IEICE Technical Committee Submission System
Conference Paper's Information
Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2005-07-14 13:25
On a DS/SS Code-Diversity Communication System Using a Constant Amplitude Composite Sequence
Satoshi Hasebe, Shin'ichi Tachikawa (Nagaoka Univ. of Tech.), Masanori Hamamura (Kochi Univ. of Tech.)
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose a novel code-diversity communication system using a constant amplitude composite sequence to suppress multiple access interference . In the previously proposed code-diversity system, the output of transmitter becomes multi-level by using pseudo noise (PN) sequence that consists of the sum of several sequences. On the other hand, in the proposed system, binary level output can be obtained by using a constant amplitude composite sequence. Performance of the code-diversity system is improved by well combining the outputs of branch correlators, each of which has a reference sequence formed by distinct components of the composite sequence, to decrease the cross-correlation in the receiver. We compare BER performances of the previous and proposed code-diversity systems in a near-far problem, and examine the constructions of diversity branch for despread sequence. In addition, we note difference of output of transmitter in both methods, and examine the code-diversity using limiters. As a result, we explain that BER performance of the proposed system has nearly equal to that of the previous system. Further, depending on diversity branch construction, the possibility of BER improvement is shown. And we explain the advantage of the proposed system using limiters.
Keyword (in Japanese) (See Japanese page) 
(in English) constant amplitude composite sequence / code-diversity / DS/SSMA / cross-correlation / near-far problem / diversity branch / /  
Reference Info. IEICE Tech. Rep., vol. 105, no. 176, WBS2005-14, pp. 35-40, July 2005.
Paper # WBS2005-14 
Date of Issue 2005-07-07 (SIP, WBS) 
ISSN Print edition: ISSN 0913-5685
Download PDF

Conference Information
Committee SIP WBS  
Conference Date 2005-07-14 - 2005-07-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Ehime Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Signal Processing, Wideband System, and etc. 
Paper Information
Registration To WBS 
Conference Code 2005-07-SIP-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On a DS/SS Code-Diversity Communication System Using a Constant Amplitude Composite Sequence 
Sub Title (in English)  
Keyword(1) constant amplitude composite sequence  
Keyword(2) code-diversity  
Keyword(3) DS/SSMA  
Keyword(4) cross-correlation  
Keyword(5) near-far problem  
Keyword(6) diversity branch  
1st Author's Name Satoshi Hasebe  
1st Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
2nd Author's Name Shin'ichi Tachikawa  
2nd Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
3rd Author's Name Masanori Hamamura  
3rd Author's Affiliation Kochi University of Technology (Kochi Univ. of Tech.)
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
Speaker Author-1 
Date Time 2005-07-14 13:25:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # SIP2005-56, WBS2005-14 
Volume (vol) vol.105 
Number (no) no.174(SIP), no.176(WBS) 
Page pp.35-40 
Date of Issue 2005-07-07 (SIP, WBS) 

[Return to Top Page]

[Return to IEICE Web Page]

The Institute of Electronics, Information and Communication Engineers (IEICE), Japan