Impact of Imperfect Channel State Information on Quasi-Decentralized Cooperative Inter-Cell Interference Cancellation with Fractional Frequency Reuse

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2015/10/01

タイトル(英語): Impact of Imperfect Channel State Information on Quasi-Decentralized Cooperative Inter-Cell Interference Cancellation with Fractional Frequency Reuse

著者名: Kazuki Maruta (NTT Access Network Service Systems Laboratories), Atsushi Ohta (NTT Access Network Service Systems Laboratories), Masataka Iizuka (NTT Access Network Service Systems Laboratories), Takatoshi Sugiyama (Kogakuin University)

著者名(英語): Kazuki Maruta (NTT Access Network Service Systems Laboratories), Atsushi Ohta (NTT Access Network Service Systems Laboratories), Masataka Iizuka (NTT Access Network Service Systems Laboratories), Takatoshi Sugiyama (Kogakuin University)

キーワード: base station cooperation，inter-cell interference cancellation，fractional frequency reuse，imperfect channel state information

要約(英語): This paper clarifies the practical performance of cooperative communication systems with multiple base stations on realistic environment with imperfect channel state information (CSI). Achievable spectral efficiencies are evaluated to compare the previously proposed inter-cell interference (ICI) cancellation scheme with fractional frequency reuse (FFR) as well as the cooperative multiuser multiple-input multiple-output (MU-MIMO). The proposed method realizes quasi-decentralized cooperation and can significantly reduce preprocessing complexity on large-scale base station cooperation. In the system level simulations, two CSI imperfections are considered: estimation error and restrictions on available number of CSI. The results revealed that the proposed method can achieve higher spectral efficiency than cooperative MU-MIMO, 3.5% on average value and 112% higher at the CDF=5%, even in imperfect CSI conditions.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.135 No.10 （2015） 特集：産業界を支える情報通信技術

本誌掲載ページ: 1169-1179 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/135/10/135_1169/_article/-char/ja/