北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2008, Vol. 31 ›› Issue (3): 67-70.doi: 10.13190/jbupt.200803.67.286

• 论文 • 上一篇    下一篇

高速环境下OFDM系统降低小区间干扰的导频设计方案

吴晓光1,2, 王 强1,2, 曹 鹏1,2, 康桂霞1,2, 张 平1,2   

  1. 1. 泛网无线通信教育部重点实验室(北京邮电大学),北京 100876;2.北京邮电大学 无线新技术研究所,北京 100876
  • 收稿日期:2007-09-18 修回日期:1900-01-01 出版日期:2008-06-28 发布日期:2008-06-28
  • 通讯作者: 吴晓光

A Pilot Sequence Design Scheme for Inter-Cell Interference Mitigation in OFDM Systems under Time-Varying Channels

WU Xiao-guang1,2, WANG Qiang1,2, CAO Peng1,2, KANG Gui-xia1,2, ZHANG Ping1,2   

  1. 1.Key Laboratory of Wireless Communication (Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China; 2. Wireless Technology Innovation Institute, Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China
  • Received:2007-09-18 Revised:1900-01-01 Online:2008-06-28 Published:2008-06-28
  • Contact: WU Xiao-guang

摘要:

针对多小区环境OFDM系统中,小区边缘高速移动的移动台,提出了一种有效的导频设计方案,对子载波干扰和和小区间干扰加以抑制,同时给出了相应的设计方案比较和仿真说明.

关键词: 正交频分复用, 导频设计, 子载波间干扰

Abstract:

In a fully-loaded orthogonal frequency division multiplexing (OFDM) cellular environment with a frequency reuse factor equal to 1, any users moving at the cell boundary at a high speed will suffer both an inter-carrier interference caused by the time varying (TV) channels and an inter-cell interference. The scheme of pilot design in the downlink at the cell boundary is addressed, aiming at mitigating the two interferences mentioned above. The properties of the pilots are described, and the simulation results are presented.

Key words: orthogonal frequency division multiplexing, pilot design, inter-carrier interference

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