Patent ID: 8582687

Claim:
A method for controlling a combined waveform, comprising: receiving information defining a multipath propagation tolerant orthogonal frequency multiplexed signal, having a plurality of respective orthogonal frequency multiplexed signal sub-carrier components modulated to communicate first data symbols substantially without intersymbol interference; transforming the information defining the orthogonal frequency multiplexed signal to at least two different alternate representations communicating the first data symbols, each different alternate representation having a plurality of respective orthogonal frequency multiplexed signal components, each having a plurality of respective orthogonal frequency multiplexed signal sub-carrier components modulated to communicate the first data symbols, and combining the transformed information using the at least two different alternate representations with information defining at least one additional orthogonal frequency multiplexed signal, having a plurality of respective orthogonal frequency multiplexed signal sub-carrier components modulated to communicate second data symbols, in at least two different ways to define respectively different alternate combinations which communicate both the first data symbols and the second data symbols; analyzing the respectively different alternate combinations with respect to at least one criterion; and outputting information representing a selected respective different alternate combination of the transformed information and the at least one additional orthogonal frequency multiplexed signal communicating the first data symbols and the second data symbols in a combined waveform, the selected respective different alternate combination meeting the at least one criterion based on said analyzing, wherein said outputting comprises directly converting without frequency modification the combined waveform from a digital representation to a radio frequency analog signal adapted for transmission.