Sampled data processing

Details Sampled data processing Sampled data processing

1974-09-23

1991-09-17

Blum, Theodore M.

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

Directive

Utilizing correlation techniques

342378, G01S 316, G01S 328

Patent

active

050498908

ABSTRACT:
An improved signal processing system and technique for preprocessing auxiry data signals by sequential decorrelation, particularly for use in systems employing adaptive cancaller loops. Each of a plurality of signal channels sample the environment of a plurality of signal sources and provide inputs to a configuration of adaptive canceller loops. The loops are connected such that an adaptive loop decorrelates the signal from two signal channels to form a preprocessed signal, and each of the remaining adaptive loops are sequentially connected such that each auxiliary channel signal is decorrelated from the preprocessed signal of the previous adaptive loop until all signal channels have been utilized. In a side-lobe canceller system each of the preprocessed outputs is used to form an auxiliary sample input to a main channel canceller loop to cancel interference in the receiving system. By using the preprocessed signals as the auxiliary input, a receiving system can significantly increase interference cancellation and reduce the number of iterations required.

REFERENCES:
patent: 3202990 (1965-08-01), Howells
patent: 3727220 (1973-04-01), Brennan et al.
patent: 3763490 (1973-10-01), Hadley et al.

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