| No | 193812 |
|---|---|
| 標題（和） | Density Evolution Analysis of the Iterative Partial Multiuser Detector for CS-CDMA/CP |
| 標題（英） | Density Evolution Analysis of the Iterative Partial Multiuser Detector for CS-CDMA/CP |
| 研究会名（和） | 回路とシステム, 通信方式, 信号処理 |
| 研究会名（英） | Circuits and Systems, Communication Systems, Signal Processing |
| 開催年月日 | 2009-03-02 |
| 終了年月日 | 2009-03-03 |
| 会議種別コード | 5 |
| 共催団体名（和） | |
| 資料番号 | CAS2008-108, SIP2008-171, CS2008-82 |
| 抄録（和） | For the purpose of allowing a more bandwidth efficient CS-CDMA/CP system for more active users, an iterative partial multiuser detector (IPMUD) has been proposed for the case where the condition of multiuser interference-free (MUI-free) transmission is no longer satisfied.\r\nThe IPMUD jointly detects data from the desired user and interfering users with varying degrees of accuracy and it has been shown that its performance depends on the detection quality for the interfering users. In this paper, we clarify the influence of the detetion quality for the interfering users on the detection for the desired user by using the density evolution analysis approach. From the analysis, we see that the detection accuracy of data of the interfering users is essential for the detetion of the desired user. Therefore, some modifications to the IPMUD, $\\it{e.g.}$ widened detection window or giving up iterative detection of some rather badly-detected interfering users, can be considered to offer better tradeoff between the system performance and detector complexity. |
| 抄録（英） | For the purpose of allowing a more bandwidth efficient CS-CDMA/CP system for more active users, an iterative partial multiuser detector (IPMUD) has been proposed for the case where the condition of multiuser interference-free (MUI-free) transmission is no longer satisfied.\r\nThe IPMUD jointly detects data from the desired user and interfering users with varying degrees of accuracy and it has been shown that its performance depends on the detection quality for the interfering users. In this paper, we clarify the influence of the detetion quality for the interfering users on the detection for the desired user by using the density evolution analysis approach. From the analysis, we see that the detection accuracy of data of the interfering users is essential for the detetion of the desired user. Therefore, some modifications to the IPMUD, $\\it{e.g.}$ widened detection window or giving up iterative detection of some rather badly-detected interfering users, can be considered to offer better tradeoff between the system performance and detector complexity. |
| 収録資料名（和） | 電子情報通信学会技術研究報告 |
| 収録資料の巻号 | Vol.108, No.453,454,455 |
| ページ開始 | 43 |
| ページ終了 | 48 |
| キーワード（和） | |
| キーワード（英） | Convolutional spreading CDMA,multiuser interference,iterative partial multiuser detection,density evolution analysis,multipath channel |
| 本文の言語 | ENG |
| 著者（和） | 岳麗 |
| 著者（ヨミ） | ユエ リ |
| 著者（英） | Li Yue |
| 所属機関（和） | 電気通信大学 |
| 所属機関（英） | The University of Electro-Communications |
| 著者（和） | Nalin S. Weerasinghe |
| 著者（ヨミ） | Nalin S. Weerasinghe |
| 著者（英） | Nalin S. Weerasinghe |
| 所属機関（和） | 電気通信大学 |
| 所属機関（英） | The University of Electro-Communications |
| 著者（和） | 韓承鎬 |
| 著者（ヨミ） | |
| 著者（英） | Chenggao Han |
| 所属機関（和） | 電気通信大学 |
| 所属機関（英） | The University of Electro-Communications |
| 著者（和） | 橋本猛 |
| 著者（ヨミ） | ハシモト タケシ |
| 著者（英） | Takeshi Hashimoto |
| 所属機関（和） | 電気通信大学 |
| 所属機関（英） | The University of Electro-Communications |