carrier wave

简明释义

载波

英英释义

例句

1.The carrier wave (载波) in a wireless network helps in carrying data packets from one device to another.

无线网络中的载波帮助将数据包从一个设备传输到另一个设备。

2.The frequency of the carrier wave (载波) determines the range and quality of the signal.

载波的频率决定了信号的范围和质量。

3.Modulation techniques are used to alter the properties of the carrier wave (载波) for effective communication.

调制技术用于改变载波的特性，以实现有效的通信。

4.In radio broadcasting, the audio signal is superimposed onto a carrier wave (载波) to transmit sound over long distances.

在广播中，音频信号叠加在一个载波上，以便将声音传输到远距离。

5.In fiber optic communication, light acts as a carrier wave (载波) to transmit information.

在光纤通信中，光作为载波来传输信息。

作文

In the world of telecommunications and signal processing, the concept of a carrier wave plays a crucial role in the transmission of information. A carrier wave is essentially a waveform that is used to transport data over a distance. This waveform is modulated in various ways to encode the information that needs to be sent, allowing for efficient communication between devices. Understanding how a carrier wave functions is fundamental to grasping the principles of modern communication technologies.The basic principle behind a carrier wave is relatively straightforward. Imagine a radio station broadcasting music. The music itself is made up of sound waves, which can be difficult to transmit over long distances. To overcome this challenge, the station uses a carrier wave—a high-frequency electromagnetic wave—to carry the music signal. By modulating the amplitude, frequency, or phase of the carrier wave, the original audio signal can be encoded onto it. This process allows the sound waves to travel much further than they would on their own.There are several types of modulation techniques used with carrier waves, including amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). Each technique has its advantages and disadvantages, depending on the application. For instance, AM is simpler and requires less bandwidth, but it is more susceptible to noise and interference. On the other hand, FM provides better sound quality and is less affected by noise, making it a preferred choice for music broadcasts.The importance of carrier waves extends beyond radio transmissions. In modern digital communications, such as Wi-Fi and cellular networks, carrier waves are essential for transmitting data. Digital signals are often converted into analog signals that can be transmitted over these carrier waves. This conversion process involves complex algorithms and techniques, enabling high-speed internet connections and seamless communication across devices.Moreover, the concept of carrier waves is not limited to audio signals; it applies to video, data, and even satellite communications. For example, in satellite television, the broadcast signal is sent to a satellite, which then transmits it back down to Earth using a carrier wave. The signal is received by a satellite dish, which demodulates the carrier wave to retrieve the original video and audio content.As technology continues to advance, the methods used to manipulate carrier waves are becoming more sophisticated. Techniques such as orthogonal frequency-division multiplexing (OFDM) utilize multiple carrier waves simultaneously to improve data rates and efficiency. This innovation is particularly important in the development of 4G and 5G networks, which promise faster and more reliable mobile communications.In conclusion, the significance of the carrier wave in communication cannot be overstated. It serves as the backbone of various forms of media transmission, ensuring that we can connect and share information across vast distances. As we move towards an increasingly interconnected world, understanding the role of carrier waves will be essential for anyone interested in the fields of telecommunications, engineering, and information technology. The evolution of these technologies will continue to shape our lives, making the study of carrier waves a vital area of focus for future innovations.

在电信和信号处理的世界中，载波的概念在信息传输中发挥着至关重要的作用。载波本质上是一种波形，用于远距离传输数据。通过各种方式对该波形进行调制，可以编码需要发送的信息，从而实现设备之间的高效通信。理解载波的功能是掌握现代通信技术原理的基础。载波的基本原理相对简单。想象一下，一个广播电台正在播放音乐。音乐本身由声波组成，这些声波在长距离传输时可能会遇到困难。为了克服这个挑战，电台使用载波——一种高频电磁波——来承载音乐信号。通过调制载波的幅度、频率或相位，可以将原始音频信号编码到其上。这一过程使得声波能够比单独传播时走得更远。有几种调制技术与载波一起使用，包括幅度调制（AM）、频率调制（FM）和相位调制（PM）。每种技术都有其优缺点，具体取决于应用。例如，AM较为简单，所需带宽较小，但更容易受到噪声和干扰的影响。另一方面，FM提供更好的音质，并且不易受噪声影响，因此成为音乐广播的首选。载波的重要性不仅限于无线电传输。在现代数字通信中，例如Wi-Fi和蜂窝网络，载波对于数据传输至关重要。数字信号通常被转换为可以通过这些载波传输的模拟信号。这一转换过程涉及复杂的算法和技术，使得高速互联网连接和设备之间的无缝通信成为可能。此外，载波的概念不仅限于音频信号；它适用于视频、数据甚至卫星通信。例如，在卫星电视中，广播信号被发送到卫星，卫星再通过载波将其传回地球。信号被卫星天线接收，天线解调载波以检索原始的视频和音频内容。随着技术的不断进步，操纵载波的方法变得越来越复杂。正交频分复用（OFDM）等技术同时利用多个载波来提高数据速率和效率。这一创新在4G和5G网络的发展中尤为重要，这些网络承诺提供更快、更可靠的移动通信。总之，载波在通信中的重要性不容小觑。它作为各种媒体传输的支柱，确保我们能够在广阔的距离上连接和共享信息。随着我们朝着一个日益互联的世界迈进，理解载波的角色对于任何对电信、工程和信息技术领域感兴趣的人来说都将是必不可少的。这些技术的演变将继续塑造我们的生活，使得对载波的研究成为未来创新的关键关注领域。