Patent ID: 6751273
Filing Date: 2004-06-15
Classification: H04B,H04L

Abstract:
An apparatus for compensating a channel distortion in a Bluetooth system to process a received signal having access codes, comprising:means for multiplying the received signal by a previously obtained channel distortion compensation signal to thereby provide a multiplied signal; means for demodulating access codes of the multiplied signal to thereby output demodulated received access codes as a demodulated signal; means for detecting correlation values between the demodulated received access codes and the access codes of the received signal previously stored therein to detect a start point of the received signal, thereby providing detected access codes having corresponding correlation values greater than a predetermined threshold and providing an enable signal if there are one or more correlation values greater than the predetermined threshold; and means, in response to the enable signal, for performing a channel distortion compensation based on the detected access codes and a reference signal obtained by re-modulating the access codes of the received signal to thereby provide a channel distortion compensation signal.