Method and system for partitioning an antenna array and applying multiple-input-multiple-output and beamforming mechanisms

An antenna array and beamforming technology, which is applied in the field of sending multiple input and multiple output mechanisms and beamforming mechanisms, can solve problems such as not taking antenna correlation into account

Active Publication Date: 2008-08-27
CISCO TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They require beamforming for all antennas and do not take antenna correlation into account

Method used

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  • Method and system for partitioning an antenna array and applying multiple-input-multiple-output and beamforming mechanisms
  • Method and system for partitioning an antenna array and applying multiple-input-multiple-output and beamforming mechanisms
  • Method and system for partitioning an antenna array and applying multiple-input-multiple-output and beamforming mechanisms

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Embodiment Construction

[0017] Although the invention is shown below with respect to a limited number of examples, it will be understood that the invention can be applied to any telecommunications technology with any number of access schemes. These access technologies include Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA) and Orthogonal Frequency Division Multiple Access (OFDM-MA) and In any combination thereof, these access techniques can be synchronous or asynchronous, using frequency division duplex (FDD) or time division duplex (TDD).

[0018] The present invention provides an improved wireless communication system that benefits from both diversity and beamforming gains. Furthermore, given the antenna structure, the correlation between antennas is considered, and an optimization scheme for combining diversity / spatial multiplexing and beamforming is developed. Therefore, when using both beamforming and diversity / spatial multip...

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Abstract

A system and method are provided for configuring an antenna array having a predetermined number of antennas. After providing an antenna correlation matrix for all antennas with regard to a mobile terminal, the antenna array is virtually partitioned into two or more sub-arrays based on the antenna correlation matrix such that correlations among antennas within each sub-array are higher than correlations among antennas belonging to different sub-arrays. One or more beamf orming weights are generated corresponding to each antenna within the sub-arrays for applying to one or more signals transmitted therefrom, and at least one predetermined multiple-input-multiple-output (MIMO) mechanism is further applied among the sub-arrays by treating each sub-array as a virtual antenna.

Description

[0001] cross reference [0002] This application requires U.S. Provisional Patent Application No. 60 / 733,837, filed on November 4, 2005, entitled "Optimized Scheme of Combining Transmit Diversity, Spatial Multiplex and Beamforming for an Antenna Array", and filed on August 29, 2005, entitled " Optimized Scheme of Combining Transmit Diversity and Beamforming for an Antenna Array" U.S. provisional patent application No. 60 / 712,631 and the title "Method and System for Partitioning an Antenna Array and Applying Multiple-Input-Multiple-Output" filed on December 21, 2005 and Beamforming Mechanisms” of U.S. Patent Application No. 11 / 316,101 of priority. technical field [0003] The present invention relates generally to antenna systems, and more particularly to improved methods for combining transmit multiple-input multiple-output (MIMO) mechanisms, such as transmit diversity or spatial multiplexing schemes, and beamforming mechanisms for antenna arrays. Background technique [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/00
CPCH04B7/0697H04B7/0669H04B7/0691H04B7/0617H01Q3/2605H04B7/0413H04B7/0619H04B7/065H04B7/0671
Inventor 杭·金约翰·加拉布纳
Owner CISCO TECH INC
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