path loss

简明释义

路径损耗

英英释义

例句

1.Factors like frequency and antenna height affect the level of path loss 路径损耗 experienced.

频率和天线高度等因素会影响所经历的路径损耗 path loss 水平。

2.Engineers often use models to predict path loss 路径损耗 in urban environments.

工程师们常常使用模型来预测城市环境中的路径损耗 path loss。

3.To improve signal strength, we must minimize path loss 路径损耗 in our design.

为了提高信号强度，我们必须在设计中最小化路径损耗 path loss。

4.The path loss 路径损耗 increases with the distance between the transmitter and receiver.

随着发射器和接收器之间距离的增加，路径损耗 path loss 会增加。

5.In wireless communication, the calculation of path loss 路径损耗 is crucial for determining the coverage area of a network.

在无线通信中，计算路径损耗 path loss 对于确定网络的覆盖范围至关重要。

作文

In the realm of wireless communication, understanding the concept of path loss is essential for optimizing signal transmission and reception. Path loss refers to the reduction in power density of an electromagnetic wave as it propagates through space. This phenomenon can significantly affect the quality and reliability of wireless communications, making it crucial for engineers and researchers to consider when designing communication systems.The primary factors contributing to path loss include distance, frequency, and environmental conditions. As the distance between the transmitter and receiver increases, the signal strength diminishes. This is due to the spreading of the wavefront over a larger area, leading to a decrease in power density. Additionally, higher frequency signals tend to experience greater path loss than lower frequency signals. This is because higher frequencies are more susceptible to obstacles and atmospheric absorption.Environmental factors also play a significant role in path loss. Urban areas with tall buildings, trees, and other obstructions can cause multipath propagation, where signals bounce off surfaces and arrive at the receiver at different times. This can lead to constructive or destructive interference, further complicating the signal reception process. In rural areas, terrain variations such as hills or valleys can also impact path loss, creating additional challenges for maintaining a strong signal.To quantify path loss, various models have been developed, such as the Free Space Path Loss (FSPL) model and the Hata model. The FSPL model provides a theoretical baseline for path loss in free space, while the Hata model takes into account urban environments and offers more realistic predictions for signal strength in city settings. Understanding these models allows engineers to predict how much signal attenuation will occur under different conditions, enabling them to design more effective communication systems.Moreover, mitigating path loss is a critical consideration in system design. Techniques such as using repeaters, antennas with higher gains, and advanced modulation schemes can help to counteract the effects of path loss. Repeaters amplify the signal and extend its range, while high-gain antennas focus the signal more effectively in a particular direction, reducing the overall impact of path loss.In conclusion, path loss is a fundamental concept in wireless communication that affects the performance of communication systems. By understanding the factors that contribute to path loss and employing strategies to mitigate its effects, engineers can enhance the reliability and efficiency of wireless networks. As technology continues to evolve, particularly with the advent of 5G and beyond, the importance of addressing path loss will only grow, making it an area of ongoing research and development in the field of telecommunications.

在无线通信领域，理解路径损耗的概念对于优化信号传输和接收至关重要。路径损耗指的是电磁波在空间传播时功率密度的减少。这种现象会显著影响无线通信的质量和可靠性，因此工程师和研究人员在设计通信系统时必须考虑这一点。导致路径损耗的主要因素包括距离、频率和环境条件。随着发射器和接收器之间的距离增加，信号强度会减弱。这是因为波前在更大的区域上扩散，导致功率密度降低。此外，高频信号往往比低频信号经历更大的路径损耗。这是因为高频信号对障碍物和大气吸收更敏感。环境因素也在路径损耗中发挥着重要作用。城市地区有高楼大厦、树木和其他障碍物，会导致多径传播，即信号反射到表面并以不同的时间到达接收器。这可能导致建设性或破坏性干扰，进一步复杂化信号接收过程。在农村地区，地形变化如丘陵或山谷也会影响路径损耗，为保持强信号创造额外挑战。为了量化路径损耗，已经开发了多种模型，如自由空间路径损耗（FSPL）模型和Hata模型。FSPL模型提供了自由空间中路径损耗的理论基准，而Hata模型则考虑了城市环境，为城市环境中的信号强度提供了更现实的预测。理解这些模型使工程师能够预测在不同条件下会发生多少信号衰减，从而使他们能够设计出更有效的通信系统。此外，缓解路径损耗是系统设计中的关键考虑因素。使用中继器、高增益天线和先进调制方案等技术可以帮助抵消路径损耗的影响。中继器放大信号并延长其范围，而高增益天线更有效地将信号集中在特定方向，从而减少路径损耗的总体影响。总之，路径损耗是无线通信中的一个基本概念，它影响通信系统的性能。通过理解导致路径损耗的因素并采用策略来减轻其影响，工程师可以提高无线网络的可靠性和效率。随着技术的不断发展，特别是5G及其之后的技术的出现，解决路径损耗的重要性只会增加，这使其成为电信领域持续研究和发展的一个领域。