Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-02-17
2011-10-25
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S347000, C455S574000
Reexamination Certificate
active
08045599
ABSTRACT:
A cellular communication system comprises a Multiple-In Multiple-Out, MIMO, transmitter (101) and receiver (103). The MIMO transmitter (101) comprises a message generator (303) for generating MIMO messages comprising selected training sequences and transceivers (305, 307, 309) transmitting the messages on a plurality of antennas (311, 313, 315). The training sequences are selected by a midamble selector (317) from a set of training sequences in response to an associated antenna on which the message is to be transmitted. The set of training sequences is associated with the cell of the MIMO transmitter and comprises disjoint subsets of training sequences for each of the plurality of antennas. The receiver (103) comprises a transmit antenna detector (419) which determines which antenna of the MIMO transmitter the message is transmitted from in response to the training sequence of the received message.
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Darwood Peter B.
Jones Alan Edward
Ponnampalam Vishakan
Hassan Sarah
Liu Shuwang
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sony Corporation
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