phase modulation

简明释义

相位调制

英英释义

例句

1.The phase modulation technique allows for more efficient use of bandwidth compared to amplitude modulation.

与幅度调制相比，相位调制技术允许更有效地利用带宽。

2.In radio transmission, phase modulation can help reduce interference.

在无线电传输中，相位调制可以帮助减少干扰。

3.A common application of phase modulation is in satellite communication.

一个常见的相位调制应用是在卫星通信中。

4.Modern digital communication systems often implement phase modulation for better performance.

现代数字通信系统通常实现相位调制以获得更好的性能。

5.In telecommunications, phase modulation is widely used to encode information in a signal.

在电信中，相位调制被广泛用于在信号中编码信息。

作文

Phase modulation, often abbreviated as PM, is a technique used in electronic communication systems to encode information in the phase of a carrier wave. This method of modulation is particularly significant in modern telecommunications, where the efficiency and integrity of signal transmission are paramount. By varying the phase of the carrier signal, information can be transmitted without altering the amplitude or frequency, making it less susceptible to noise and interference. To understand phase modulation (相位调制), one must first grasp the basic principles of modulation itself. Modulation is the process of varying a carrier signal in order to transmit data. In traditional amplitude modulation (AM) and frequency modulation (FM), the amplitude or frequency of the carrier wave is altered according to the information being sent. However, phase modulation introduces a different approach by changing the phase of the wave. This allows for more efficient use of bandwidth and can improve the overall performance of communication systems.The implementation of phase modulation can be observed in various technologies, including digital communications, satellite transmissions, and even in some forms of radio broadcasting. One of the most common applications of phase modulation is in the field of digital signal processing. Here, data is encoded into a series of phase shifts, which are then decoded at the receiving end. This method is particularly effective in environments with high levels of noise, as the phase of a signal can remain relatively stable compared to its amplitude.Moreover, phase modulation is closely related to a technique known as Quadrature Amplitude Modulation (QAM), which combines both amplitude and phase variations to encode data. QAM is widely used in broadband data communications and is a key technology behind many modern internet services. The interplay between phase and amplitude in these systems highlights the versatility and importance of phase modulation in achieving high data rates and reliable connections.Another important aspect of phase modulation is its role in the development of advanced modulation schemes, such as those used in 5G networks. As the demand for faster and more reliable wireless communication continues to grow, understanding and utilizing phase modulation becomes increasingly critical. It allows for the transmission of larger amounts of data over limited bandwidth, which is essential for supporting the myriad of devices connected to the internet today.In conclusion, phase modulation (相位调制) is a fundamental concept in the field of telecommunications that enables efficient and reliable data transmission. Its unique ability to encode information by varying the phase of a carrier signal sets it apart from other modulation techniques and makes it an essential tool in modern communication systems. As technology continues to evolve, the significance of phase modulation will likely only increase, paving the way for innovations in how we connect and communicate in our increasingly digital world.

相位调制（Phase modulation，PM）是一种用于电子通信系统的技术，通过载波波形的相位编码信息。这种调制方法在现代电信中尤为重要，因为信号传输的效率和完整性至关重要。通过改变载波信号的相位，可以在不改变幅度或频率的情况下传输信息，从而使其更不易受到噪声和干扰。要理解phase modulation（相位调制），首先必须掌握调制的基本原理。调制是指根据所发送的数据变化载波信号的过程。在传统的幅度调制（AM）和频率调制（FM）中，载波波形的幅度或频率会根据要发送的信息进行改变。然而，phase modulation引入了一种不同的方法，通过改变波的相位来传递信息。这允许更有效地使用带宽，并可以提高通信系统的整体性能。phase modulation的实施可以在各种技术中观察到，包括数字通信、卫星传输，甚至某些形式的广播。在数字信号处理领域，phase modulation是最常见的应用之一。在这里，数据被编码为一系列相位变化，然后在接收端解码。这种方法在噪声水平较高的环境中特别有效，因为信号的相位相比于幅度可以保持相对稳定。此外，phase modulation与一种称为正交振幅调制（QAM）的技术密切相关，该技术结合了幅度和相位变化来编码数据。QAM广泛应用于宽带数据通信，是许多现代互联网服务背后的关键技术。这些系统中相位和幅度之间的相互作用突显了phase modulation在实现高速数据传输和可靠连接方面的重要性。phase modulation的另一个重要方面是它在先进调制方案开发中的作用，例如在5G网络中。随着对更快、更可靠无线通信的需求不断增长，理解和利用phase modulation变得越来越关键。它允许在有限带宽上传输更多的数据，这对于支持今天连接到互联网的大量设备至关重要。总之，phase modulation（相位调制）是电信领域的一个基本概念，它使得高效和可靠的数据传输成为可能。通过改变载波信号的相位来编码信息的独特能力使其区别于其他调制技术，并使其成为现代通信系统的重要工具。随着技术的不断发展，phase modulation的重要性可能只会增加，为我们在日益数字化的世界中连接和沟通的创新铺平道路。