Patent ID: 9166665
Filing Date: 2015-10-20
Classification: H04B,H04W

Abstract:
1. 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 with phases varied in opposite senses about a central phase so as to minimize changes in said central phase, transmitting said first signal set, each of said two signals transmitted by each of 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 for said signals in said new signal set, and transmitting said signals in said new signal set, wherein the step of determining the relative phase difference includes substantially optimizing the total power of the transmitted signal and the phase rotation associated with each of the first and second antennae in parallel while maintaining a power ratio associated with each antenna.