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Research on the Key Technologies of Femtocell Interference Coordination

Author: LiuYuQiao
Tutor: FuFengLin；YangQingHai
School: Xi'an University of Electronic Science and Technology
Course: Communication and Information System
Keywords: Femtocell Interference coordination Frequency reuse System Capacity
CLC: TN929.5
Type: Master's thesis
Year: 2011
Downloads: 252
Quote: 2
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Abstract


In order to adapt to the global wireless communications showing a mobile, broadband, by the end of 2004 , 3GPP Long Term Evolution of 3G proposed . According to statistics , 60 % to 70 % of mobile telephone traffic occurs indoors, indoor mobile users to use the wireless cellular network services are concentrated. Femtocells in LTE appears to solve the problem of indoor coverage provides a new way of thinking , this paper proposed two kinds of home base station interference coordination method can be applied to LTE-Advanced standards. This paper describes the existing interference coordination and resource allocation scheme , on the basis of the design of two associated with the home base station interference coordination method . In a first method, the first physical location of the home base station based on information and the home base station transmit power calculating twenty-two interference ratio , and the home base station grouping , grouping Finally spectrum allocation of resources. The second method, finite femtocell collaboration orthogonal complement space algorithm and Gram-Schmidt algorithm to construct quasi-orthogonal group of fellow users , thus inhibiting fellow interference between users . The simulation can be seen that both methods can effectively improve the system capacity.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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