課程名稱︰無線網路基礎與應用
課程性質︰選修
課程教師︰蔡欣穆
開課學院：電資學院
開課系所︰資工所、網媒所
考試日期（年月日）︰2016.04.29
考試時限（分鐘）：
試題 :
1. Please calculate the maximum Doppler spread of the following system.
1. 4G LTE (using 700 MHz LTE band) on a high speed rail (300 km/h)
2. ETC (eTag) system that uses 902-928 MHz (car traveling speed 100 km/h)
2. Please calculate the minimum separation between antennas, if we were to use
spatial diversity for the above two systems.