Patent ID: 7068617
Filing Date: 2006-06-27
Classification: H04B

Abstract:
1. A CDMA decoder for decoding a CDMA encoded signal from a desired CDMA channel, comprising: a receive input for receiving a CDMA encoded signal; a code generator for generating a predetermined CDMA code for a predetermined CDMA channel that corresponds to an encoded signal encoded with a corresponding CDMA code transmitted over the predetermined CDMA channel; a multiply or accumulate device including a multiplication device for multiplying said received signal received on said receive input by said predetermined CDMA code word and operating in the analog domain, said multiply or accumulate device also including an accumulator operable to accumulate the results of the multiplication operation over a symbol period to provide an analog result; a data conversion device for determining if the analog result corresponds to a predetermined digital state and, if so, generating a digital output corresponding to said predetermined digital state; and a summation device for subtracting the output of said multiplication device from said analog result of said multiply or accumulate device prior to input to said data conversion device associated with said multiply or accumulate device.