| Presentation | 2003/6/16 Quasi-Synchronous Multi-Code CDMA Systems with Parallel Combinatory Transmission Koji HOSHINA, Masato SAITO, Minoru OKADA, Heiichi YAMAMOTO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Parallel combinatory CDMA (PC-CDMA) systems can improve the data rate of CDMA systems compared with direct-sequence CDMA systems, therefore PC-CDMA systems are effective system for CDMA up-link of higher data-rate. In this study, we have evaluated the quasi-synchronous (QS-) PC-CDMA systems in order to improve the BER of conventional PC-CDMA systems. For that purpose, we have applied AOWH (Asynchronously Orthogonal Walsh-Hadamard) sequences sets to QS-PC-CDMA systems. Because sequences in AOWH sequences sets have suitable cross-correlation properties for quasi-synchronous multi-code transmission, those might be available in QS-PC-CDMA systems. We have found that significantly better performance can be obtained by using AOWH sequences sets to QS-PC-CDMA systems compared with the case of conventional orthogonal code sequences. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | parallel combinatory CDMA system / quasi-synchronous spreading sequence / multi-code transmission / Hadamard sequence |
| Paper # | WBS2003-26,SAT2003-18 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2003/6/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Quasi-Synchronous Multi-Code CDMA Systems with Parallel Combinatory Transmission |
| Sub Title (in English) | |
| Keyword(1) | parallel combinatory CDMA system |
| Keyword(2) | quasi-synchronous spreading sequence |
| Keyword(3) | multi-code transmission |
| Keyword(4) | Hadamard sequence |
| 1st Author's Name | Koji HOSHINA |
| 1st Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology (NAIST)() |
| 2nd Author's Name | Masato SAITO |
| 2nd Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology (NAIST) |
| 3rd Author's Name | Minoru OKADA |
| 3rd Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology (NAIST) |
| 4th Author's Name | Heiichi YAMAMOTO |
| 4th Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology (NAIST) |
| Date | 2003/6/16 |
| Paper # | WBS2003-26,SAT2003-18 |
| Volume (vol) | vol.103 |
| Number (no) | 140 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |