Communication device

摘要

A direct sequence spread spectrum (DSSS) receiver ( 100 ) consistent with certain embodiments has a frequency generator ( 112 ) that generates a local oscillator signal without use of a piezoelectric crystal. A frequency converter ( 108 ) receives the local oscillator signal and mixes the local oscillator signal with a received DSSS signal to produce a down-converted signal. The received DSSS signal is encoded using a first set of DSSS code. A differential chip detector ( 116 ) receives the down-converted signal and converts the down-converted signal to a differentially detected signal. A correlator ( 120 ) receives the differentially detected signal and correlates the detected signal with a set of DSSS codes that are time-shifted from the first set of DSSS codes. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.