Adaptive Array Antenna for Space-Time Coding Signals in Indoor Wireless LAN Systems

用于室内无线 LAN 系统中空时编码信号的自适应阵列天线

• 批准号: 12650377
• 负责人: KATAYAMA Masaaki
• 金额: $ 2.11万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650377/
• 关键词: Indoor Wireless LAN; Time Space Coding; MIMO; Adaptive Array Antenna; Reliability; Electro-Magnetic Environments; OFDM; Multiple-Antenna Systems; 電波伝搬; CDMA; 複数送信アンテナ; 干渉除去; 多次元符号化; 多次元符合化

Indoor radio communication systems with multiple transmit and receive antennas are studied. Theoretical join-optimization of transmit and receive ends are discussed for single carrier systems. Employment of OFDM scheme is also considered for the multiple antenna systems. Proposed error correction coding designed together with data mapping to signal-antenna space is found to have better performance than conventional SFBC in which coding and mapping are designed separately. The knowledge of the instantaneous features of in-door electro-magnetic environments is necessary for the design of radio systems, however, measurement is based on average power in former studies, which can not be used for the design of coding/mapping scheme for multiple antenna systems. In this study, we have build a measurement system, which can measure indoor propagation at multiple points in wide frequency range at the same time for long observation duration. As the results, features of indoor radio environment, such as time-frequency-space dependence of the propagation loss, are clarified. Anew benchmark, I.e., a measure of reliability, is also studied, and multiple antenna systems are evaluated with this measure. As the byproducts of this research, control method of adaptive array antenna with interference cancellation in CDMA systems, application of antenna beam control with interference cancellation for CDMA packet systems, and some consideration of amplitude fluctuations of OFDM systems are studied.

研究了具有多个发射和接收天线的室内无线电通信系统。针对单载波系统，讨论了发射端和接收端的理论联合优化问题。对于多天线系统，还考虑了OFDM方案的使用。提出的纠错编码设计与数据映射到信号天线空间被发现有更好的性能比传统的SFBC，其中编码和映射分别设计。室内电磁环境的瞬时特性对于无线电系统的设计是必不可少的，但以往的研究都是基于平均功率的测量，不能用于多天线系统编码/映射方案的设计。在本研究中，我们建立了一个测量系统，它可以测量室内传播在多个点在宽的频率范围内，在同一时间进行长时间的观察。作为结果，室内无线电环境的特点，如传播损耗的时间-频率-空间依赖性，澄清。新的基准，即，还研究了可靠性的度量，并且利用该度量来评估多天线系统。作为本课题的研究成果，本文还研究了CDMA系统中干扰抵消自适应阵列天线的控制方法，干扰抵消天线波束控制在CDMA分组系统中的应用，以及OFDM系统中对幅度波动的一些考虑。

项目成果

久米忠史, 山里敬也, 坂耕一郎, 岡田啓, 片山正昭: "CDMAパケット通信システムにおける適応フィルタを用いたパケット検出と同期捕捉"電子惰報通信学会技術研究報告. vol.101. 33-38 (2001)

Tadashi Kume、Keiya Yamasato、Koichiro Saka、Kei Okada、Masaaki Katayama：“在 CDMA 分组通信系统中使用自适应滤波器进行分组检测和同步采集”电子信息通信工程师学会的技术报告，第 33-38 卷。 (2001)

TaKayuki Suzuki, Masaaki Katayama, Takaya Yamazato, Akira Ogawa: "A Study on Weight Control Scheme of Adaptive Array Antennas with Interference Canceler"Technical Report of IEICE. vol.RCS2000-15. 21-26

TaKayuki Suzuki、Masaaki Katayama、Takaya Yamazato、Akira Okawa：《带干扰消除器的自适应阵列天线权重控制方案研究》IEICE 技术报告。

H.Shi, H.Oowa, M.Katayama, H.Okada, T.Yamazato, A.Ogawa: "Performance of a Wireless Communication Systems with Time/Frequency/Space Coding"IEICE General Conference. SB-11-5. 527-528 (2000)

H.Shi、H.Oowa、M.Katayama、H.Okada、T.Yamazato、A.Okawa：“具有时间/频率/空间编码的无线通信系统的性能”IEICE 大会。

T.Kume, T.Yamazato, K.Ban, H.Okada, and M.Katayama: "A novel signal recognition and detection scheme for CDMA packet systems"Technical Report of IEICE, IEICE Technical report. vol.101, no.27. 33-38

T.Kume、T.Yamazato、K.Ban、H.Okada 和 M.Katayama：“一种新颖的 CDMA 分组系统信号识别和检测方案”IEICE 技术报告，IEICE 技术报告。

片山正昭: "〔招待論文〕無線通信システムの超高信頼性化を目指して"電子情報通信学会技術研究報告. vol.IT2002-14. 319-322 (2002)

Masaaki Katayama：“[特邀论文]瞄准无线通信系统的超高可靠性”IEICE技术研究报告vol.IT2002-14 (2002)。