Paper Info
Title
A New Time Domain Intercarrier Interference Reduction Method For Ofdm Systems In Time Varying Channels
Abstract
In orthogonal frequency division multiplexing (OFDM) based systems, intercarrier interference (ICI) created by the time varying property of wireless fading channels, degrades the data detection performance. This degradation strengthens especially when the mobile speed is relatively high or the number of subcarriers is large. Here, we interpret the time varying channel as the linear transformation of the time invariant channel impulse response. By using this new channel model, the time varying component can be reduced in the time domain by applying the inverse transformation to the received sequence. Then, the remaining time invariant channel component is removed by the equalization in the frequency domain. Some complexity reduction schemes are also proposed to make the proposed method feasible for practical implementation. The simulation results show that the new method offers a significant improvement in terms of bit error rate performance, especially when the number of subcarriers is larger than about 500.
Year
DOI
Venue
2012
10.1587/transcom.E95.B.3492
IEICE TRANSACTIONS ON COMMUNICATIONS
Keywords
Field
DocType
intercarrier interference, ICI reduction, OFDM, time varying channel
Time domain,Interference reduction,Computer science,Communication channel,Electronic engineering,Orthogonal frequency-division multiplexing,Distributed computing
Journal
Volume
Issue
ISSN
E95B
11
0916-8516
Citations 
PageRank 
References 
1
0.37
4
Authors
2
Name
Order
Citations
PageRank
Jinyong Lee110.37
Young-Lok Kim2174.26