TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Dynamic Fractional Frequency Reuse based on an Improved Water-Filling for Network MIMO |
| 영문제목(English Title) |
Dynamic Fractional Frequency Reuse based on an Improved Water-Filling for Network MIMO |
| 저자(Author) |
Noor Shahida M. K
Rosdiadee Nordin
Mahamod Ismail
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| 원문수록처(Citation) |
VOL 10 NO. 05 PP. 2124 ~ 2143 (2016. 05) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
In Long Term Evolution-Advanced (LTE-A) systems, Inter-cell Interference (ICI) is a prominent limiting factor that affects the performance of the systems, especially at the cell edges. Based on the literature, Fractional Frequency Reuse (FFR) methods are known as efficient interference management techniques. In this report, the proposed Dynamic Fractional Frequency Reuse (DFFR) technique improved the capacity and cell edge coverage performance by 70% compared to the Fractional Frequency Reuse (FFR) technique. In this study, an improved power allocation method was adopted into the DFFR technique to reach the goal of not only reducing the ICI mitigation at the cell edges, but also improving the overall capacity of the LTE-A systems. Hence, an improved water-filling algorithm was proposed, and its performance was compared with that of other methods that were considered. Through the simulation results and comparisons with other frequency reuse techniques, it was shown that the proposed method significantly improved the performance of the cell edge throughput by 42%, the capacity by 75%, and the coverage by 80%. Based on the analysis and numerical expressions, it was concluded that the proposed DFFR method provides significant performance improvements, especially for cell edge users.
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| 키워드(Keyword) |
Dynamic Fractional Frequency Reuse (DFFR)
FFR
power allocation
water-filling algorithm
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| 파일첨부 |
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