Multiplex communications – Communication over free space – Combining or distributing information via code word channels...
Reexamination Certificate
2006-09-19
2006-09-19
Shah, Chirag (Department: 2616)
Multiplex communications
Communication over free space
Combining or distributing information via code word channels...
C370S335000, C370S441000, C375S148000
Reexamination Certificate
active
07110384
ABSTRACT:
A code division multiple access base station is used in receiving a plurality of data signals over a shared spectrum. Each received data signal experiences a similar channel response. A combined signal of the received data signals is received over the shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated as a channel response matrix at the multiple of the chip rate. A padded version of a spread data vector of a size corresponding to the multiple chip rate using a column of the channel response matrix, the estimated channel response matrix, the samples and a fourier transform. The spread data vector is estimated by eliminating elements of the padded version so that the estimated spread data vector is of a size corresponding to the chip rate.
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De Parthapratim
Misra Raj Mani
Pan Jung-Lin
Zeira Ariela
InterDigital Technology Corporation
Shah Chirag
Volpe and Koenig P.C.
Wilson Robert W.
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