Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Patent
1998-03-25
2000-07-04
Bost, Dwayne D.
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
4552263, 370335, H04B 1500
Patent
active
06085104&
ABSTRACT:
A wideband receiver, including a time-varying finite impulse response (FIR) filter, has been provided to combine multipath communications of data in response to pilot channel timing information. The time-varying FIR processes the multipath communications through independent signal paths. Each signal path includes a variable delay circuit and a variable gain circuit. The delay of each separate signal path is adjusted and made equal in response to the pilot channel timing information. Likewise, the gain of each signal path is adjusted in response to pilot channel gain information to maximize the signal to noise ratio of the combined signal paths. The separate signal paths are then summed in a combiner circuit. The time-varying FIR permits the data communication to be summed either before, or after demodulation. A method of combining multipath communications using a time-varying FIR is also provided.
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Kandala Srinivas
Kowalski John M.
Somayazulu V. Srinivasa
Bost Dwayne D.
Gary Erika A.
Rabdau Matthew D.
Ripma David C.
Sharp Laboratories of America Inc.
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