Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-11-03
2010-10-26
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S150000, C370S342000
Reexamination Certificate
active
07822103
ABSTRACT:
A code division multiple access base station receives K data signals over a shared spectrum. The base station receives and samples a combined signal having the K transmitted data signals. A combined channel response matrix is produced. A block column of a cross correlation matrix is determined using the combined channel response matrix. Each block entry of the block column is a K by K matrix. A fourier transform of a complex conjugate transpose of the combined channel response matrix multiplied to the combined signal samples is taken. An inverse of a fourier transform of each block entry is multiplied to a result of the fourier transform to produce a fourier transform of the data vector. An inverse fourier transform of the data vector fourier transform is taken to produce data of the K signals.
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De Parthapratim
Pan Kyle Jung-Lin
Zeira Ariela
Bocure Tesfaldet
InterDigital Technology Corporation
Volpe and Koenig P.C.
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