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Radio communication system, transmission device, and communication control method

A technology of wireless communication system and sending equipment, applied in the direction of radio transmission system, baseband system, transmission system, etc., can solve problems such as system capacity shortage, and achieve the effect of improving communication quality

Inactive Publication Date: 2011-01-26
KYOCERA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this requires a large amount of feedback information, which strains system capacity

Method used

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  • Radio communication system, transmission device, and communication control method
  • Radio communication system, transmission device, and communication control method
  • Radio communication system, transmission device, and communication control method

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Experimental program
Comparison scheme
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Embodiment Construction

[0030] The following is a detailed description of embodiments of the present invention.

[0031] For example, the transmission weight is defined by the following formula.

[0032] [Formula 1]

[0033] H M ( g ) = 1 M [ h nm ( g ) ] = 1 M [ e { j 2 πn M ( m + g G ) } ]

[0034] Through the above formula, a method for calculating SINR as a reference for selecting a transmission ...

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Abstract

Provided is a transmission device comprising a transmission weight generating unit (21) for generating a plurality of transmission weights, a communication quality acquiring unit (22) for acquiring information on the communication quality of each inherent path, and a transmission weight determining unit (23) for selecting, when the transmission device transmits on inherent paths, such one of the transmission weights generated by the transmission weight generating unit (21) that the communication quality of the inherent path having the worst communication quality in a plurality of inherent paths may become the best.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Patent Application No. 2008-45869 (filed on February 27, 2008), the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a wireless communication system, a transmitting device, and a communication control method that perform MIMO communication by using multiple antennas on both the transmitting side and the receiving side. Background technique [0004] In recent years, MIMO (Multiple Input Multiple Output) transmission technology has been put into practical use in communication systems. For MIMO transmission, devices on both the sending and receiving sides use multiple antennas to increase transmission speed and reliability. Furthermore, it is known that the characteristics of MIMO can be further improved by configuring the system such that the device on the reception side feeds back the obtained channel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J99/00
CPCH04B7/0632H04L1/20H04L25/03343H04B7/0413
Inventor 中山琢
Owner KYOCERA CORP