Patent ID: 7751309

Claim:
A method of estimating a Wide-area Identification Channel (WIC) and a Local-area Identification Channel (LIC) in a MediaFLO™ (Forward Link Only) mobile multimedia multicast system comprising a receiver, a transmitter, and a transmission channel, said method comprising: receiving a wireless data signal comprising a MediaFLO™ mobile multimedia multicast system superframe comprising WIC and LIC symbols; setting a first sparseness index value of said digital signal to zero; setting a local copy WIC and LIC number of said digital signal to one; generating a local copy of all possible values of said WIC and LIC symbols corresponding to a Wide-area Differentiator (WID) and Local-area Differentiator (LID) value from zero to fifteen; dividing the received WIC and LIC symbol values by a local copy WIC and LIC value corresponding to WIC and LIC number one; performing an Inverse Fast Fourier Transform (IFFT) of all said possible values of said WIC and LIC symbols; calculating a second sparseness index value of the IFFT of sixteen possible values of said WIC and LIC symbols; and extracting a WIC and LIC symbol from said digital signal corresponding to said second sparseness index.