Patent ID: 6920314

Claim:
A method of signal transmission comprising the steps of: splitting a signal s 1 into signals s 1 (a) and s 1 (b), wherein signal s 1 comprises a first STS/OTD signal belonging to an STS/OTD pair; splitting a signal s 2 into signals s 2 (a) and s 2 (b), wherein signal s 2 comprises a second STS/OTD signal belonging to the STS/OTD pair; phase sweeping the signal s 1 (b) using a first phase sweep frequency signal to produce a phase swept signal s 1 (b); phase sweeping the signal s 2 (b) using a second phase sweep frequency signal to produce a phase swept signal s 2 (b), the first and second phase sweep frequency signals being configured to cancel out any self induced interference caused by phase sweeping the signals s 1 (b) and s 2 (b); adding the phase swept signal s 2 (b) to the signal s 1 (a) to produce a summed signal s 3 ; and adding the phase swept signal s 1 (b) to the signal s 2 (a) to produce a summed signal s 4 .