Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2011-03-01
2011-03-01
Corrielus, Jean B (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S347000
Reexamination Certificate
active
07899138
ABSTRACT:
The present invention relates to a method of detecting a space-time code in a mobile communication system. When detecting a space-time code B for a plurality of transmitting antennas, an ML (maximum likelihood) metric, which is generally calculated by using a specific structure of a matrix B, is defined as a new ML metric by reducing a variable of the ML metric. Two dependent sphere decoding processes are performed and an intersection of the decoding results is calculated, and a signal is detected from the ML metric. Therefore, since detection of the space-time code B for the plurality of transmitting antennas is performed by using the newly defined ML metric, an amount of matrix calculated can be reduced, and a calculation amount can be reduced by performing the two dependent sphere decoding processes. Further, since a detection order of symbols is changed according to a channel situation, it is possible to improve the performance of the system.
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Ahn Jee-Hwan
Bahng Seung-Jae
Bang Young-Jo
Kim Dae-Ho
Kim II Min
Corrielus Jean B
Jefferson IP Law, LLP
Samsung Electronics Co,. Ltd
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