Signal separation based on a hybrid separation matrix and antenna arrays
First Claim
1. A communications device for separating M source signals provided by M signal sources, the communications device comprising:
- K antenna arrays for receiving M different summations of the M source signals, where K<
M, each antenna array receiving at least one different summation of the M source signals, with at least one of the antenna arrays receiving at least two different summations of the M source signals;
a receiver connected to said K antenna arrays for receiving the M different summations of the M source signals; and
a signal separation processor connected to said receiver and forming a hybrid separation matrix as a function of the followingtime differences between receipt of the M different summations of the M source signals by said K antenna arrays,a spatial fourth order cumulant matrix pencil based upon the time differences,a spatial correlation matrix based upon the spatial fourth order cumulant matrix, andsteering vectors of the M different summations of the M source signals based upon the spatial correlation matrix; and
said signal separation processor multiplying the hybrid separation matrix by a time series matrix representation of the M different summations of the M source signals for separating the M source signals.
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Abstract
A method for operating a communications device for separating M source signals provided by M signal sources includes receiving at K antenna arrays M different summations of the M source signals, where K<M. Each antenna array receives at least one different summation of the M source signals, with at least one of the antenna arrays receiving at least two different summations of the M source signals. The M different summations are used for forming a hybrid separation matrix as a function of the following: time differences between receipt of the M different summations of the M source signals by the K antenna arrays; a spatial fourth order cumulant matrix pencil based upon the time differences; a spatial correlation matrix based upon the spatial fourth order cumulant matrix; and steering vectors of the M different summations of the M source signals based upon the spatial correlation matrix. A signal separation processor multiplies the hybrid separation matrix by a time series matrix representation of the M different summations of the M source signals for separating the M source signals.
11 Citations
20 Claims
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1. A communications device for separating M source signals provided by M signal sources, the communications device comprising:
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K antenna arrays for receiving M different summations of the M source signals, where K<
M, each antenna array receiving at least one different summation of the M source signals, with at least one of the antenna arrays receiving at least two different summations of the M source signals;a receiver connected to said K antenna arrays for receiving the M different summations of the M source signals; and a signal separation processor connected to said receiver and forming a hybrid separation matrix as a function of the following time differences between receipt of the M different summations of the M source signals by said K antenna arrays, a spatial fourth order cumulant matrix pencil based upon the time differences, a spatial correlation matrix based upon the spatial fourth order cumulant matrix, and steering vectors of the M different summations of the M source signals based upon the spatial correlation matrix; and said signal separation processor multiplying the hybrid separation matrix by a time series matrix representation of the M different summations of the M source signals for separating the M source signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for operating a communications device for separating M source signals provided by M signal sources, the communications device comprising K antenna arrays, a receiver connected to the K antenna arrays, and a signal separation processor connected to the receiver, the method comprising:
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receiving at the K antenna arrays M different summations of the M source signals, where K<
M, each antenna array receiving at least one different summation of the M source signals, with at least one of the antenna arrays receiving at least two different summations of the M source signals;providing the M different summations of the M source signals to the receiver; and processing by the signal separation processor the M different summations provided to the receiver for forming a hybrid separation matrix as a function of the following time differences between receipt of the M different summations of the M source signals by the K antenna arrays, a spatial fourth order cumulant matrix pencil based upon the time differences, a spatial correlation matrix based upon the spatial fourth order cumulant matrix, and steering vectors of the M different summations of the M source signals based upon the spatial correlation matrix; and the signal separation processor multiplying the hybrid separation matrix by a time series matrix representation of the M different summations of the M source signals for separating the M source signals. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification