Title :
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
fDate :
12/1/1998 12:00:00 AM
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;
Journal_Title :
Communications, IEEE Transactions on
