on-off keying

简明释义

开关键控

英英释义

例句

1.In digital communication systems, on-off keying is often used to transmit binary data.

在数字通信系统中，开关调制 常用于传输二进制数据。

2.Radio frequency identification (RFID) systems sometimes utilize on-off keying for signal transmission.

射频识别（RFID）系统有时利用 开关调制 进行信号传输。

3.In optical communications, on-off keying can be used for sending light pulses.

在光通信中，可以使用 开关调制 发送光脉冲。

4.The simplicity of on-off keying makes it a popular choice for low-bandwidth applications.

由于 开关调制 的简单性，它成为低带宽应用的热门选择。

5.The Morse code is a classic example of on-off keying where dots and dashes represent different signals.

摩尔斯电码是一个经典的 开关调制 示例，其中点和划代表不同的信号。

作文

In the realm of telecommunications and signal processing, various techniques are employed to transmit information effectively. One such method is known as on-off keying, which is a form of amplitude modulation that simplifies the transmission of digital data. This technique is particularly useful in scenarios where bandwidth is limited or when a straightforward signaling method is required. The fundamental principle behind on-off keying is quite simple: it involves turning a signal on and off to represent binary data. For instance, a '1' might be represented by a signal being 'on', while a '0' could be indicated by the signal being 'off'.The application of on-off keying can be found in various communication systems, including infrared remote controls, wireless transmission, and even in some forms of radio communication. Its simplicity makes it an attractive choice for low-complexity systems. However, while on-off keying is easy to implement, it does have its limitations. For example, it is not very efficient in terms of power usage, especially in scenarios where the signal needs to be frequently turned on and off.Moreover, on-off keying is susceptible to noise and interference, which can lead to errors in data transmission. In environments with high levels of electromagnetic interference, the reliability of on-off keying may be compromised. Therefore, engineers and developers must consider these factors when designing communication systems that utilize this technique.Despite its drawbacks, on-off keying remains a foundational concept in digital communication. It serves as an introduction to more complex modulation techniques and helps students and professionals alike understand the basics of how digital signals can be manipulated for transmission. Furthermore, advancements in technology have led to improvements in error detection and correction methods, which can mitigate some of the issues associated with on-off keying.In conclusion, on-off keying is a vital technique in the field of telecommunications that offers a simple yet effective way to transmit binary data. While it has its limitations, understanding this method provides a crucial foundation for exploring more advanced communication techniques. As technology continues to evolve, the principles behind on-off keying will likely remain relevant, underscoring the importance of mastering this fundamental aspect of digital communication.

在电信和信号处理领域，采用各种技术来有效地传输信息。其中一种方法被称为开关调制，这是一种简化数字数据传输的幅度调制形式。这种技术在带宽有限或需要简单信号方法的情况下特别有用。开关调制的基本原理非常简单：它通过打开和关闭信号来表示二进制数据。例如，'1'可以通过信号为'开'来表示，而'0'则可以通过信号为'关'来表示。开关调制的应用可以在各种通信系统中找到，包括红外遥控器、无线传输甚至某些形式的无线电通信。由于其简单性，它成为低复杂度系统的吸引选择。然而，虽然开关调制易于实现，但它确实存在一些局限性。例如，在信号需要频繁打开和关闭的情况下，它在功率使用效率方面并不高。此外，开关调制对噪声和干扰非常敏感，这可能导致数据传输中的错误。在电磁干扰水平较高的环境中，开关调制的可靠性可能会受到影响。因此，工程师和开发人员在设计利用这种技术的通信系统时，必须考虑这些因素。尽管存在缺点，开关调制仍然是数字通信中的基础概念。它作为更复杂调制技术的入门，帮助学生和专业人士理解数字信号如何进行操作以便于传输。此外，技术的进步使得错误检测和纠正方法得到了改善，这可以缓解与开关调制相关的一些问题。总之，开关调制是电信领域中的一种重要技术，提供了一种简单而有效的方式来传输二进制数据。虽然它有其局限性，但理解这种方法为探索更先进的通信技术提供了关键基础。随着技术的不断发展，开关调制背后的原则可能仍将保持相关性，强调掌握这一数字通信基本方面的重要性。