Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Patent
1996-10-11
1999-07-27
Chin, Wellington
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
375347, 455562, H04Q 700, H04J 306
Patent
active
059302437
ABSTRACT:
A method and apparatus for estimating the parameters of a wireless communication system which includes at least one base station and at least one remote terminal, each of the base stations having m antenna elements, the parameters being one or more of: the time alignment; the frequency offset; and the weight vector for spatial processing. At any stage, some of the parameters may already be estimated. A signal of known characteristics is transmitted and received as m received signals at the antenna elements. A cost function that is related to the at least one or more parameters of the second set is determined using a copy signal determined from samples of the received signals, estimates of one or more parameters, if available, known characteristics of transmitted first signal. The estimate of the parameters to be determined is obtained by minimizing the cost function.
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Barratt Craig H.
Chiodini Alain M.
Karuppiah Kamaraj
Parish David M.
ArrayComm, Inc.
Chin Wellington
Lee Chi ho Andrew
Woodward Henry K.
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