Adaptive pilot interference cancellation in CDMA systems

Details Adaptive pilot interference cancellation in CDMA systems Adaptive pilot interference cancellation in CDMA systems

2006-06-14

2009-06-16

Tse, Young T. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

07548580

ABSTRACT:
A system and method for interference reduction in a spread spectrum receiver including a rake receiver having a plurality of fingers for processing a plurality of data signals and an associated plurality of pilot signals is disclosed herein. The method includes generating a plurality of intra-finger interference cancellation signals using the plurality of pilot signals. In this regard each of the plurality of intra-finger interference cancellation signals are associated with one of the plurality of fingers. Ones of the plurality of intra-finger interference cancellation signals are weighted so as to generate a set of weighted intra-finger interference cancellation signals. The method further includes synthesizing at least one inter-finger interference cancellation signal in accordance with the set of weighted intra-finger cancellation signals. At least one inter-finger cancellation signal may then be subtracted from a corresponding one of a plurality of data signals.

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Third Generation Partnership Project: Technical Specification Group Radio Access Network; Feasibility Study on the Mitigation of the Effect of the Common Pilot Channel (CPICH) Interference; 3GPP TR 25.991; V5.1.0; Dec. 2002; 28 pgs.

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