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Power management method of MIMO (Multiple Input Multiple Output) network

A management method and power technology, applied in power management, advanced technology, climate sustainability, etc., can solve problems such as reducing power consumption, power consumption and data transmission rate constraints, and achieve the effect of reducing power consumption

Inactive Publication Date: 2012-11-28
CHONGQING UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today's MIMO research is mainly focused on improving channel quality, and less consideration is given to reducing power consumption, especially the dual issues of power consumption and data transmission rate constraints

Method used

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  • Power management method of MIMO (Multiple Input Multiple Output) network
  • Power management method of MIMO (Multiple Input Multiple Output) network
  • Power management method of MIMO (Multiple Input Multiple Output) network

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the drawings.

[0022] Reference Figure 1 ~ Figure 3 , A power management method for a MIMO network, the channel allocation method includes the following steps:

[0023] 1) Set the initial value of the optimal solution for transmitting data per bit, the initial value is as follows:

[0024] E b, min =+∞ (1)

[0025] 2) When the cycle conditions are met, the cycle conditions are as follows:

[0026] 1≤n t ≤N T , 1≤n r ≤N R (2)

[0027] Execute the loop to compare the current optimal solution with the currently calculated solution. The process is as follows:

[0028] 2.1) According to the current transceiver antenna variable n t , N r , Using the antenna selection algorithm, calculate the antenna mapping relationship H(n t , N r ), the channel capacity calculation method is as follows

[0029] C = max B log det ( I N R + P TX N T N 0 HR SS H H ...

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Abstract

The invention discloses a power management method of an MIMO (Multiple Input Multiple Output) network. The method is based on the mutual interference of an MIMO under a mobile system and is also called as an antenna management method. The power management method comprises the steps of: 1) obtaining minimum data rate information needed by communication from an MAC (Media Access Control) layer to ensure that the practical communication data rate is larger than limiting conditions; 2) estimating the channel capacity from information of a physical layer, wherein the estimating operation comprises of the steps of closed loop channel estimation and open loop channel estimation; 3) according to two conditions of the data rate and the channel capacity, generating an optimal power management scheme, and configuring an MIMO transceiver. According to the power management method, due to the power management, MIMO antenna states can be configured effectively, and the power consumption caused by the transmission of each bit of data through an MIMO front-end interface can be reduced, so that an MIMO antenna can be configured dynamically.

Description

Technical field [0001] The present invention designs a MIMO power management method, and specifically designs a power management method under the condition that the channel capacity of multiple antennas and the data rate of wireless transmission are limited. Background technique [0002] MIMO technology is considered to be the first choice for next-generation wireless broadband communications due to its significantly increased link capacity, and has passed current and emerging mobile wireless standards such as 802.11n, WiMAX and LTE. The key idea of ​​MIMO is to use multiple antennas at both ends of the transmitter and receiver to make good use of the multipath effect. MIMO can significantly increase the channel capacity compared to the traditional single-input single-output (SISO) link. [0003] Simultaneous use of multi-antenna MIMO network interface, due to multiple active RF links, the system power consumption increases significantly. The increase in power consumption will cau...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04W52/26H04W52/42
CPCY02D30/70
Inventor 张承畅李平杨力生牛晓军彭万权
Owner CHONGQING UNIV
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