Pulse or digital communications – Equalizers
Reexamination Certificate
2007-08-07
2007-08-07
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Equalizers
C375S230000, C375S231000, C375S348000, C375S260000, C375S267000, C333S018000, C708S305000, C702S124000
Reexamination Certificate
active
09849927
ABSTRACT:
Equalisation of a communication channel is achieved through use of a Wiener filter frequency response mechanism that operates to transform at least a portion of a data stream generated from a plurality of space time coded (STC) symbol streams received from a plurality of transmit antenna elements into a packet spectrum. A training sequence for a channel through which the symbol streams have been sent is also transformed to a channel impulse response spectrum in order to assess the channel impulse response for the channel. The packet spectrum is equalised with the channel impulse response spectrum to produce an equalised packet spectrum in the transform domain. This is then converted into a time domain equalised data stream for recovery of originally transmitted information.
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Barnes & Thornburg LLP
Fan Chieh M.
Nortel Networks Limited
Pathak Sudhanshu C.
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