Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-06-06
2006-06-06
Bocure, Tesfaldet (Department: 2631)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S148000, C370S335000
Reexamination Certificate
active
07058115
ABSTRACT:
An equalization method and apparatus for a downlink channel in a telecommunication system transmitting MC-CDMA symbols on a plurality of carrier frequencies, in which a plurality of links are established between a transmitter and a plurality of receivers in order to transmit a plurality of coded signals, each link using a distinct access code amongst N possible codes, there being P links for P users where P is less than N. The equalization including the formation and use of a matrix of reduced size based upon the number of links being P by eliminating matrix elements relating to the unused codes and effecting an estimation of the said transmitted symbols according to a mean square error minimization criterion.
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Bocure Tesfaldet
Ejaz Naheed
Mitsubishi Denki & Kabushiki Kaisha
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