路口影像監視系統是先進交通管理系統(ATMS)中的一個次系統。一直以來被視為發展自動化事件監測系統的過程中一個重要的角色。在現行的情況中，交通控制中心以有線傳輸的方式建置路口監視系統，不但建設的彈性缺乏，而且建置以及維運的成本也偏高。WiMAX全球互通微波存取被視為新一代的無線通訊技術，不但擁有高度的建置彈性，而且提供高傳輸速率，相當適合用來進行影像串流的傳輸，與具有建置彈性的路口影像監測ATMS次系統。
本研究中，進行了先前一些對數位影像壓縮以及無線傳輸的文獻探討；並且用網路模擬軟體NS-2建置一以WiMAX網路為無線傳輸背景的交通管理系統情境。也利用不同的位元錯誤率(bit error rate)來呈現出兩種不同的的傳輸環境，進行比較。在模擬結束後分析其效能，並且找出在一基地台覆蓋的範圍內可提供穩定影像品質的監視器數目值大約是30。

Video surveillance system is a subsystem under the advanced traffic management systems (ATMS) which are considered as the core role in intelligent transportation systems (ITS). It is also an important part for developing the novel automatic ATMS technology. However, the current state of the video surveillance system relies on wired communications. Both building and maintaining costs are very high and not flexible.
A new wireless communication technology, called WiMAX, provides high transmission bandwidth, and is suitable for video transmission. The new technology can be used to build the video surveillance system in ATMS.
In this paper, we have an overview of the video surveillance system and WiMAX technology. A well-known network simulator, NS-2, is used to simulate the traffic scenario in the real world. We divided the scenarios into two categories to study the different transmission conditions by setting the GE error model.
The purpose of this thesis is to evaluate the performance for video quality and network transmission through extensive simulations. The simulation results indicate that a WiMAX base station can support about 30 connections of video with an acceptable quality.

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