Patent ID: 7391828

Claim:
A symbol boundary detection device for use in a receiver of a multi-channel communication system, wherein the receiver receives a packet having a plurality of signals which are divided into a first preamble, a second preamble and at least one symbol, the symbol boundary detection device comprising: a first preamble matched filter for outputting a first estimated signal corresponding to a CIR (channel impulse response) of the multi-channel communication system according to the first preamble; a boundary detector, which is coupled to the first preamble matched filter, for determining a symbol boundary reference point according to the first estimated signal; a detection unit for outputting a detection signal when detecting the receiving of the second preamble; and a timing controller, which is coupled to the boundary detector and the detection unit, for determining a start point of the at least one symbol according to the symbol boundary reference point and the detection signal.