| 講演名 | 2014-10-30 Optimum Number of Transmit Antennas for STTD in MC-CDMA Distributed Antenna Network(Poster session) , |
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| 抄録(英) | Distributed antenna network (DAN) can mitigate the problems arising from of the propagation path loss and shadowing loss and achieve better transmission performance over the entire cell area compared to centralized antenna network (CAN). Many transmit antennas are spatially distributed in DAN while they are co-located at the same base station in CAN. The use of space time block coded transmit diversity (STTD) can further improve performance. As the multi-access scheme, multicarrier code division multiple access (MC-CDMA) is attractive since it can alleviate a sophisticated resource allocation while achieving the frequency diversity gain. In this paper, the STTD downlink transmission is considered for MC-CDMA DAN. In STTD downlink, higher spatial antenna diversity gain is obtained by increasing the number of transmit antennas. However, the STTD code rate reduces. Furthermore, since the propagation time delays of signals transmitted from some transmit antennas may exceed the cyclic prefix (CP) length of MC-CDMA, the inter-block interference (IBI) is produced. Therefore, there exist the optimum numbers of transmit antennas to be involved in STTD downlink. In this paper, we derive an expression for the received SINR after de-spreading and evaluate, by computer simulation, the STTD downlink capacity to discuss about the optimum number of transmit antennas. |
| キーワード(和) | |
| キーワード(英) | Distributed antenna network / MC-CDMA / transmit antenna diversity |
| 資料番号 | SR2014-61 |
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| 研究会情報 | |
| 研究会 | SR |
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| 開催期間 | 2014/10/23(から1日開催) |
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| 申込み研究会 | Smart Radio(SR) |
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| 本文の言語 | ENG |
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| サブタイトル（和） | |
| タイトル（英） | Optimum Number of Transmit Antennas for STTD in MC-CDMA Distributed Antenna Network(Poster session) |
| サブタイトル（和） | |
| キーワード(1)（和/英） | / Distributed antenna network |
| 第 1 著者 氏名（和/英） | / Yumeto MORI |
| 第 1 著者 所属（和/英） | Department of Communications Engineering, Graduate School of Engineering, Tohoku University |
| 発表年月日 | 2014-10-30 |
| 資料番号 | SR2014-61 |
| 巻番号（vol） | vol.114 |
| 号番号（no） | 284 |
| ページ範囲 | pp.- |
| ページ数 | 6 |
| 発行日 | |