全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

适用于AdHoc网络移动终端的超分辨波束形成算法

DOI: 10.13190/jbupt.200605.19.165, PP. 19-23

Keywords: 智能天线,Ad,hoc,网络,移动终端,波达角估计,波束形成

Full-Text   Cite this paper   Add to My Lib

Abstract:

在Butler阵的基础上,设计了一种适合应用在Adhoc网络移动终端上的混合型智能天线结构,提出了一种将Butler阵和数字信号处理波达角(DOA)估计算法结合在一起的超分辨波束形成算法。用该算法理论推导出了天线对准期望信号方向时移相器的角度公式.仿真结果表明,与传统的Butler阵相比,该算法既利用了Butler阵简单易行的结构特点以及波束形成简单的优点,又使天线阵的主瓣可随着信号的来波方向进行调整,信号接收质量有了很大提高,并降低了电磁骚扰信号的影响。

References

[1]  Lin Tzuming, Dai Juinjia. A collision free MAC protocol using smart antenna in Ad hoc networks[J]. First IEEE Consumer Communications and Networking Conference, 2004: 301-306.
[2]  Lu J, Schlub R, Ohira T. A performance comparison of smart antenna technology for wireless mobile computing terminals[J]. IEEE 2001 Asia-Pacific Microwave Conference, 2001, 2: 581-584.
[3]  IEEE Std 802.11—1997, Information technology-telecommunications and information exchange between systems-local and metropolitan area networks-specific requirements-part 11: wireless lan medium access control(MAC) and physical layer(PHY) specifications[S]. 1997.
[4]  Toh C K. Ad hoc mobile wireless networks: protocols and systems[M]. New York: Prentice Hall, 2002.
[5]  Singh H, Singh S. Smart-802.11b MAC protocol for use with smart antennas[J]. IEEE International Conference on Communications, 2004(6): 3684-3688.
[6]  Spyropoulos A, Raghavendra C S. Asympotic capacity bounds for Ad hoc networks revisited: the directional and smart antenna cases[J]. IEEE Global Telecommunications Conference, 2003, 3: 1216-1220.
[7]  Singh H, Singh S. DOA-ALOHA: slotted ALOHA for Ad hoc networking using smart antennas[J]. IEEE 58th Vehicular Technology Conference, 2003, 5: 2804-2808.
[8]  Joseph C Liberti, Theodore S Rappaport. Smart antennas for wireless communications IS-95 and third generation CDMA applications[M]. New Jersey: Prentice Hall PTR, 2002. 8.
[9]  Jesse Butler, Ralph Lowe. Beam-forming matrix simplifies design of electronically scanned antennas[J]. Electronic Design, 1961, 9: 170-173.
[10]  张熙瑜, 杨峰, 聂在平. 一种八单元圆环阵实现多波束的方法[J]. 电子科技大学学报, 2002, 31(5): 465-469. Zhang Xiyu, Yang Feng, Nie Zaiping. A method of realizing multibeam by a eight-unit circular array[J]. Journal of University of Electronic Science and Technology, 2002, 31(5): 465-469.
[11]  杨煜, 冯正和. 用改进的Butler矩阵实现固定多波束面天线阵[J]. 微波学报, 2000, 16(3): 237-241. Yang Yu, Feng Zhenghe. A multibeam planar array realized by modified butler martix[J]. Journal of Microwares, 2000, 16(3): 237-241.
[12]  Li W R, Chu C Y, Lin K H, et al. Switched-beam antenna based on modified Butler matrix with low sidelobe level[J]. Electronics Letters, 2004, 40(5): 290-292.
[13]  Fragola A, Orefice M, Pirola M. A modified Butler matrix for tapered excitation of scanned arrays[J]. IEEE antennas and propagation society international symposium, 2001, 4: 784-787.
[14]  Denidni T A, Libar T E. Wide band four-port butler matrix for switched multibeam antenna arrays//14th IEEE Proceedings on Personal, Indoor and Mobile Radio Communications. Beijing: , 2003: 2461-2464.
[15]  张贤达, 保铮. 通信信号处理[M]. 北京: 国防工业出版社, 2000.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133