Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2003-03-15
2010-10-26
Ghebretinsae, Temesghen (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
Reexamination Certificate
active
07822150
ABSTRACT:
A decoding scheme for determining the information within a coded transmission includes a spherical decoder candidate search that reduces the number of candidate symbol combinations from a much larger number of possibly transmitted combinations. In one example, the spherical decoder uses an upper triangular matrix representation of the channel matrix as part of a recursive, cumulative cost function that provides the results of the candidate search. The candidate search includes considering symbols in a hierarchy or tree structure that represents the possibly transmitted combinations. The cost function incrementally accumulates a cost of a possible combination as the search progresses through the hierarchy. As soon as a symbol is determined to not be a valid candidate, all possible combinations including that symbol are discarded without considering them, directly.
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Brink Stephan Ten
Davis Linda Mary
Garrett David
Hochwald Bertrand M.
Alcatel-Lucent USA Inc.
Carlson Gaskey & Olds P.C.
Ghebretinsae Temesghen
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