| 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 |
| Keyword(7) |
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| Keyword(8) |
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| 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.) |
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| 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 |
| #Pages |
6 |
| Date of Issue |
2005-07-07 (SIP, WBS) |
|