Femtocell network interference alignment optimizing method

A technology of interference alignment and optimization method, applied in power management, wireless communication, electrical components and other directions, which can solve the problems of high algorithm complexity, insufficient utilization of total system power, and failure to comprehensively consider the impact of power allocation.

Active Publication Date: 2016-06-29
盐城市西方科技有限公司
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Problems solved by technology

However, the above studies did not make full use of the total power of the system, and the algorithm itself has a high complexity
Chinese patent document CN104540209A discloses a power allocation method for the interference alignment algorithm of a multi-user system. This method dynamically all

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  • Femtocell network interference alignment optimizing method
  • Femtocell network interference alignment optimizing method
  • Femtocell network interference alignment optimizing method

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[0039] The present invention will be further clarified below in conjunction with the drawings and specific embodiments.

[0040] Such as figure 1 Shown is the structure diagram of the femtocell network system of K user of the present invention.

[0041] The present invention is based on the femtocell network partial feedback interference alignment algorithm of downlink power allocation, such as image 3 As shown, including the following steps:

[0042] Step 1: Initialize the information interaction, collect and obtain the wireless parameter information of femtocell network base station attribution, antenna configuration, frequency, location, neighboring area; collect the wireless space channel status information between each femtocell base station and femtocell users. figure 1 The system shown includes K femtocell base stations and K femtocell users, and it is assumed that the number of femtocell base station antennas is M and the number of femtocell user antennas is N.

[0043] Ste...

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Abstract

The invention discloses a femtocell network interference alignment optimizing method.The femtocell network interference alignment optimizing method includes the following steps that 1, wireless parameter information is initialized; wireless space channel state information between femtocell base stations and femtocell users is collected; 2, transmitting power values of the femtocell base stations to femtocell receivers are initialized; 3, a femtocell network downlink signal receiving model is established; 4, a pre-coded matrix Vi and an interference suppression matrix Ui are initialized; 5, interference iteration calculation is performed to calculate whether the interference leakage power of the femtocell users is eliminated or not, the operation is finished if the interference is eliminated, and the step 6 is executed if the interference still exists; 6, the channel quality and signal sending rate are assessed; 7, the transmitting power of the femtocell base stations is calculated and updated; 8, the pre-coded matrix Vi and the interference suppression matrix Ui are calculated and updated; 9, the step 5 is repeated, the iteration calculation continues till convergence is achieved.The femtocell network interference alignment optimizing method gives a comprehensive consideration to channel factors and signal vector transmitting rate and is a novel downlink dynamic power control method.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a partial feedback interference alignment optimization method based on femtocell downlink transmission power allocation. Background technique [0002] Recent studies have shown that user services in indoor places account for 70% of the voice traffic and data traffic of mobile services. According to current network operation experience, mobile users spend 60% of their time in indoor environments such as enterprises and homes. In a modern society with dense high-rise buildings, wireless signals have poor penetration ability to buildings, walls, and beautiful decorations, resulting in large space loss and transmission loss, and the effect of macro base stations on indoor coverage is not good. With the explosive increase in demand for cloud technology and big data services, indoor users urgently need to improve the communication coverage environment, which also puts fo...

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Application Information

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IPC IPC(8): H04W52/24H04W52/26H04W52/34
CPCH04W52/241H04W52/244H04W52/267H04W52/346
Inventor 解志斌鹿存东李效龙苏胤杰
Owner 盐城市西方科技有限公司
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