Patent Number: 7,356,074

Title: Estimation of multipath channel with sub-chip resolution

Abstract: The present invention provides a method and apparatus for estimating a multipath channel with sub-chip resolution. In general, secondary signals are characterized based on correlating a received signal including multipath signals, which include a main and the secondary signals, with a pseudo-random noise code. An inverse filter operates to increase a temporal resolution of results of the correlation of the received signal and the pseudo-random noise code, thereby allowing secondary multipath signals occurring within the same chip interval as another multipath signal to be detected and estimated correctly.

Inventors: Shan; Peijun (Jamestown, NC)

Assignee: RF Micro Devices, Inc.

International Classification: H04B 1/69 (20060101)

Expiration Date: 2020-04-08 0:00:00