초록 ▼

The present invention provides a system and method for reducing the power consumed by a RAKE receiver. In exemplary embodiments of the present invention, an environment variation estimator is implemented in a CDMA mobile station. The environment variation estimator is connected to the searcher of th

The present invention provides a system and method for reducing the power consumed by a RAKE receiver. In exemplary embodiments of the present invention, an environment variation estimator is implemented in a CDMA mobile station. The environment variation estimator is connected to the searcher of the RAKE receiver and provides an estimate of the rate at which the mobile station's environment is changing. By providing an estimate of the rate of change of the mobile station's environment, the duty cycle of the searcher can be optimized, thereby reducing the overall power consumed by the receiver. By also providing the estimate to the RAKE fingers, channel tracking can be improved.

대표청구항 ▼

1. A receiver comprising:a searcher for detecting rays of a received spread spectrum signal; a plurality of demodulation elements for demodulating selected rays identified by said searcher and estimating a channel associated with the rays; a combiner for combining outputs of said plurality of demodu

1. A receiver comprising:a searcher for detecting rays of a received spread spectrum signal; a plurality of demodulation elements for demodulating selected rays identified by said searcher and estimating a channel associated with the rays; a combiner for combining outputs of said plurality of demodulation elements; and a motion detector for estimating a velocity of said receiver, wherein said receiver uses said estimated velocity to adjust operation of said searcher.