Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2011-08-23
2011-08-23
Flores, Leon (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S262000, C375S316000, C375S340000
Reexamination Certificate
active
08005170
ABSTRACT:
A method and apparatus for detecting a signal in a communication system using at least two transmit antennas are provided. The signal detection method and apparatus includes selecting a symbol corresponding to a lowest branch metric from among symbols, the number of which corresponds to a modulation scheme, determining a candidate symbol by extending a process of selecting a symbol corresponding to a lowest branch metric from among the selected symbols, to a number which is less by one than the number of the transmit antennas, setting an accumulated branch metric of the candidate symbol as a threshold, removing a symbol having an accumulated branch metric higher than the threshold, and selecting, as a last received symbol, a symbol corresponding to a path having the lowest accumulated branch metric among paths selected without being removed until a last stage.
REFERENCES:
patent: 2006/0104390 (2006-05-01), Graef et al.
patent: 2009/0213965 (2009-08-01), Maeda et al.
patent: 2006-270430 (2006-10-01), None
patent: 1997-0705248 (1997-09-01), None
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Hiroyuki Kawai et al “Adaptive Control of Surviving Symbol Replica Candidates in QRM-MLD for OFDM MIMO Multiplexing” IEEE Jun. 2006.
Hwang Sung-Soo
Jeon Ki-Hwan
Kim Hyoun-Kuk
Kim Jong-In
Kwon Young-Hoon
Flores Leon
Information and Communications University, Research and Industri
Jefferson IP Law, LLP
Samsung Electronics Co,. Ltd.
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