Patent ID: 8331420

Claim:
A method for wirelessly communicating signals across a frequency range that includes one or more sets of consecutive null subcarriers and a set of in-band subcarriers that is adjacent to the one or more sets of consecutive null subcarriers, the method comprising the steps of: generating a plurality of wireless signal for transmission, wherein each of the plurality of wireless signals includes a plurality of pilot signals, and the pilot signals within each of the plurality of wireless signals are represented in a plurality of in-band subcarriers that are unevenly spaced across the in-band subcarriers, and pilot signals of each of the plurality of wireless signals are positioned at subcarriers that are orthogonal in frequency with subcarriers at which pilot signals of all other ones of the plurality of wireless signals are positioned; and simultaneously radiating each of the wireless signals over a wireless communication channel using a different one of a plurality of antennas.