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Paper Abstract and Keywords
Presentation 2011-03-02 10:30
Packet Combining Scheme for Single-carrier HARQ Using QRM-ML Block Signal Detection
Tetsuya Yamamoto, Kazuki Takeda, Fumiyuki Adachi (Tohoku Univ.) RCS2010-251
Abstract (in Japanese) (See Japanese page) 
(in English) QR decomposition with M-algorithm maximum likelihood block signal detection (QRM-MLBD) can significantly improve the achieve the bit error rate (BER) performance of single-carrier (SC) transmission and achieve the BER close to the matched filter (MF) bound. However, its computational complexity is still very high. Recently, we showed that replacing the cyclic prefix (CP) by the known training sequence (TS) reduces the required number of surviving paths in the M-algorithm and thus can further reduce the computational complexity of QRM-MLBD. Hybrid automatic repeat request (HARQ) is an indispensable error control technique for wireless packet access. The HARQ throughput depends on the packet combining scheme. In this paper, we study the packet combing scheme suitable for SC HARQ using QRM-MLBD. We propose a ML block signal detection using recursive QR packet combining (recursive QRM-MLBD), which incorporates the packet combining into the QR decomposition and M-algorithm. We will show, by computer simulation, that the recursive QR packet combining provides a better throughput performance than the conventional bit-level log likelihood ratio (LLR) packet combining.
Keyword (in Japanese) (See Japanese page) 
(in English) Single-carrier / HARQ / packet combining / QR decomposition / M-algorithm / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 433, RCS2010-251, pp. 19-24, March 2011.
Paper # RCS2010-251 
Date of Issue 2011-02-23 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Download PDF RCS2010-251

Conference Information
Committee RCS MoNA SR  
Conference Date 2011-03-02 - 2011-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) YRP 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2011-03-RCS-MoMuC-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Packet Combining Scheme for Single-carrier HARQ Using QRM-ML Block Signal Detection 
Sub Title (in English)  
Keyword(1) Single-carrier  
Keyword(2) HARQ  
Keyword(3) packet combining  
Keyword(4) QR decomposition  
Keyword(5) M-algorithm  
1st Author's Name Tetsuya Yamamoto  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Kazuki Takeda  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Fumiyuki Adachi  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Date Time 2011-03-02 10:30:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2010-251 
Volume (vol) IEICE-110 
Number (no) no.433 
Page pp.19-24 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2011-02-23 

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