Pulse or digital communications – Bandwidth reduction or expansion
Reexamination Certificate
2011-06-28
2011-06-28
Payne, David C. (Department: 2611)
Pulse or digital communications
Bandwidth reduction or expansion
C704S500000, C710S068000, C382S276000, C382S232000, C382S118000, C382S119000, C382S113000
Reexamination Certificate
active
07970048
ABSTRACT:
Space-time code, and methods for constructing space-time codes are provided. The space-time coder performs a respective linear transformation on each of P sets of K modulated symbols of a modulated symbol stream to produce P sets of T linearly transformed symbols, applies a respective phase rotation to each set of T linearly transformed symbols to produce a respective set of T phase rotated symbols, and performs a threading operation on the sets of T phase rotated symbols to produce P threaded sequences that define M output sequences. During each of T symbol periods, a respective one of the P threaded sequences includes a symbol from one of the P sets of phase rotated symbols. At least one symbol from each set of phase rotated symbols appears in each output sequence, where M>=2, 2<=P<=M, and T>=M and M>=K.
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Beaulieu Norman C.
Damen Mohamed O.
El Gamal Hesham
Gordon & Jacobson, PC
Kassa Zewdu
Payne David C.
The Ohio State University
University of Alberta
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