Blind signal separation using signal path selection

Details Blind signal separation using signal path selection Blind signal separation using signal path selection

G - Physics

01

S

G01S 3/16 (2006.01)

Patent

CA 2581218

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.

L'invention concerne un dispositif de communications destiné à séparer des signaux sources fournis par M sources de signaux, qui comporte un réseau d'antennes comprenant N éléments pour former au moins N faisceaux d'antennes permettant de recevoir au moins N sommations différentes des M signaux sources, N et M étant supérieurs à 2. Une commande est reliée au réseau d'antennes pour former de manière sélective les N faisceaux d'antennes. Un processeur de séparation aveugle des sources forme une matrice de mélange comprenant jusqu'à au moins N sommations différentes des M signaux sources. Ledit processeur détermine également si les différentes sommations des M signaux sources sont corrélées ou si elles sont statistiquement indépendantes et, si elles ne le sont pas, il coopère avec la commande pour former différents faisceaux pour recevoir de nouvelles sommations différentes des M signaux sources qui ne pas corrélées ou qui sont statistiquement indépendants dans la matrice de mélange. Les signaux sources recherchés sont séparés de la matrice de mélange par le processeur de séparation aveugle des sources.

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