Patent ID: 7916803

Claim:
A method of transmitting signals using a plurality of transmit channels, the method comprising: allocating data to be transmitted among the plurality of transmit channels, wherein at least one of the plurality of transmit channels transports a subset of said data that is not transmitted over another of said plurality of transmit channels; and transmitting a modified preamble from each of the plurality of transmit channels, wherein the modified preamble is distinguishable at a receiver from a conventional 802.11a preamble and includes information in an out-of-band component unused in a conventional 802.11a preamble wherein the plurality of transmit channels comprise a plurality of frequency channels; and, wherein the out-of-band component comprises a frequency band at a junction of adjacent 20 MHz channels comprising a portion of each channel that is attenuated by conventional 802.11a communication devices.