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应用科学学报 ›› 2006, Vol. 24 ›› Issue (6): 551-554.

• 论文 •    下一篇

OFDM无线通信系统中源于单频率偏移的ICI分析

束锋1,2, 程时昕2, 陈明2, 尤肖虎2   

  1. 1. 南京理工大学电光学院, 江苏南京 210094;
    2. 东南大学移动通信国家重点实验室, 江苏南京 210096
  • 收稿日期:2005-09-12 修回日期:2005-12-26 出版日期:2006-11-30 发布日期:2006-11-30
  • 作者简介:束锋,博士,博士后,副教授,研究方向:未来和军事无线通信,E-mail:fengshu0101@yahoo.com.cn;程时昕,教授,博导,研究方向:未来无线通信,E-mail:sxcheng@seu.edu.cn;陈明,教授,博导,研究方向:未来无线通信,E-mail:chenming@seu.edu.cn;尤肖虎,教授,博导,研究方向:未来宽带移动通信理论技术,E-mail:xhuou@seu.edu.cn
  • 基金资助:
    国家自然科学基金(60496311);东南大学移动通信国家重点实验室开放研究基金资助项目(N200609)

A Simple Formula for ICI Caused by Single Frequency Offset in Wireless OFDM System

SHU Feng1,2, CHENG Shi-xin2, CHEN Ming2, YOU Xiao-hu2   

  1. 1. School of Electronic Engineering and Optoelectronic Techniques, Nanjing University of Science & Technology, Nanjing 210094, China;
    2. National Key Laboratory of Mobile Communications, Southeast University, Nanjing 210096, China
  • Received:2005-09-12 Revised:2005-12-26 Online:2006-11-30 Published:2006-11-30

PDF

130

被引次数

1

摘要： 在每条路径上具有相同的归一化单频率偏移(NSFO)条件下,通过数学技巧推导了由NSFO产生的归一化信道间干扰(ICI)功率(NIP)公式的简单形式.同Moose和Feng界相比,简单公式不仅容易且能精确地计算NIP.仿真确定该式成立条件:|NSFO|≤0.2和Nc ≥4,这里Nc是OFDM系统中总的子载波数.最后,将其应用到无线信道,推出由Doppler扩展产生的NIP公式.

关键词: 正交频分复用, 单频率偏移, 简单公式, 信道间干扰, 归一化干扰功率

Abstract: Normalized interchannel interference (ICI) power (NIP) caused by normalized single frequency offset (NSFO) has been derived to be one third of the square of NSFO by mathematical skills under the condition that each path has the same SFO.Compared with Moose's and Feng's bounds, this simple formula provides both easy and precise calculation for NIP. Simulation indicated that this identity holds when|NSFO|≤0.2 and Nc≤4 where Nc is the total number of subcarriers. Finally, this simple formula is applied in derving NIP expression resulting from Doppler spread in a wireless channel.

Key words: NIP, simple formula, SFO, ICI, OFDM

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