Patent ID: 7529177

Claim:
A method for transmitting an information stream over a wireless communication medium to one or more receivers, the method comprising: (a) applying both orthogonal-frequency division multiplexed (OFDM) modulation and splitting to the information stream to generate a first copy and M−1 other copies of an OFDM signal, where M is the total number of antennas with an integer value greater than 1; (b) applying M−1 delays and M−1 variable-frequency phase offsets to the M−1 other copies of the OFDM signal to generate M−1 delayed, phase-offset copies, wherein: (i) the M−1 delays are relative to the first copy; (ii) the M−1 delays are longer than spatial delays introduced as a result of separation distances between the antennas; and (iii) the M−1 delays are shorter than a guard interval of the OFDM signal; and (c) transmitting the first copy and the M−1 delayed, phase-offset copies via M respective antennas over the wireless communication medium.