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Paper Abstract and Keywords
Presentation 2012-03-08 10:05
ISI and ICI Compensation with Large Delay Spread Channel Estimation based on Pilot Symbol's Cyclic Property for SP-OFDM
Taichi Sakaue, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ)
Abstract (in Japanese) (See Japanese page) 
(in English) Scattered pilot based OFDM can accuretely estimate the channel state information (CSI) with small number pilot signals under the fast fading channel. In OFDM, the guard interval (GI) is inserted in order to eliminate the inter-symbol-interference (ISI)and inter-carrier-interference (ICI) due multipath fading. In general, GI is usually designed to be longer than the delay spread of channel. Furthermore, the channel estimation of SP is property operated since data signals are assigned between scattered pilots. To overcome this problem, in this thesis, we propose the novel FFT interpolation method with considering the pilot cyclic property and ISI and ICI compensation method. In the proposed method, the time domain impulses are calculated by using FFT interpolation with null signal and the faraway responses by using the threshold of noise variance. In addition, we eliminate ISI and ICI using the identified CSI. From the simulation result, the proposed method can achieve superior BER performance compared with the conventional SP-OFDM under the large delay spread channels.
Keyword (in Japanese) (See Japanese page) 
(in English) SP-OFDM / pilot's cyclic property / FFT interpolation / ISI / ICI / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 467, CS2011-114, pp. 87-91, March 2012.
Paper # CS2011-114 
Date of Issue 2012-03-01 (CAS, SIP, CS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee CAS CS SIP  
Conference Date 2012-03-08 - 2012-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Niigata 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network Processor, Signal Processing for communication, and Wireless LAN/PAN, etc. 
Paper Information
Registration To CS 
Conference Code 2012-03-CAS-CS-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) ISI and ICI Compensation with Large Delay Spread Channel Estimation based on Pilot Symbol's Cyclic Property for SP-OFDM 
Sub Title (in English)  
Keyword(1) SP-OFDM  
Keyword(2) pilot's cyclic property  
Keyword(3) FFT interpolation  
Keyword(4) ISI  
Keyword(5) ICI  
1st Author's Name Taichi Sakaue  
1st Author's Affiliation Chiba University (Chiba Univ)
2nd Author's Name Chang-Jun Ahn  
2nd Author's Affiliation Chiba University (Chiba Univ)
3rd Author's Name Tatsuya Omori  
3rd Author's Affiliation Chiba University (Chiba Univ)
4th Author's Name Ken-ya Hashimoto  
4th Author's Affiliation Chiba University (Chiba Univ)
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Date Time 2012-03-08 10:05:00 
Presentation Time 25 
Registration for CS 
Paper # IEICE-CAS2011-122,IEICE-SIP2011-142,IEICE-CS2011-114 
Volume (vol) IEICE-111 
Number (no) no.465(CAS), no.466(SIP), no.467(CS) 
Page pp.87-91 
#Pages IEICE-5 
Date of Issue IEICE-CAS-2012-03-01,IEICE-SIP-2012-03-01,IEICE-CS-2012-03-01 

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