Optimization of convergence of sequential decorrelator

Details Optimization of convergence of sequential decorrelator Optimization of convergence of sequential decorrelator

1985-12-31

1989-02-21

Blum, Theodore M.

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

Directive

Utilizing correlation techniques

342379, G01S 328

Patent

active

048069396

ABSTRACT:
A sequential decorrelator arrangement for an adaptive antenna array comprising a plurality of antenna elements the outputs of which feed a cascaded beamforming network having a succession of stages, each stage having one less decorrelation cell than the preceding stage and the first stage having one less cell than the number of antenna elements.
The network includes means for applying weighting to the signals applied as inputs to the cells of at least the first stage. The decorrelation cells in each stage comprise means for applying simple rotational transforms to the input data in accordance with a weighting factor common to all the cells in a stage, each stage further including means for deriving said weighting factor from the weighting factor deriving means of the previous stage and the output of one cell of the preceding stage. Each stage includes means for scaling the output of each cell in the stage by a scaling factor calculated from the weighting factor deriving means of the stage.

REFERENCES:
patent: 2575340 (1951-11-01), Goldstein
patent: 3876947 (1975-04-01), Giroudon
patent: 4005426 (1977-01-01), White
patent: 4203114 (1980-05-01), Gerst et al.
patent: 4425567 (1984-01-01), Tresselt
patent: 4498083 (1985-02-01), Gutlebes
patent: 4625211 (1986-11-01), Searle et al.
patent: 4688187 (1987-08-01), McWhirter

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