Patent ID: 7386067
Filing Date: 2008-06-10
Classification: H04L

Abstract:
1. A system for wireless communication complying with a communication scheme defined to carry out data transmission with a predetermined pattern being added to a head of to be transmitted data, and including a semiconductor integrated circuit device, the semiconductor integrated circuit device comprising: a first conversion means for converting a receive signal, which is an analog signal including the predetermined pattern added in front of transmitted data, into a digital signal; a demodulation means for demodulating the digital signal and outputting a demodulated data; a detection means for receiving the demodulated data, recognizing the predetermined pattern added in front of the transmitted data, and generating a determination level signal , said detection means being made up of a digital circuit; and a determination means for determining the demodulated data based on the determination level signal, wherein the determination level signal instructs a threshold level of high data or low data for determining the demodulated data, so that the semiconductor integrated circuit device cancels a frequency offset from the receive signal.