Pulse or digital communications – Receivers – Interference or noise reduction
Patent
1997-04-22
1999-03-23
Le, Amanda T.
Pulse or digital communications
Receivers
Interference or noise reduction
375349, 455138, 4552761, 4552781, H04B 708, H04L 106
Patent
active
058870385
ABSTRACT:
An apparatus for performance improvement of a digital wireless receiver comprises a processing circuit for processing a plurality of received signals and providing a processed signal, wherein each of the plurality of received signals is weighted and combined to provide the processed signal; and a generation circuit for computing a composite reference signal for use in weight generation. The composite reference signal is computed as a weighted average of a coherent reference signal value and a constant-modulus reference signal value.
REFERENCES:
patent: 4797950 (1989-01-01), Rilling
patent: 5481570 (1996-01-01), Winters
patent: 5608409 (1997-03-01), Rilling
Winters, Jack H. et al. "The Impact of Antenna Diversity on the Capacity of Wireless Communication Systems", IEEE Transactions on Communications vol. 42, No. 2/3/4, Feb./Mar./Apr. 1994.
Winters, Jack H., "Signal Acquisition and Tracking with Adaptive Arrays in the Digital Mobile Radio System IS-54 with Flat Fading", IEEE Transactions on Vehicular Technology, vol. 42, No. 4, Nov. 1993.
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