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Separated sub-array simulation wave beam training method based on codebook

A training method and a technology of simulating beams, applied in space transmit diversity, diversity/multi-antenna systems, radio transmission systems, etc., can solve the problems of few researches on separate sub-array structures, and achieve the effect of improving the overall performance

Active Publication Date: 2016-09-07
南京易太可通信技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Analog beamforming techniques have been extensively studied, but most of them are analyzed for shared array structures, and little research is done for separate subarray structures

Method used

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  • Separated sub-array simulation wave beam training method based on codebook
  • Separated sub-array simulation wave beam training method based on codebook
  • Separated sub-array simulation wave beam training method based on codebook

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Experimental program
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Embodiment Construction

[0035] A codebook-based separate subarray simulation beam training method, comprising the steps of:

[0036] Step 1: There are a total of N at the transmitter t Antenna subarrays at the transmitting end, and a total of N at the receiving end r receiving end antenna sub-array, the i-th transmitting end antenna sub-array is any one of the transmitting end antenna sub-array, and the j receiving end antenna sub-array is any one of the receiving end antenna sub-array, wherein i=1, 2,...,N t , j=1,2,...,N r , time period T t,i Indicates the time it takes for the i-th antenna subarray at the transmitting end to determine its antenna weight vector, the time period T r,j Indicates the time it takes for the jth receiving subarray to determine its antenna weight vector, and the received signal quality Indicates the signal quality of the m-th beam of the i-th transmitter antenna subarray received by the receiver, Represents the signal quality received by the nth beam of the jth re...

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Abstract

The invention discloses a separated sub-array simulation wave beam training method based on a codebook, and belongs to the technical field of wireless communication. The method uses a receiving terminal for omnidirectional reception and determination of antenna weighted vectors of transmission terminal sub-arrays. Then the transmission terminal sub-arrays use the determined antenna weighted vectors to transmit signals directedly to determine antenna weighted vectors of receiving terminal sub-arrays. Whether practical performance requirements are satisfied is determined; if the requirements are not satisfied, phases of phase shifters of the sub-arrays are subjected to fine tuning operation on the basis of the determined antenna weighted vectors of the sub-arrays until the required performance is achieved. Through fine tuning operation of the phases of the phase shifters of the sub-arrays, wave beam aligning precision is improved, and the transmission performance of a system is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a codebook-based separate subarray analog beam training method. Background technique [0002] Since the millimeter wave (Millimeter wave) has a large bandwidth, the millimeter wave communication has become a technology with development potential in the future 5G wireless communication system. The combination of millimeter wave and multiple input multiple output (Multiple Input Multiple Output, MIMO) can increase the rate in a wide range and improve the transmission quality. The shorter wavelength of the high-frequency millimeter wave can realize the integration of the antenna array, but the shorter wavelength also brings serious path loss, resulting in a large attenuation of the millimeter wave signal during transmission. The array gain provided by the antenna array It can compensate for millimeter wave signal attenuation. In addition, the antenna arra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/06
CPCH04B7/0482H04B7/0617
Inventor 何世文
Owner 南京易太可通信技术有限公司