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 alsodetermining if the different summations of the M source signals are correlated or statistically independent, and if not, thencooperating with said controller for forming different beans 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, andseparating 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.
5 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 beans 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