quadrature modulation

简明释义

正交灯

英英释义

例句

1.The implementation of quadrature modulation 正交调制 can significantly reduce the effects of noise in a communication system.

实施正交调制可以显著减少通信系统中的噪声影响。

2.Engineers often utilize quadrature modulation 正交调制 in satellite communications to maximize bandwidth.

工程师们常常在卫星通信中利用正交调制来最大化带宽。

3.In modern wireless communication systems, quadrature modulation 正交调制 techniques are widely used to improve data transmission efficiency.

在现代无线通信系统中，正交调制技术被广泛应用于提高数据传输效率。

4.The use of quadrature modulation 正交调制 allows for the simultaneous transmission of two signals over the same channel.

使用正交调制可以在同一信道上同时传输两个信号。

5.Digital television broadcasting relies heavily on quadrature modulation 正交调制 to transmit high-quality video and audio signals.

数字电视广播在很大程度上依赖于正交调制来传输高质量的视频和音频信号。

作文

In the world of telecommunications, various techniques are employed to transmit information over radio waves. One such technique that has gained significant importance is quadrature modulation. This method allows for efficient use of bandwidth while maintaining high data rates, making it particularly valuable in modern communication systems.Quadrature modulation refers to a family of modulation schemes that use two carrier waves, which are out of phase by 90 degrees (hence the term 'quadrature'). This phase difference enables the transmission of two separate signals simultaneously, effectively doubling the amount of information that can be sent over the same bandwidth. The most common forms of quadrature modulation include Quadrature Amplitude Modulation (QAM) and Phase Shift Keying (PSK).One of the key advantages of quadrature modulation is its ability to combine amplitude and phase variations to encode data. For instance, in QAM, both the amplitude of the carrier signal and its phase are varied to represent different symbols. This allows for a high number of distinct states, which translates to increased data throughput. In practical terms, this means that more information can be transmitted in a shorter amount of time, which is crucial for applications like video streaming and online gaming where speed and efficiency are paramount.Moreover, quadrature modulation is robust against noise and interference, which are common challenges in wireless communication. By utilizing multiple carriers and varying their phases and amplitudes, the technique can maintain signal integrity even in less-than-ideal conditions. This resilience is essential for ensuring reliable communication, especially in urban environments where signal degradation can occur due to buildings and other obstacles.The implementation of quadrature modulation has revolutionized digital communication systems. It forms the backbone of many standards, including those used in Wi-Fi, cellular networks, and satellite communications. For example, the 4G LTE network employs QAM to achieve high-speed data transmission, allowing users to enjoy seamless internet connectivity on their mobile devices.As technology continues to advance, the role of quadrature modulation is likely to expand further. With the advent of 5G networks and the Internet of Things (IoT), the demand for faster and more efficient communication methods will only increase. Engineers and researchers are constantly exploring new variations and enhancements of quadrature modulation to meet these evolving needs.In conclusion, quadrature modulation is a critical technique in the field of telecommunications that facilitates high-speed data transmission while optimizing bandwidth usage. Its ability to transmit multiple signals simultaneously through phase and amplitude manipulation sets it apart from traditional modulation methods. As we move towards a more connected future, understanding and leveraging quadrature modulation will be essential for developing the next generation of communication technologies.

在电信领域，各种技术被用于通过无线电波传输信息。其中一种获得显著重要性的技术是正交调制。这种方法允许高效利用带宽，同时保持高速数据传输，这使其在现代通信系统中尤其有价值。正交调制指的是一系列调制方案，这些方案使用两个相位相差90度的载波（因此称为“正交”）。这种相位差使得能够同时传输两个独立的信号，有效地将可以在同一带宽上传输的信息量翻倍。正交调制最常见的形式包括正交振幅调制（QAM）和相位移键控（PSK）。正交调制的一个关键优势是其结合幅度和相位变化来编码数据的能力。例如，在QAM中，载波信号的幅度和相位都被改变以表示不同的符号。这允许较高数量的不同状态，这转化为增加的数据吞吐量。在实际应用中，这意味着可以在更短的时间内传输更多的信息，这对于视频流和在线游戏等应用至关重要，因为这些应用需要速度和效率。此外，正交调制对噪声和干扰具有良好的抗性，而这些都是无线通信中的常见挑战。通过利用多个载波并改变它们的相位和幅度，这种技术能够在不理想条件下保持信号的完整性。这种韧性对于确保可靠的通信至关重要，尤其是在城市环境中，由于建筑物和其他障碍物，信号可能会退化。正交调制的实施彻底改变了数字通信系统。它构成了许多标准的基础，包括Wi-Fi、蜂窝网络和卫星通信中使用的标准。例如，4G LTE网络采用QAM实现高速数据传输，使用户能够在移动设备上享受无缝的互联网连接。随着技术的不断进步，正交调制的作用可能会进一步扩大。随着5G网络和物联网（IoT）的出现，对更快和更高效的通信方法的需求只会增加。工程师和研究人员不断探索新的变体和增强型正交调制，以满足这些不断发展的需求。总之，正交调制是电信领域的一项关键技术，它促进了高速数据传输，同时优化了带宽使用。通过相位和幅度操作同时传输多个信号的能力使其与传统调制方法区别开来。随着我们迈向更加互联的未来，理解和利用正交调制将对开发下一代通信技术至关重要。