Patent ID: 7801227

Claim:
A method of operating a communication device to transmit composite signals, comprising: transmitting a first composite signal including a first beacon signal and a first wideband synchronization signal, said first wideband synchronization signal including a first plurality of tones said first plurality of tones including at least some null tones and at least some low power tones, said low power tones having an average per tone power less than half the per tone power of any tones of said first beacon signal; repeating said step of transmitting said first composite signal; and transmitting a second composite signal including a second beacon signal which includes at least one tone which is not used to communicate said first beacon signal and a second wideband synchronization signal, said second wideband synchronization signal including a second plurality of tones said second plurality of tones including at least some null tones and at least some low power tones, said low power tones having an average per tone power less than half the per tone power of any tones of said second beacon signal, said transmitting of said second composite signal being performed during a time period which does not overlap transmission of said first composite signal.