| Presentation | 2017-05-25 A Study on Design of Two-Layered Pseudo-Noise Code for Optical-Wireless Code Shift Keying/Synchronous CDMA Takashi Tokunaga, Hiromasa Habuchi, Yusuke Kozawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, a design of two-layered pseudo-noise (PN) code for optical-wireless code shift keying(CSK) is considered. One of the important issues encountered in optical-wireless CSK systems is to design a PNcode for enhancing code division multiple access (CDMA) capability and a ratio N/L between the number of codes(N) and the PN code length (L). In this paper, a code shift keying system using two-layered PN codes which consistof outer-codes with M chips and inner-codes with W chips is proposed. Since the receiver of the proposed systemcan use the two-step demodulation scheme, it is expected that the proposed system suppress the performancedegradation caused by co-channel interference. Consequently, N/L of the proposed system achieves more than 1. Moreover, when the length of the inner code is NI and the length of outer code is No, the proposed system canaccommodate NI users without co-channel interference in synchronous CDMA. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical wireless communication / Code shift keying / Bi-orthogonal code / Optical PN code / Optical code division multiple access / Modified Pseudo orthogonal M-sequence / two-layered pseudo-noise code |
| Paper # | WBS2017-1 |
| Date of Issue | 2017-05-18 (WBS) |
| Conference Information | |
| Committee | WBS / SAT |
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| Conference Date | 2017/5/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Utsunomiya Univ. Yoto Campus |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Coding, Modulation, Demodulation, Signal Processing Technique, etc. |
| Chair | Fumiaki Maehara(Waseda Univ.) / Takatoshi Sugiyama(Kogakuin Univ.) |
| Vice Chair | Masanori Hamamura(Kochi Univ. of Tech.) / Fumie Ono(NICT) / Toshinori Susuki(Tohoku Gakuin Univ.) / Hiroyuki Tsuji(NICT) |
| Secretary | Masanori Hamamura(Tokyo City Univ.) / Fumie Ono(Mitsubishi Electric) / Toshinori Susuki(Okinawa College) / Hiroyuki Tsuji(KDDI Research) |
| Assistant | Yusuke Kozawa(Ibaraki Univ.) / Akira Nakamura(Tokyo Univ. of Science) / Ryohei Nakamura(National Defense Academy) |
| Paper Information | |
| Registration To | Technical Committee on Wideband System / Technical Committee on Satellite Telecommunications |
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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 Design of Two-Layered Pseudo-Noise Code for Optical-Wireless Code Shift Keying/Synchronous CDMA |
| Sub Title (in English) | |
| Keyword(1) | Optical wireless communication |
| Keyword(2) | Code shift keying |
| Keyword(3) | Bi-orthogonal code |
| Keyword(4) | Optical PN code |
| Keyword(5) | Optical code division multiple access |
| Keyword(6) | Modified Pseudo orthogonal M-sequence |
| Keyword(7) | two-layered pseudo-noise code |
| 1st Author's Name | Takashi Tokunaga |
| 1st Author's Affiliation | Ibaraki University(Ibaraki Univ.) |
| 2nd Author's Name | Hiromasa Habuchi |
| 2nd Author's Affiliation | Ibaraki University(Ibaraki Univ.) |
| 3rd Author's Name | Yusuke Kozawa |
| 3rd Author's Affiliation | Ibaraki University(Ibaraki Univ.) |
| Date | 2017-05-25 |
| Paper # | WBS2017-1 |
| Volume (vol) | vol.117 |
| Number (no) | WBS-51 |
| Page | pp.pp.1-5(WBS), |
| #Pages | 5 |
| Date of Issue | 2017-05-18 (WBS) |