Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-04-26
2009-02-17
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S134000, C375S135000, C375S136000, C375S137000, C375S140000, C375S142000, C375S143000, C375S144000, C375S148000, C375S150000, C375S295000
Reexamination Certificate
active
07492808
ABSTRACT:
Disclosed is a method for decoding received signals on communication channels between at least one transmit antenna and plural receive antennas in a space-time coded direct sequence (DS)-CDMA communication system. The decoding method includes steps of: adjusting the step-size which is an update unit for the tap weight vector for despreading received signals; updating the tap weight vector using the step-size; and despreading the received signals using the tap weight vector. According to the decoding method, the optimal performance can be achieved because the tap weight vector and the step-size are adaptively updated according to changes of communication environment. Such superior performance is more remarkable as the number of receive antennas and transmit antennas increases.
REFERENCES:
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Lee Jae Hong
Yi Joo Hyun
Keusey, Tutunjian & & Bitetto, P.C.
Liu Shuwang
Seoul National University Industry Foundation
Timory Kabir A
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