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Paper Abstract and Keywords
Presentation 2017-03-01 16:00
Feature detection scheme using Cyclic Prefix (CP) in OFDM Signal -- Hardware implementation of feature detector and its characteristics --
Akihide Nagamine (Titech), Kanshiro Kashiki (KDDI Research), Fumio Watanabe, Jiro Hirokawa (Titech) SR2016-97
Abstract (in Japanese) (See Japanese page) 
(in English) In the communication specification of the fifth generation mobile system, it is considered that frequency sharing will be examined, where several radio systems are operated. In order to promote such frequency effective system, a spectrum sensing technology with high performance is required. The authors have investigated the feature detection scheme using Cyclic Prefix (CP) in the OFDM signal. In this report, we implement this scheme in a hardware and investigate it using Radio Frequency (RF) signal. First, we address the design scheme appropriate for parameters in the embedded system. Then, we measure the signal feature value of an OFDM signal with varying the input C/N (Carrier to Noise power ratio) and investigate the probability performance regarding the signal detection. As a result, it is clarified that there exists an improvement limitation of the detection performance, which is achieved by the average operation in the signal processing. Such degradation matter has not been encountered in the past computer software simulation. We also describe that the limitation is analytically determined by the sampling rate error between at transmit and receive sides.
Keyword (in Japanese) (See Japanese page) 
(in English) OFDM signal / feature detection / Cyclic Prefix / hardware implementation / sampling rate error / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 480, SR2016-97, pp. 35-40, March 2017.
Paper # SR2016-97 
Date of Issue 2017-02-22 (SR) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Download PDF SR2016-97

Conference Information
Committee RCS SR SRW  
Conference Date 2017-03-01 - 2017-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To SR 
Conference Code 2017-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Feature detection scheme using Cyclic Prefix (CP) in OFDM Signal 
Sub Title (in English) Hardware implementation of feature detector and its characteristics 
Keyword(1) OFDM signal  
Keyword(2) feature detection  
Keyword(3) Cyclic Prefix  
Keyword(4) hardware implementation  
Keyword(5) sampling rate error  
1st Author's Name Akihide Nagamine  
1st Author's Affiliation Tokyo Institute of Technology (Titech)
2nd Author's Name Kanshiro Kashiki  
2nd Author's Affiliation KDDI Research, Inc. (KDDI Research)
3rd Author's Name Fumio Watanabe  
3rd Author's Affiliation Tokyo Institute of Technology (Titech)
4th Author's Name Jiro Hirokawa  
4th Author's Affiliation Tokyo Institute of Technology (Titech)
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Date Time 2017-03-01 16:00:00 
Presentation Time 25 
Registration for SR 
Paper # IEICE-SR2016-97 
Volume (vol) IEICE-116 
Number (no) no.480 
Page pp.35-40 
#Pages IEICE-6 
Date of Issue IEICE-SR-2017-02-22 

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