Patent ID: 7983324

Claim:
A method for determining a symbol boundary, comprising: receiving a first preamble symbol; determining a first boundary according to the first preamble symbol by: performing a cross correlation operation on the first preamble symbol to generate a plurality of first correlation values; respectively summing a first predetermined amount of the first correlation values of to generate a plurality of first operational values; and determining the first boundary by comparing the first operational values; generating a first confidence value according to signal quality of the first preamble symbol, the first confidence value indicating a reliability of the first boundary, wherein the step of generating the first confidence value further comprises: generating a first power value corresponding to the first boundary according to the first preamble symbol; respectively summing a second predetermined amount of the first correlation values to generate a plurality of third operational values; and generating the first confidence value according to the third operational values and the first power value; receiving a second preamble symbol; determining a second boundary according to the second preamble symbol; generating a second confidence value according to signal quality of the second preamble symbol, the second confidence value indicating a reliability of the second boundary; and determining a symbol boundary from the first and the second boundaries according to the first and the second confidence values.