modulated carrier

简明释义

巳地波

英英释义

例句

1.The modulated carrier in this communication system allows for multiple channels to be transmitted simultaneously.

该通信系统中的调制载波允许多个频道同时传输。

2.The engineers adjusted the frequency of the modulated carrier to improve signal quality.

工程师们调整了调制载波的频率，以改善信号质量。

3.In digital communications, the modulated carrier is essential for encoding information into a signal.

在数字通信中，调制载波对于将信息编码到信号中至关重要。

4.Using a modulated carrier, the data can be sent over long distances without significant loss.

使用调制载波，数据可以在长距离内发送而不会显著损失。

5.In radio broadcasting, the audio signal is transmitted using a modulated carrier to ensure clear reception.

在广播中，音频信号通过调制载波进行传输，以确保清晰接收。

作文

In the world of telecommunications, the concept of a modulated carrier plays a crucial role in the transmission of information over various media. A modulated carrier refers to a carrier signal that has been altered or modulated to encode information, such as voice, data, or video signals. This modulation process is essential because it allows the efficient use of bandwidth and enables multiple signals to be transmitted simultaneously without interference. The basic idea behind a modulated carrier is that a high-frequency carrier wave is modified in some way to carry the desired information. There are several methods of modulation, including amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). Each of these techniques alters the carrier wave differently, affecting its amplitude, frequency, or phase to convey the intended message. For example, in amplitude modulation, the strength of the carrier wave is varied in proportion to the information signal. This means that when the audio signal is louder, the amplitude of the carrier wave increases, and when the audio signal is softer, the amplitude decreases. This method is widely used in AM radio broadcasting. Conversely, frequency modulation varies the frequency of the carrier wave according to the information signal. FM is known for its superior sound quality and resistance to noise, making it a popular choice for music radio stations. The significance of a modulated carrier extends beyond traditional radio and television broadcasts. In modern communication systems, such as mobile phones and satellite communications, the principles of modulation are applied extensively. For instance, digital data is often transmitted using a modulated carrier to ensure that the information can be sent over long distances without degradation. This is particularly important in today's world, where high-speed internet access and reliable communication services are essential. Moreover, the concept of a modulated carrier is not limited to audio signals. It is also applicable in the realm of visual and data communications. For example, in video broadcasting, the video signal can be superimposed onto a modulated carrier to allow for the transmission of moving images over airwaves. Similarly, in computer networking, data packets are often transmitted using a modulated carrier to facilitate efficient communication between devices. Understanding the function and importance of a modulated carrier is vital for anyone studying telecommunications or involved in related fields. As technology continues to evolve, the methods of modulation will likely become more sophisticated, leading to improved transmission rates and better quality of service. Additionally, as we move towards a more connected world with the Internet of Things (IoT), the need for efficient and effective modulated carriers will only increase. In conclusion, the modulated carrier is a fundamental concept in communication technology that enables the transmission of information across various platforms. By altering a carrier wave to encode different types of information, modulation techniques allow for efficient use of bandwidth and improved signal quality. As the demand for faster and more reliable communication continues to grow, the role of modulated carriers will remain integral to the development of future communication systems.

在电信领域，‘调制载波’的概念在信息通过各种媒介的传输中发挥着至关重要的作用。‘调制载波’指的是一种经过改变或调制以编码信息（如语音、数据或视频信号）的载波信号。这个调制过程是必不可少的，因为它允许带宽的有效利用，并使多个信号能够同时传输而不发生干扰。‘调制载波’的基本概念是高频载波波形以某种方式被修改，以携带所需的信息。有几种调制方法，包括幅度调制（AM）、频率调制（FM）和相位调制（PM）。每种技术以不同的方式改变载波波形，影响其幅度、频率或相位，以传达所需的信息。例如，在幅度调制中，载波波形的强度根据信息信号的比例变化。这意味着当音频信号更响亮时，载波波形的幅度增加，而当音频信号较柔和时，幅度则减少。这种方法广泛应用于AM广播。相反，频率调制则根据信息信号变化载波波形的频率。FM因其卓越的音质和抗噪声能力而闻名，是音乐广播电台的热门选择。‘调制载波’的重要性不仅限于传统的广播和电视。在现代通信系统中，如移动电话和卫星通信，调制的原理被广泛应用。例如，数字数据通常使用‘调制载波’进行传输，以确保信息可以在长距离内发送而不会退化。这在当今世界尤为重要，因为高速互联网接入和可靠的通信服务是必不可少的。此外，‘调制载波’的概念并不限于音频信号。它同样适用于视觉和数据通信的领域。例如，在视频广播中，视频信号可以叠加到‘调制载波’上，以允许通过无线电波传输动态图像。同样，在计算机网络中，数据包通常使用‘调制载波’进行传输，以促进设备之间的有效通信。理解‘调制载波’的功能和重要性对于任何学习电信或相关领域的人来说都是至关重要的。随着技术的不断进步，调制方法可能会变得更加复杂，从而提高传输速率和服务质量。此外，随着我们向更连接的世界（物联网）迈进，对高效和有效的‘调制载波’的需求只会增加。总之，‘调制载波’是通信技术中的一个基本概念，它使信息能够通过各种平台进行传输。通过改变载波波形以编码不同类型的信息，调制技术允许有效利用带宽并改善信号质量。随着对更快、更可靠通信的需求不断增长，‘调制载波’的作用将继续在未来通信系统的发展中发挥重要作用。