carrier signal-to-noise ratio

简明释义

载波信噪比

英英释义

例句

1.The technician measured the carrier signal-to-noise ratio 载波信号噪声比 to ensure the communication system was functioning optimally.

技术人员测量了载波信号噪声比以确保通信系统正常运行。

2.A high carrier signal-to-noise ratio 载波信号噪声比 is essential for clear audio transmission in radio broadcasting.

高载波信号噪声比对于广播中的清晰音频传输至关重要。

3.Engineers aim to improve the carrier signal-to-noise ratio 载波信号噪声比 to enhance data transmission rates.

工程师们旨在提高载波信号噪声比以增强数据传输速率。

4.The carrier signal-to-noise ratio 载波信号噪声比 can significantly affect the performance of wireless networks.

载波信号噪声比会显著影响无线网络的性能。

5.During the experiment, we observed a drop in the carrier signal-to-noise ratio 载波信号噪声比 due to interference from other signals.

在实验中，我们观察到由于其他信号的干扰，载波信号噪声比下降。

作文

In the realm of telecommunications and signal processing, the concept of carrier signal-to-noise ratio plays a crucial role in determining the quality and reliability of transmitted information. The carrier signal-to-noise ratio (CNR) is defined as the ratio of the power of the desired carrier signal to the power of background noise. This metric is vital because it directly affects the clarity and intelligibility of the received signal. A higher CNR indicates that the carrier signal is much stronger than the noise, leading to better performance in communication systems.To understand the significance of the carrier signal-to-noise ratio, consider a scenario where a radio station broadcasts a signal. If the CNR is high, listeners will enjoy clear audio without interruptions or distortions caused by noise. However, if the CNR is low, the signal may become muddled, making it difficult for listeners to comprehend what is being said. This principle applies not only to radio but also to various forms of communication, including television broadcasting, mobile phone networks, and satellite communications.Moreover, the carrier signal-to-noise ratio is particularly important in digital communication systems. In these systems, data is represented by discrete signals, and a high CNR ensures that the receiver can accurately interpret the transmitted bits. For instance, in a Wi-Fi network, if the CNR falls below a certain threshold, data packets may be lost or corrupted, resulting in slower internet speeds and a frustrating user experience.Engineers and technicians often strive to improve the carrier signal-to-noise ratio through various methods. One common approach is to enhance the transmitter's power, which increases the strength of the carrier signal. Another method involves using advanced filtering techniques to reduce the impact of noise. Additionally, the placement of antennas can significantly influence the CNR; positioning them in areas with minimal interference can lead to substantial improvements.The importance of the carrier signal-to-noise ratio extends beyond practical applications; it also has theoretical implications in the field of information theory. Claude Shannon, a pioneer in this field, established that the capacity of a communication channel is fundamentally linked to the CNR. According to Shannon's theorem, there exists a maximum rate at which information can be transmitted over a noisy channel, which is determined by the CNR. This relationship highlights how critical it is to maintain a favorable carrier signal-to-noise ratio for efficient communication.In conclusion, the carrier signal-to-noise ratio is an essential concept in telecommunications and signal processing, influencing both the quality of communication and the efficiency of data transmission. Understanding and optimizing the CNR can lead to significant improvements in various communication systems, ensuring that users receive clear and reliable information. As technology continues to evolve, the significance of maintaining a high carrier signal-to-noise ratio will remain paramount in delivering seamless communication experiences across different platforms and devices.

在电信和信号处理领域，载波信号与噪声比的概念在确定传输信息的质量和可靠性方面发挥着至关重要的作用。载波信号与噪声比（CNR）被定义为所需载波信号的功率与背景噪声的功率之比。这个指标至关重要，因为它直接影响接收信号的清晰度和可懂性。较高的CNR表明载波信号远强于噪声，从而导致通信系统的更好性能。要理解载波信号与噪声比的重要性，可以考虑一个场景，其中广播电台发送信号。如果CNR很高，听众将享受清晰的音频，没有噪声造成的中断或失真。然而，如果CNR很低，信号可能会变得模糊，使得听众难以理解所说内容。这一原则不仅适用于广播，还适用于各种通信形式，包括电视广播、移动电话网络和卫星通信。此外，载波信号与噪声比在数字通信系统中尤其重要。在这些系统中，数据由离散信号表示，高CNR确保接收器能够准确解读传输的比特。例如，在Wi-Fi网络中，如果CNR低于某个阈值，数据包可能会丢失或损坏，导致互联网速度变慢以及用户体验不佳。工程师和技术人员通常努力通过各种方法来提高载波信号与噪声比。一种常见的方法是增强发射机的功率，从而增加载波信号的强度。另一种方法涉及使用先进的滤波技术来减少噪声的影响。此外，天线的放置可以显著影响CNR；将其放置在干扰最小的区域可以带来显著改善。载波信号与噪声比的重要性不仅体现在实际应用中；它在信息理论领域也具有理论意义。克劳德·香农（Claude Shannon）是该领域的先驱，他建立了通信信道的容量与CNR之间的基本联系。根据香农定理，存在一个最大的信息传输速率，该速率由CNR决定，这强调了保持良好的载波信号与噪声比对于高效通信的重要性。总之，载波信号与噪声比是电信和信号处理中的一个重要概念，影响着通信的质量和数据传输的效率。理解和优化CNR可以在各种通信系统中带来显著改善，确保用户接收到清晰可靠的信息。随着技术的不断发展，保持高载波信号与噪声比的重要性将在不同平台和设备上提供无缝通信体验方面继续发挥重要作用。