本論文針對5G通訊系統應用於智慧工廠之小細胞基站架設，根據政府目前規劃釋出之3.5GHz頻段，先行於臺灣典型中小型工廠環境—鐵皮工廠，以及同樣擁有訊號多重反射特性之室內走道，與一般辦公環境進行寬頻通道量測，利用幾項國內外常用以描述寬頻通道之通道特性參數，如平均過量延遲(Mean Excess Delay)、均方根延遲擴展(RMS Delay Spread)、同調頻寬(Coherence Bandwidth)及通道容量(Channel Capacity)共同進行分析比較。經過此量測分析，得到鐵皮工廠之建材有強烈反射無線電波的特性，使得通道特性參數平均值大於其餘兩種環境，呈現出另一種通道特性的面貌，另本論文也於此三種環境內增加不同發射端，企圖找出最佳架設位置，得出盡量將傳送端移動至中央附近且附近並沒有阻礙物之高處為佳的結果。根據最新政府規畫5G專網頻譜政策，將其頻段制定在4.8-4.9GHz，雖與本篇論文所使用之3.5GHz頻段有所差別，但內文提及之室內寬頻通道量測的特性仍有雷同之處，還是能夠提供相當顯著的建議。

This paper focus on the small cell base stations for 5G communication systems in smart factories. According to the 3.5GHz frequency band currently released by the government, we did some broadband measurements in SME factory which is made by steel frames and iron sheet. And another environment - corridor has lots of multipath and similar channel characteristics. Otherwise, we also did same measurements in a different environment which is office environment. Using several commonly channel characterization parameters to descried broadband channel, such as Mean Excess Delay, RMS Delay Spread, Coherence Bandwidth and Channel Capacity. After this measurement and analysis, it is obtained that the building materials of the iron sheet factory have strong reflection and the average channel characteristics results are different from other two environments. And we try to find the best position to set up a transmitter of small cell base station so that we put the transmitter in different position when doing the measurements. Finally, we get the answer that the best position is as close as possible to the center of the hole environment and no obstacles nearby.
According to the latest government planning of 5G private network spectrum policy, the frequency band is set from 4.8 to 4.9 GHz. Although it is different from the 3.5 GHz frequency band which is used in this paper, the indoor broadband channel measurement characteristics are similar, so it can still provide quite significant suggestions.

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