System for parameter estimation and tracking of interfering...

Pulse or digital communications – Receivers – Interference or noise reduction

Reexamination Certificate

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C375S149000, C375S316000, C375S340000

Reexamination Certificate

active

06947505

ABSTRACT:
In a multi-user detection system in which interfering signals are purposely allowed to exist, a parameter estimation unit is provided which utilizes signal processing for determining the channel transfer function for each received signal, including the received power, phase of the oscillator, timing offset relative to the base station clock carrier frequency offset, and number of multipaths replicas and delays for each replica, with the system providing realtime uninterrupted estimates of these parameters required by the signal separation unit.

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Xiaodong Wang and H. Vincent Poor, “Iterative (Turbo) Soft Interference Cancellation and Decoding for Coded CDMA,” IEEE Transactions on Communications, vol. 47, No. 7 Jul. 1999.
S. Verdu, Multi-User Detection, Cambridge University Press, 1998.

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