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Multi-user dispatching method for multi-input multi-output system

A multi-user scheduling and multi-output technology, applied in diversity/multi-antenna systems, baseband system components, space transmit diversity, etc., can solve problems such as system capacity decline and achieve high system capacity effects

Inactive Publication Date: 2011-09-14
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the algorithm may "exclude" users who increase the system capacity, resulting in a decrease in system capacity

Method used

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  • Multi-user dispatching method for multi-input multi-output system
  • Multi-user dispatching method for multi-input multi-output system
  • Multi-user dispatching method for multi-input multi-output system

Examples

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, the system of the present invention includes a transmitting end Tr and a receiving end U 1 ,...,U K . Each receiver corresponds to a user. The following is for the convenience of description, unless otherwise specified, the receiving end and the user will use it indiscriminately.

[0025] In order to further describe the present invention, the following examples are specifically considered: there is only one transmitting terminal Tr in the system, and 4 transmitting antennas are configured, and the transmitting power is P=10dB, and there is U 1 ,...,U K There are K receiving ends in total, and each receiving end has one and only one receiving antenna. The following will describe this example in conjunction with the system flow chart.

[0026] The whole system workflow is as follows figure 2 Shown:

[0027] The transmitting ...

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Abstract

The invention provides a multi-user dispatching method for a multi-input multi-output system, which comprises that: a transmitting end transmits a channel estimation signal to each receiving end; the receiving end carries out channel estimation and feeds back the channel estimation to the transmitting end; the transmitting end realizes user selection through the projection on an orthogonal space of a selected user channel vector, and adopts a system capacity standard to determine the selected user; and finally, the transmitting end transmits data to all users acquired by dispatching. The number of the selected users is adaptively adjusted and changed along with the current channel state so as to improve the transmission rate of the multi-input multi-output system and acquire the promotionof system performance.

Description

technical field [0001] The invention belongs to wireless communication technology, and in particular relates to a multi-user scheduling method of a multi-input multi-output system. Background technique [0002] With the sharp increase in the number of mobile communication users and the rapid rise of wireless broadband services (such as multimedia services), people expect that future mobile communication systems can provide higher data transmission rates (above 100Mbps), higher spectral efficiency (10bps / Hz above). [0003] Multiple Input Multiple Output (MIMO) is a technology that configures multiple antennas at both the transmitting end and the receiving end. MIMO is an effective means to improve the spectrum efficiency, and it can double the spectrum efficiency of the system without increasing the transmit power. [0004] The application of practical MIMO systems will lead to many problems related to the scheduling problem. For broadcast channels, when a large number of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04L25/02H04B7/04H04B7/08
Inventor 葛晓虎阮冬冬孙俊王德胜林宏志刘应状朱光喜
Owner HUAZHONG UNIV OF SCI & TECH