| 講演名 | 2007-02-22 Cooperative Relaying MC/DS-CDMA Road to Vehicle Communication System , |
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| 抄録(英) | In this paper, a novel cooperative relaying road to vehicle communication system is proposed. The proposed system expands the communication area of road to vehicle communication by using the surrounding vehicles. The basic road to vehicle communication system enhanced in this paper is the MC/DS-CDMA system which can support broadcast (BC) and unicast (UC) communication in the same frequency by using variable spreading code. This basic system uses a small spreading factor for broadcast transmission to achieve high data rate and a large spreading factor for unicast transmission to reduce the interference among the signals respectively. For improving the performance of BC data transmission, Space-time block coding (STBC) technique by using adjacent plural access points (APs) is applied to BC data. In this paper, in order to improve the communication of road to vehicle communication, we propose a novel relayed system, in which the signals received at the users near to AP are relayed to the surrounding users which are in far from APs. By using this technique, the BER performance of users in far from APs can be improved and the interval of APs on the road can become large. The performance of the proposed system is evaluated by computer simulation under additive white Gaussian noise (AWGN) and Rayleigh fading environment. |
| キーワード(和) | |
| キーワード(英) | MC/DS-CDMA / Cooperative relaying / Scrambling code / STBC |
| 資料番号 | ITS2006-53,IE2006-238 |
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| 研究会情報 | |
| 研究会 | ITS |
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| 開催期間 | 2007/2/15(から1日開催) |
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| 申込み研究会 | Intelligent Transport Systems Technology (ITS) |
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| 本文の言語 | ENG |
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| タイトル（英） | Cooperative Relaying MC/DS-CDMA Road to Vehicle Communication System |
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| キーワード(1)（和/英） | / MC/DS-CDMA |
| 第 1 著者 氏名（和/英） | / Ranjith Padmasiri |
| 第 1 著者 所属（和/英） | Graduate School of Engineering, Tokyo University of Agriculture and Technology |
| 発表年月日 | 2007-02-22 |
| 資料番号 | ITS2006-53,IE2006-238 |
| 巻番号（vol） | vol.106 |
| 号番号（no） | 534 |
| ページ範囲 | pp.- |
| ページ数 | 6 |
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