xx年初級通信工程師(上午)試題與答案-資料下載頁
2024-11-07 11:10本頁面
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【正文】 ol Mode Channel Measurement Coded Modulation （ 92） Shift Modulation System for Mobile munications Synchronous Mobile systems Spreading Modulation ● The Hertz is used as a unit to measure （ 93） . （ 93） loss ● Inside the Inter, the data is routed to the puter via work devices called （ 94） . （ 94） ● Early cellular systems were （ 95） .They operated by directly modulating a voicewaveform on a carrier and transmitting cell phones in the same cell were assigned different carrier frequencies, and adjacent cells used different set of （ 96） . （ 95） （ 96） slots ● A satellite system is posed basically （ 97） a satellite in space and many earth stations on the ground which links to it. （ 97） ● 閱讀下面的短文，回答 98~100 題 【 Until the popular adoption of mobile phones in 1990s, pagers fulfilled the role of mon personal and mobile munications. Today, pagers mainly support the “critical messaging” markets. They are the ideal solution for very quick, very reliable personal or group messaging. Unlike many other mobile munications works, they continue to work in times of emergency or disaster as they do not suffer from work overload as has been proven many times. For this reason, they are still very popular with emergency service personal, medical personal, and information technology support staff.】 Since 1990, pagers have started to bee （ 98） than before. Pagers are the ideal solution for （ 99） .It has been proven many times that （ 100） . （ 98） A. more popular B. less popular C. more reliable D. less reliable （ 99） service browsing image processing （ 100） can reduce work overload do not suffer from work overload can reduce work overload do not suffer from work over
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