Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2011-07-12
2011-07-12
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S316000, C375S340000, C375S341000, C375S347000
Reexamination Certificate
active
07978798
ABSTRACT:
Provided are a spatial multiplexing apparatus and method in a Multiple Input Multiple Output (MIMO) system. The spatial multiplexing detection method includes estimating channels of a received signal, and sorting the estimated channels in descending order according to a scheme; generating a subsystem of a minimum unit by nulling an arbitrary channel among the sorted channels; performing a modified maximum likelihood (MML) in the subsystem of the minimum unit to calculate a number of transmission signal vectors; and calculating Euclidean distances of the number of the transmission signal vectors, and selecting a transmission signal vector having a minimum Euclidean distance. Accordingly, the receiver exhibits a performance level similar to a Maximum Likelihood (ML) and can obtain the complexity similar to successive interference cancellation (SIC).
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Choi Soong-Yoon
Hwang Keun-Chul
Kim Jae-Kwon
You Cheol-Woo
Fan Chieh M
Lee Siu M
Samsung Electronics Co,. Ltd
The Farrell Law Firm P.C.
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