellular radio; digital radio; estimation theory; fading; intersymbol interference; land mobile radio; maximum likelihood estimation; multipath channels; time division multiple access; MLSE; TDMA; Viterbi algorithm; adaptive channel equalization; antenna arrays; channel impulse response; digital cellular communications; fading multipath channel; intersymbol interference; maximum likelihood sequence estimation; mobile radio channels; multipath spread delay; received signal; spatial structure; temporal structure; time division multiple access; Adaptive arrays; Adaptive equalizers; Antenna arrays; Delay; Fading; Intersymbol interference; Land mobile radio; Maximum likelihood estimation; Multipath channels; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on

Conference_Location

Adelaide, SA

ISSN

1520-6149

Print_ISBN

0-7803-1775-0

Type

conf

DOI

10.1109/ICASSP.1994.389866

Filename

389866