Transmitting method, device and system for multiple input-output comunication system

A multiple-input multiple-output communication system technology, applied in the field of transmission system, can solve the problem that the capacity of MIMO communication system cannot be increased, and achieve the effect of simple allocation principle, improved decoding performance, and increased capacity

Inactive Publication Date: 2006-09-13
吴中武
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a transmission method of an adaptive closed-loop MIMO communication system, which solv...

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  • Transmitting method, device and system for multiple input-output comunication system
  • Transmitting method, device and system for multiple input-output comunication system
  • Transmitting method, device and system for multiple input-output comunication system

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Embodiment Construction

[0031] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] figure 1 Shown is the implementation scheme of the self-adaptive closed-loop MIMO communication system of the present invention. First, the transmitter 100 receives the feedback information sent by the receiver 200, which includes all or part of the channel information and the signal-to-noise ratio of each sub-signal stream, and it is better if it includes a spatial channel matrix. Here, if there is only partial channel information, it is sufficient as long as the signal-to-noise ratio can be deduced through these channel information. The precoding control unit 105 calculates the power gain and precoding matrix of each sub-signal stream according to all or part of the received channel information and the signal-to-noise ratio of each sub-signal stream. The precoding matrix can be obtained in various ways, such as 802.16 The pro...

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Abstract

This invention discloses an emission method for an adaptive close loop multi-in multi-out communication system including the following steps: an emitter receives total or partial channel information fed back by a receiver including the S/N ratio of each signal flow to get a pre-coding matrix based on the information fed back by the receiver and distributes the power gain of every sub-signal flow unevenly based on the S/N ratio to adaptively select a modulation code mode for each sub-signal flow to modulate codes, pre-codes the sub-signal flow data and carries out empty time coding. This invention also discloses an emitter for realizing said method and an emitting system.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to a transmission method applied to an adaptive closed-loop MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) communication system, a transmitter and a transmission system including the transmitter. Background technique [0002] A prominent feature of MIMO technology in the field of wireless communication is that the system capacity is greatly improved. Based on information theory, it can be deduced that if the transmitting power of each transmitting antenna is the same (that is, assuming that the transmitting end has no prior knowledge of the channel matrix), the capacity of the MIMO communication system increases linearly with min(M, N), where M and N are respectively Number of transmit and receive antennas. At the same time, some scholars have proposed that if the channel matrix is ​​fully or partially known at the transmitting end, and the known channel m...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/005
Inventor 郁光辉曲红云
Owner 吴中武
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