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Asymmetric perturbation method for a mobile transmit diversity communication device

A mobile device, wireless transmission technology, applied in the direction of space transmit diversity, wireless communication, diversity/multi-antenna system, etc., can solve problems such as current consumption efficiency gain

Active Publication Date: 2014-03-05
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Potential gain in current consumption efficiency because mobile transmit diversity devices can use feedback at the receiver to gain diversity gain to provide beamforming

Method used

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  • Asymmetric perturbation method for a mobile transmit diversity communication device
  • Asymmetric perturbation method for a mobile transmit diversity communication device
  • Asymmetric perturbation method for a mobile transmit diversity communication device

Examples

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Embodiment Construction

[0026] Embodiments of the present disclosure may be used in a communication system in conjunction with mobile transmit diversity devices. A communication system may include a mobile transmitter (also known as a modified communication device) that adjusts the nominal value of a transmit diversity parameter, such as the phase difference between signals transmitted on a first antenna and a second antenna and / or or power ratio. Although the implementations described in this application are described as using two antennas, it will be appreciated that the present disclosure is equally applicable to transmit diversity systems and devices having more than two antennas.

[0027] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, it will be understood by those skilled in the art that the present disclosure may be practiced without these specific details. In other instances, wel...

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Abstract

A method and an apparatus for selectively adjusting transmit diversity parameters in a mobile communication system including a mobile device and a base station. The mobile device transmits a signal set comprised of a plurality of signals differing only in phase from one another, receive in response an input parameter for each set, and adjust the phase difference of a subsequently transmitted signal set as a function of the input parameters.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application Serial No. 61 / 503,932, entitled "ASYMMETRIC PERTURBATION METHOD FOR A MOBILE TRANSMIT DIVERSITY COMMUNICATION DEVICE," filed July 1, 2011, which is hereby incorporated by reference in its entirety . technical field [0003] The present disclosure relates generally to the field of mobile wireless communications, and more particularly to adjusting phase in mobile transmit diversity communications devices using asymmetric perturbations as a means of controlling received power levels at base stations. Background technique [0004] A transmit diversity communication device is a communication device having multiple transmit paths that simultaneously transmit respective transmit signals that differ in transmit diversity signals (eg, relative phase, relative amplitude, or relative power). One goal of mobile transmit diversity is to obtain constructive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04W52/0212H04B7/0404H04B7/0671H04B7/0623H04B7/0617H04B7/0682Y02D30/70
Inventor S·王
Owner GOOGLE LLC