第三代合作夥伴計畫(3GPP)發布了基於5G-V2X通訊標準。這些標準允許車輛與道路基礎設施、其他車輛以及行人之間進行通訊。本文將使用Mode 2的配置進行模擬，Mode2 是5G-V2X中用於車輛之間的直接通訊的模式，接著將介紹關於模擬器WiLabV2Xsim的周邊知識以及兩個實驗會用到的參數，第一個實驗，分析三種子載波間距(Subcarrier spacing, SCS)，以及考慮帶內發射(In band emission, IBE)的情況，他們在調整參數下的效能，第二個實驗，討論使用候選資源列表L2所提升的效能，L2列表是使用者設備(User equipment, UE)避免傳輸時發生碰撞所使用的候選資源，有可能對效能影響不大，造成額外的訊號傳輸(Overhead)的現象。本文以不同的封包大小與調變與編碼策略(Modulation and Coding Scheme, MCS)作為參數，觀察他們的封包接收率(Packet Reception Ratio, PRR)，在第一個實驗中分析不同SCS的效能變化的趨勢，在第二個實驗中分析L2列表為效能帶來的影響，並提出建議。

The third Generation Partnership Project (3GPP) has been released to communication standards based on 5G-V2X that allows vehicles to communicate with road infrastructure, other vehicles, and pedestrians. This article will use the configuration of mode 2 which is the mode used for direct communication between vehicles in 5G-V2X for simulation.
The paper introduces the background knowledge about the simulator WiLabV2Xsim and the parameters used in the two experiments. The first, three types of subcarrier spacing (SCS), and in-band emission (IBE) variants to indicate the performance of variants are. The second is to discuss the improved performance using candidate resource L2 which is a candidate resource used by user equipment (UE) to avoid collisions during transmission without effecting performance and causing extra signal transmission (Overhead) phenomenon. To apply with the different packet sizes, modulation and coding scheme (MCS) are to observe their packet reception ratio (PRR).
In my study, the performance of different SCSs, the trend of performance changes and the performance impact of L2 were fully analyzed and revealed.

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