Adaptive array method, device, base station and subscriber unit

Details Adaptive array method, device, base station and subscriber unit Adaptive array method, device, base station and subscriber unit

1998-01-12

1999-11-09

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Utilizing correlation techniques

342378, 342382, 342383, G01S 316, G01S 328

Patent

active

059823275

ABSTRACT:
The present invention provides a method, device, base station and subscriber unit for combining a plurality of antenna output signals to provide a combined data signal in a communication system where the antennas receive at least one user signal and where the at least one user signal contains pilot symbols and data symbols. The method includes the steps of: forming, in at least one communications receiver, a plurality of weighted antenna output signals, one for each antenna of a plurality of antennas, based on at least two covariance matrices and at least two steering vectors determined from the pilot symbols; and combining the weighted antenna output signals from the plurality of antennas to form the combined data signal.

REFERENCES:
patent: 4146889 (1979-03-01), Brennan et al.
patent: 4179696 (1979-12-01), Quesinberry et al.
patent: 5299148 (1994-03-01), Gardner et al.
patent: 5311192 (1994-05-01), Varga et al.
patent: 5371506 (1994-12-01), Yu et al.
patent: 5600326 (1997-02-01), Yu et al.
Arogyaswami J. Paulraj and Constantinos B. Papadias "Space-Time Processing for Wireless Communications" IEEE Signal Processing Magazine, Nov. 1997, pp. 49-83.
I.S. Reed, J.D. Mallett, and L.E. Brennan "Rapid Convergence Rate in Adaptive Arrays" IEEE Transactions of Aerospace and Electronic Systems, vol. AES-10, No. 6, Nov. 1974, pp. 853-863.

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