Patent ID: 8634495

Claim:
A method for a mobile communications device to produce a new signal set, where said device has previously transmitted signal sets and previously received responsive power control signals, where said new signal set includes signals with a determined relative phase difference, and said mobile communications device includes a vector modulator, first and second antennae, a receiver, and a processor, comprising the steps of: producing a first signal set with said vector modulator, said first signal set comprised of two signals, each of the two signals having a respective phase, transmitting said first signal set, said two signals transmitted by said first and second antennae to a distant communication device, receiving a power control signal in response from said distant communication device, determining a relative phase difference and power for said new signal set, said determination being a function of a plurality of previously transmitted signal sets and a plurality of previously received power control signals, producing a new signal set with said vector modulator, where said processor determines a relative phase difference and power for said signals in said new signal set, wherein producing the new signal set comprises varying the two respective phases in a different direction from each other, and transmitting said signals in said new signal set wherein said function further includes at least one term whereby the new signal set has a perceived phase whose change from a previous perceived phase is minimized.