| US 7,348,923 B2 | ||
| Signal separation based on a hybrid separation matrix and antenna arrays | ||
| Steven J. Goldberg, Downingtown, Pa. (US) | ||
| Assigned to Interdigital Technology Corporation, Wilmington, Del. (US) | ||
| Filed on Feb. 07, 2007, as Appl. No. 11/672,356. | ||
| Application 11/672356 is a continuation of application No. 11/233316, filed on Sep. 22, 2005, granted, now 7,190,308. | ||
| Claims priority of provisional application 60/639223, filed on Dec. 23, 2004. | ||
| Claims priority of provisional application 60/621113, filed on Oct. 22, 2004. | ||
| Claims priority of provisional application 60/620775, filed on Oct. 20, 2004. | ||
| Claims priority of provisional application 60/620776, filed on Oct. 20, 2004. | ||
| Claims priority of provisional application 60/620862, filed on Oct. 20, 2004. | ||
| Claims priority of provisional application 60/615338, filed on Oct. 01, 2004. | ||
| Claims priority of provisional application 60/615260, filed on Oct. 01, 2004. | ||
| Claims priority of provisional application 60/612546, filed on Sep. 23, 2004. | ||
| Claims priority of provisional application 60/612435, filed on Sep. 23, 2004. | ||
| Claims priority of provisional application 60/612433, filed on Sep. 23, 2004. | ||
| Claims priority of provisional application 60/612550, filed on Sep. 23, 2004. | ||
| Claims priority of provisional application 60/612632, filed on Sep. 23, 2004. | ||
| Claims priority of provisional application 60/612548, filed on Sep. 23, 2004. | ||
| Claims priority of provisional application 60/612471, filed on Sep. 23, 2004. | ||
| Claims priority of provisional application 60/612551, filed on Sep. 23, 2004. | ||
| Claims priority of provisional application 60/612469, filed on Sep. 23, 2004. | ||
| Claims priority of provisional application 60/612547, filed on Sep. 23, 2004. | ||
| Prior Publication US 2007/0126631 A1, Jun. 07, 2007 | ||
| Int. Cl. G01S 3/16 (2006.01) | ||
| U.S. Cl. 342—378 [342/377; 702/190] | 20 Claims |
| 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 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.
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