Blind signal separation using array deflection

Details Blind signal separation using array deflection Blind signal separation using array deflection

2006-08-29

2006-08-29

Tarcza, Thomas H. (Department: 3662)

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

Directive

Utilizing correlation techniques

C342S377000

Reexamination Certificate

active

07098849

ABSTRACT:
A communications device for separating source signals provided by M signal sources includes an antenna array comprising N antenna elements for generating N initial antenna patterns for receiving N different summations of the M source signals, with N being less than M. The antenna array includes an elevation controller for selectively changing an elevation of at least one of the N initial antenna patterns for generating at least one additional antenna pattern so that at least one additional different summation of the M source signals is received thereby. A blind signal separation processor forms a mixing matrix comprising the N different summations of the M source signals, and the at least one additional different summation of the M source signals. The mixing matrix has a rank equal to N plus the number of additional different summations of the M source signals received using the additional antenna patterns. The blind signal separation processor separates desired source signals from the mixing matrix.

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R. Klukas et al., Line-of-sight angle of arrival estimation in the outdoor multipath environment, IEEE Transactions on Vehicular Technology, vol. 47(1), p. 342-351, Feb. 1998.

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