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平流層艇載CDMA系統(tǒng)的嵌入式多波束天線方案

程月波,  金榮洪,  劉波,  耿軍平

程月波, 金榮洪, 劉波, 耿軍平. 平流層艇載CDMA系統(tǒng)的嵌入式多波束天線方案[J]. 電子與信息學報, 2006, 28(8): 1395-1399.
引用本文: 程月波, 金榮洪, 劉波, 耿軍平. 平流層艇載CDMA系統(tǒng)的嵌入式多波束天線方案[J]. 電子與信息學報, 2006, 28(8): 1395-1399.
Cheng Yue-bo, Jin Rong-hong, Liu Bo, Geng Jun-ping. An Embedded Multibeam Configuration for CDMA Communication Systems on HAPS[J]. Journal of Electronics & Information Technology, 2006, 28(8): 1395-1399.
Citation: Cheng Yue-bo, Jin Rong-hong, Liu Bo, Geng Jun-ping. An Embedded Multibeam Configuration for CDMA Communication Systems on HAPS[J]. Journal of Electronics & Information Technology, 2006, 28(8): 1395-1399.

平流層艇載CDMA系統(tǒng)的嵌入式多波束天線方案

An Embedded Multibeam Configuration for CDMA Communication Systems on HAPS

  • 摘要: 該文改進了原先提出的微/宏波束天線覆蓋方案，采用更為復雜但更貼近實際的模型，尤其是改進了艇載天線波束方向圖和信道干擾的計算方法。該方案應用于平流層通信CDMA系統(tǒng)，通過在宏波束覆蓋范圍中嵌入微波束，解決平流層通信系統(tǒng)中由于用戶分布失衡而引起的熱點問題。針對不同的用戶分布和熱點位置，文中給出了調(diào)整微波束實現(xiàn)系統(tǒng)容量最大化的優(yōu)化方法。仿真結(jié)果表明在用戶分布失衡、熱點位置變化等情況下使用本文的嵌入式波束覆蓋方案仍然可以保持高而穩(wěn)定的系統(tǒng)容量。
    Abstract: An improvement of the micro/macro beam configuration used in HAPS (High Altitude Platform System) CDMA systems is proposed, in which the model employed for the optimization of the system is complex but more practical, especially in the improvement of the array pattern and the calculation of channel interferences. The configuration is expected to satisfy the requirement of CDMA systems on HAPS, and the relief of traffic burden in hot spot areas can be achieved by embedding micro-beams in the macro-beams at the hot spot locations. The optimization is realized by the adjustment of the micro-beam for different user distributions and different hot spot locations. The numerical results show that the hot spot problem can be relieved efficiently with the presented structure, and a higher and more stable system capacity is expectable despite the variation of the user distribution.
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  • Tong Z, Wu Y, Zhu H, Fu G, Jin R. Feasibility study of stratospheric platform and information systems in China, 2000 Stratospheric Platform System Workshop[C]. Tokyo, Japan, 2000: 60.68.[2]Niu Z.[J].Jin R, Liu S, Fu G, Wu Y, Tong Z. RD progress on stratospheric communication systems in China.2003,:-[3]ITU-R Doc. Recommendation ITU-RF.1569, Technical and operational characteristics for the fixed service using high altitude platform stations in the bands 27.528.35 GHz and 3131.3 GHz, ITU-R Doc. 9BL/25, May 2002.[4]Ryu Nitura, Masayuki Oodo, Yoshihiro Hase, Takayuki Inaba, Teijiro Sakamoto, Mikio Suzuki. Digital beamforming array antenna on-board stratospheric platform for quick response SDMA in the band 31/28 GHz, International Symposium onWireless Personal Multimedia Communications (WPMC'01)[C], Sep. 2001.[5]Cheng Yuebo, Jin Ronghong, Jiang Ran, Liu Bo. Hot spot relief with embedded beam for CDMA systems in HAPS, Journal of Electronics Information Technology, Journal of Electronics (China), 2006, 23(2): 172-175.[6]Joseph Shapira. Microcell engineering in CDMA cellular networks[J], IEEE Trans. on Vehicular Technology, 1994, 43(4): 817825.[7]Kim D H, Lee D D, Kim H J , Whang K C. Capacity analysis of macro/microcell CDMA with power ratio control and tiltedantenna[J]. IEEE Trans. on Vehicular Technology, 2000, 49(1): 3442.[8]Thornton J , Grace D. Optimizing an array of antennas for cellularcoverage from a high altitude platform[J]. IEEE Tran. on WirelessCommunications, 2003, 2(3): 484492.[9]Foo Y C, Lim W L, Tafazolli R, Barclay L. Other-cell interference and reverse link capacity of high altitude platform station CDMA system[J]. Electronics Letters, 2000, 36(22): 18811882.
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出版歷程
  • 收稿日期:  2004-11-19
  • 修回日期:  2005-05-08
  • 刊出日期:  2006-08-19

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