Complex scaled tangent rotations (CSTAR) for fast space-time adaptive equalization of wireless TDMA

Author

Martone, Massimiliano

Author_Institution

Telecommun. Group, Watkins-Johnson Co., Gaithersburg, MD, USA

Volume

46

Issue

12

fYear

1998

fDate

12/1/1998 12:00:00 AM

Firstpage

1587

Lastpage

1591

Abstract

A new update algorithm for space-time equalization of wireless time-division multiple access signals is presented. The method is based on a modified QR factorization that reduces the computational complexity of the traditional QR-decomposition based recursive least squares method and maintains numerical stability. Square roots operations are avoided due to the use of an approximately orthogonal transformation, defined complex scaled tangent rotation

Keywords

adaptive equalisers; cellular radio; computational complexity; least squares approximations; numerical stability; recursive estimation; time division multiple access; QR-decomposition based recursive least squares; RLS; approximately orthogonal transformation; cellular communications; complex scaled tangent rotations; computational complexity; fast space-time adaptive equalization; modified QR factorization; numerical stability; time-division multiple access; update algorithm; wireless TDMA signals; Adaptive equalizers; Antenna feeds; Computational complexity; Fading; Feedback; Filters; Least squares approximation; Least squares methods; Receiving antennas; Time division multiple access;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.737396

Filename

737396