Patent ID: 7693210
Filing Date: 2010-04-06
Classification: H04B,H04L

Abstract:
1. A hybrid rake/equalizer receiver for correlating a delay spread in a spread spectrum system, comprising: a plurality of adaptive equalizers, each for filtering different regions of the delay spread that have an energy level above a threshold to respectively provide equalized-descrambled chip sequences for correlation, wherein equalizer coefficients respectively corresponding to the plurality of adaptive equalizers are updated individually; and a correlation module for correlating the equalized-descrambled chip sequences to a short spreading code to provide correlated outputs, for weighting the correlated outputs to produce weighted-correlated outputs, and for summing the weighted-correlated outputs to produce a bit estimate of an original non-spread bit stream corresponding to the delay spread; wherein the correlation module weights the correlated outputs according to how much energy is respectively present in the different regions of the delay spread such that the different regions having low energy are given a lower weight than the different regions having high energy.