講演抄録/キーワード |
講演名 |
2015-12-18 17:05
Capacity Comparison of 4-by-4 MIMO Channel Using Leaky Coaxial Cables for Linear-cells with Different Power Allocation Methods ○Sha Li・Yafei Hou・Takeshi Higashino・Minoru Okada(NAIST) WBS2015-83 ITS2015-55 RCC2015-85 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
As the increasing of the demands of wireless access, the improvement of capacity are highly required, especially in some long and narrow areas, such as train stations, shopping malls, or airports and so on which also called as linear-cell environment.
In this paper, we discuss the methods of increasing capacity of wireless channel with a novel multiple input multiple output (MIMO) system using leaky coaxial (LCX) cable and evaluate its capacity with different power allocation methods. Comparing with the system using Omni-directional antennas, proposed LCX-MIMO can achieve higher capacity with less interference and less handover process. In addition, our proposal can utilize one LCX cable as two antennas and further configure a 4-by-4 MIMO channel using two LCX cables, which can reduce the required space of equipment and materiel cost. In this paper, we will compare the capacity of the LCX-MIMO system with three methods of power allocation, equal power (EP) power allocation, Spatial-domain water-filling (SWF) power allocation and Spatial-Frequency domain Water-filling power allocation or Double domains water-filling (DWF) allocation. The results in 2.4GHz and 5GHz bands show that our proposed LCX-MIMO can achieve higher capacity than that of using Omni-directional antennas. It also has good channel capacity even if the spacing between the pair of LCXs is as small as 2cm. In addition, it also shows that Double domain WF algorithm improves the capacity compared with the other methods at the non line-of-sight. |
キーワード |
(和) |
/ / / / / / / |
(英) |
Capacity / LCX-MIMO / MIMO System / Water-Filling Algorithm / / / / |
文献情報 |
信学技報, vol. 115, no. 366, RCC2015-85, pp. 251-256, 2015年12月. |
資料番号 |
RCC2015-85 |
発行日 |
2015-12-10 (WBS, ITS, RCC) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
WBS2015-83 ITS2015-55 RCC2015-85 |
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