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Wireless communications system, wireless communications apparatus and wireless communications method

一种无线通信系统、信道信息的技术，应用在系统,方法及计算机程序,设备领域，能够解决SVD-MIMO不实用等问题，达到减少信息量、传输容量提高的效果

Active Publication Date: 2005-05-11
WI FI ONE TECH INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since one OFDM symbol can only carry 24 bits, 390 OFDM symbols are needed to transmit information, which makes SVD-MIMO very impractical

Method used

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  • Wireless communications system, wireless communications apparatus and wireless communications method
  • Wireless communications system, wireless communications apparatus and wireless communications method
  • Wireless communications system, wireless communications apparatus and wireless communications method

Examples

Experimental program
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Embodiment Construction

[0085] Embodiments of the present invention will be described below with reference to the drawings.

[0086] In the present invention, the receiver does not perform singular value decomposition on the channel information matrix H obtained by the receiver to generate UDV H In this way, the weighting coefficient matrix V of the transmitting antenna is obtained and the obtained matrix V is fed back to the transmitter, but the reference signal or symbol is sent to the transmitter, so that the singular value decomposition can be performed by the transmitter to obtain the necessary emission when transmitting data. Antenna weighting coefficient matrix V. This reduces the amount of information fed back from the receiver to the transmitter.

[0087] figure 1 The first embodiment according to the present invention schematically shows the structure of an SVD-MIMO communication system.

[0088] The transmitter space-time encodes the respective transmitted signals to multiplex the sign...

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PUM

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Abstract

In SVD-MIMO transmission using singular value decomposition, the amount of information fed back from the receiver to the transmitter is reduced. The receiver does not feed back the transmission weight vector V to the transmitter, which is obtained by the receiver through singular value decomposition of the channel information matrix, but sends reference symbols to the transmitter, and the transmitter obtains the channel information matrix and Singular value decomposition is performed to produce the vector V necessary to send the data. In the process of obtaining the vector V, the inconsistency between the channel matrices in opposite directions is compensated by calibration, which can compensate the errors between the transmitting and receiving analog devices of both the transmitter and the receiver.

Description

technical field [0001] The present invention relates to a system, device, method and computer program for wireless communication between a plurality of wireless base stations, such as communication via a wireless LAN (Local Area Network). In particular, the present invention relates to systems, methods and devices that enable broadband wireless transmission in residential or other similar communication environments. [0002] More specifically, the present invention relates to a system, device, method and computer program for enhancing transmission capability by employing a means of communication in which a transmitter and a receiver each have multiple antennas that are space-division multiplexed Mutual communication, namely MIMO communication; In particular, the present invention relates to such a system, method and device, which are suitable for realizing MIMO transmission by using the singular value decomposition (SVD) of the channel information matrix, each element in the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/06H04B7/08H04L1/06
CPCH04B7/0421H04B7/0615H04B7/0619H04B7/0842H04L1/0618H04L1/0656
Inventor 高野裕昭
Owner WI FI ONE TECH INT LTD
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