無線通訊在2.1GHz與2.5GHz的都會區射頻通道量測之研究

WiMAX技術和產業的不斷成熟，2009年WiMAX在台灣開始了商用，(Worldwide Interoperability for Microwave Access；WiMAX)此技術擁有較高的資料傳輸速度與能有效克服頻率選擇性衰減通道(frequency selective fading channel)的特性，而傳播模型對於網路規劃估算準確度有著決定性的影響。在2.5GHz WIMAX工作頻段，目前沿用COST231-HATA模型，而此模型適用頻段為150MHz～2000MHz，為提高傳播模型的準確性，進行WIMAX工作頻段傳播模型校正。本次傳播模型校正利用2.1GHz 與2.5GHz頻段的傳播特性差異進行比較。CW測試、資料處理、傳播模型校正，並對2.1GHz與2.5GHz傳播模型校正結果進行了對比分析，給出了2.5GHz相對於2.1GHz傳播模型的建議修正值。對現有2.1GHz與2.5GHz傳播模型中都會區場景的傳播模型進行了測試，給出了場景COST231-HATA模型的Cm建議參數值。最後在高雄市做了實際現網WiMAX 2.5GHz站台實際測試與校正後模型進行驗證，以便有著豐富累積的2.1GHz頻段傳播模型推廣至WiMAX 2.5GHz頻段。

關鍵字

無線通訊；都會區射頻通道量測； 2.1GHz與2.5GHz

並列摘要

WiMAX technology and industry continues to mature, WiMAX has started a business in Taiwan in 2009, (Worldwide Interoperability for Microwave Access; WiMAX) this technology has higher data transfer speed and can effectively overcome the attenuation of frequency-selective channel (frequency selective fading channel) characteristics, and the spread of model estimates for the accuracy of the network planning has a decisive impact.Band in the 2.5GHz WIMAX, using the COST231-HATA existing model, and this model is applicable for the band 150MHz ~ 2000MHz. To enhance the accuracy of the work carried out WIMAX band propagation model calibration. Use both 2.1GHz and 2.5GHz-band propagation characteristics to compare the differences. According to CW testing, data processing, dissemination of model correction and 2.1GHz and 2.5GHz spread of model calibration results of comparative analyzed, given out the 2.5GHz model as opposed to 2.1GHz spread the value of the proposed amendment. 2.1GHz and 2.5GHz on the existing spreading model in the metropolitan areas scenarios testing, given out the scenes of the COST231-HATA model parameter values Cm recommendations. Finally, Kaohsiung City had done a real WiMAX 2.5GHz network which was the actual site testing and verified the after correction model, in order to have a rich accumulation of 2.1GHz-band propagation model experiences which can be extended to WiMAX 2.5GHz frequency band.

並列關鍵字

RADIO CHANNEL OF 2.1GHz and 2.5GHz ； WIRELESS COMMUNICATION IN URBAN AREA

參考文獻

〔4〕 A. Freedman and O. Kelma “Propagation models for coexistence studies” , IEEE 802.16.3c-01/80 Sep.2001 http://wirelessman.org/tg3/contrib/802163c-01_80.pdf

〔14〕 “Mansour, N.A, “RF Prediction Tool Selection and Modeling of Microcells and PCS,” in 1994 Third Annual International Conference, San Diego, CA, Setp. pp.145–149. Oct. 1994.

〔1〕 V. Erceg, L.J.Greenstein, S.Y. Tjandra, S.R. Parkoff, A. Gupta, B. Kulic, A.A Julius,. R. Bianchi, and AT&T Wireless Services, WA. Redmond, , “An empirically based path loss model for wireless channels in suburban environments,” IEEE JSAC, vol. 17, no. 7, pp. 1205-1211, July 1999,

Google Scholar

http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=778178

Google Scholar

〔2〕 K.V.S Hari & Carl Bushue “Channel Models for Fixed Wireless Applications”, ,IEEE 802.16.3-00/13 July 2001 http://wirelessman.org/tga/docs/80216a-03_01.pdf

Google Scholar

國際替代計量

無線通訊在2.1GHz與2.5GHz的都會區射頻通道量測之研究

未授權

主題瀏覽