Presentation | 2002/6/20 A Study on Binary Spreading Sequences Suitable for Quasi-Synchronous CDMA with Multi-Code Transmission Masato SAITO, Heiichi YAMAMOTO, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Multi-code transmission is one of the schemes to achieve high data rate transmission in CDMA systems. However, it causes large amount of interference because multiple sequences are used at the same time. In this paper, we propose sequence sets of spreading sequences suitable for multi-code transmission in quasi-synchronous (QS) CDMA systems. Those sets are derived from Walsh-Hadamard sequences and have 0 even cross correlations among all sequences in the sets even in asynchronous transmission. The odd cross correlation properties are also better than conventional sequence sets in QS-CDMA systems. Even though all the sequences are used, only a little amount of degradation occurs in BER performance. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | quasi-synchronous CDMA / mutlicode transmission / spreading sequence / Walsh-Hadamard sequence / cross correlation |
Paper # | SAT2002-32 |
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Committee | SAT |
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Conference Date | 2002/6/20(1days) |
Place (in Japanese) | (See Japanese page) |
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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) | A Study on Binary Spreading Sequences Suitable for Quasi-Synchronous CDMA with Multi-Code Transmission |
Sub Title (in English) | |
Keyword(1) | quasi-synchronous CDMA |
Keyword(2) | mutlicode transmission |
Keyword(3) | spreading sequence |
Keyword(4) | Walsh-Hadamard sequence |
Keyword(5) | cross correlation |
1st Author's Name | Masato SAITO |
1st Author's Affiliation | Graduate School of Science and Technlogoy, NAIST() |
2nd Author's Name | Heiichi YAMAMOTO |
2nd Author's Affiliation | Graduate School of Science and Technlogoy, NAIST |
Date | 2002/6/20 |
Paper # | SAT2002-32 |
Volume (vol) | vol.102 |
Number (no) | 145 |
Page | pp.pp.- |
#Pages | 4 |
Date of Issue |