Patent ID: 7957452
Filing Date: 2011-06-07
Classification: H04B,H04J

Abstract:
1. A direct sequence spread spectrum (DSSS) transceiver comprising a DSSS transmitter and a DSSS receiver, wherein the DSSS transmitter comprises: an integral code mapping unit mapping source bit data in one of 2 a radio frequency (RF) transmitting unit transmitting the integral code words mapped by the integral code mapping unit over an RF carrier wave, and the DSSS receiver comprises: an RF receiving unit removing an RF carrier wave from an RF signal from the RF transmitting unit and converting an analog signal obtained by removing the RF carrier wave from the RF signal into a digital signal; a differential circuit unit differentiating and converting the digital signal from the RF receiving unit into bi-orthogonal code words; and a symbol detection unit detecting a symbol corresponding to a maximum value of correlation values between bi-orthogonal code word from the differential circuit unit and a plurality of predetermined reference code words.