什麼是智慧型天線?

    智慧型天線是一個系統,是於基地台使用『天線陣列』,結合『訊號處理』的

容量,在空間中創造濾波器。 圖一為智慧型天線系統組織表。

 

Figure 1    智慧型天線圖示

 

    智慧型天線展示空間過濾能力它能夠二個信號從不同方向分離。在例

 中是將信號從80100分離。

 

   Figure 2    在空間領域中的濾波器

 

Figure 3   智慧型天線的容量 - 創造空間領域的濾波器(2-D)

 

智慧型天線的優點:

1、增益和干擾的減少

 

能創造出 space/antenna diversity

 

能創造出  directional beamforming

 

 

2、改善頻譜使用效率             

利用"空間分割多重進取"

 

 

參考資料:    

[1] Lal C. Godara, "Application of Antenna Arrays to Mobile Communications, Part I:

Performance Improvement, Feasibility, and System Considerations," Proceeding of the IEEE, vol. 85, no. 7, pp. 1031-1060, July 1997.

[2] Lal C. Godara, "Application of Antenna Arrays to Mobile Communications, Part II:

Beamforming and Directional-of-Arrival Considerations," Proceeding of the IEEE, vol. 85, no. 8, pp. 1193-1245, August 1997.

[3] Barry D. Van Veen and Kevin M. Buckley, "Beamforming: A versatile Approach to Spatial Filtering," IEEE ASSP Magazine, pp. 4-24, April 1988.