OFDM无线通信系统中源于单频率偏移的ICI分析

Journal of Applied Sciences ›› 2006, Vol. 24 ›› Issue (6): 551-554.

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

SHU Feng^1,2, CHENG Shi-xin², CHEN Ming², YOU Xiao-hu²

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

Abstract

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 N_c≤4 where N_c 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

CLC Number:

TN929.5

SHU Feng, CHENG Shi-xin, CHEN Ming, YOU Xiao-hu. A Simple Formula for ICI Caused by Single Frequency Offset in Wireless OFDM System[J]. Journal of Applied Sciences, 2006, 24(6): 551-554.

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

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