Blind signal separation using signal path selection
First Claim
1. A communications device for separating source signals provided by M signal sources, the communications device comprising:
- an antenna array comprising N elements for forming at least N antenna beams for receiving at least N different summations of the M source signals, with N and M being greater than 2;
a controller connected to said antenna array for selectively forming the at least N antenna beams;
a receiver assembly connected to said antenna array for receiving the at least N different summations of the M source signals; and
a blind signal separation processor connected to said receiver assembly for forming a mixing matrix comprising up to the at least N different summations of the M source signals, said blind signal separation processor also determining if the different summations of the M source signals are correlated or '"'"'statistically independent, and if not, then cooperating with said controller for forming different beams for receiving new different summations of the M source signals to replace the different summations of the M source signals that are not correlated or statistically independent in the mixing matrix, and separating desired source signals from the mixing matrix.
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Accused Products
Abstract
A communications device for separating source signals provided by M signal sources includes an antenna array comprising N elements for forming at least N antenna beams for receiving at least N different summations of the M source signals, with N and M being greater than 2. A controller is connected to the antenna array for selectively forming the at least N antenna beams. A blind signal separation processor forms a mixing matrix comprising up to the at least N different summations of the M source signals. The blind signal separation processor also determines if the different summations of the M source signals are correlated or statistically independent, and if not, then cooperates with the controller for forming different beams for receiving new different summations of the M source signals to replace the different summations of the M source signals that are not correlated or statistically independent in the mixing matrix. The desired source signals are separated from the mixing matrix by the blind signal separation processor.
12 Citations
29 Claims
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1. A communications device for separating source signals provided by M signal sources, the communications device comprising:
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an antenna array comprising N elements for forming at least N antenna beams for receiving at least N different summations of the M source signals, with N and M being greater than 2;
a controller connected to said antenna array for selectively forming the at least N antenna beams;
a receiver assembly connected to said antenna array for receiving the at least N different summations of the M source signals; and
a blind signal separation processor connected to said receiver assembly for forming a mixing matrix comprising up to the at least N different summations of the M source signals, said blind signal separation processor also determining if the different summations of the M source signals are correlated or '"'"'statistically independent, and if not, then cooperating with said controller for forming different beams for receiving new different summations of the M source signals to replace the different summations of the M source signals that are not correlated or statistically independent in the mixing matrix, and separating desired source signals from the mixing matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for operating a communications device for separating source signals provided by M signal sources, the communications device comprising an antenna array, a controller connected to the antenna array, a receiver assembly connected to the antenna array, and a blind signal separation processor connected to the receiver assembly, the method comprising:
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receiving at the antenna array at least N different summations of the M source signals, the antenna array comprising N elements for forming at least N antenna beams, with N and M being greater than 2;
selectively forming the at least N antenna beams in response to the controller;
providing the at least N different summations of the M source signals to the receiver assembly; and
processing by the blind signal separation processor the at least N different summations of the M source signals received by the receiver assembly, the processing comprising determining if the different summations of the M source signals are correlated or statistically independent, and if not, then cooperating with said controller for forming different beams for receiving new different summations of the M source signals to replace the different summations of the M source signals that are not correlated or statistically independent in the mixing matrix, and separating desired source signals from the mixing matrix. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification