modulation coherence

简明释义

相干调制

英英释义

例句

1.Engineers often analyze modulation coherence to improve the performance of communication systems.

工程师通常分析调制相干性以提高通信系统的性能。

2.The study focused on the effects of environmental factors on modulation coherence in wireless networks.

该研究集中于环境因素对无线网络中调制相干性的影响。

3.The researchers measured the modulation coherence to determine how well the signals were synchronized.

研究人员测量了调制相干性以确定信号的同步程度。

4.A decrease in modulation coherence can lead to increased error rates in data transmission.

在数据传输中，调制相干性的降低可能导致错误率增加。

5.In telecommunications, high modulation coherence is essential for clear signal transmission.

在电信中，高调制相干性对于清晰的信号传输至关重要。

作文

In the realm of communication theory, the concept of modulation coherence plays a crucial role in ensuring the effective transmission of information. 调制相干性 refers to the degree to which the modulation of a signal maintains its integrity and consistency over time and space. This is particularly important in various applications, such as telecommunications, where signals must travel long distances without significant degradation. To understand modulation coherence, it is essential to first grasp what modulation means. Modulation is the process of varying one or more properties of a carrier signal, such as its amplitude, frequency, or phase, in order to encode information. For instance, in amplitude modulation (AM), the amplitude of the carrier wave is varied in accordance with the information signal. In frequency modulation (FM), it is the frequency that changes. The challenge arises when these modulated signals are transmitted through different mediums, which can introduce noise and distortions.The coherence of modulation refers to how well the modulated signal can be reconstructed at the receiver's end. High modulation coherence ensures that the original information can be accurately retrieved, while low coherence may result in misinterpretations or loss of data. This aspect becomes even more critical in environments with high interference or when signals are transmitted over long distances.One of the key factors influencing modulation coherence is the signal-to-noise ratio (SNR). A higher SNR indicates that the desired signal is much stronger than the background noise, leading to better coherence and clearer reception. Engineers often strive to enhance SNR through various techniques, such as using error correction codes or adaptive filtering, which can significantly improve the reliability of communication systems.Moreover, the choice of modulation technique can also impact modulation coherence. Some modulation schemes are inherently more robust against noise than others. For example, digital modulation techniques like Quadrature Amplitude Modulation (QAM) offer better performance in terms of coherence compared to traditional analog methods. As technology advances, researchers continue to explore new modulation strategies that maximize coherence while minimizing the effects of noise and distortion.In practical applications, maintaining modulation coherence is vital for ensuring the quality of service in various communication systems, including mobile networks, satellite communications, and broadcasting. For instance, in mobile networks, the ability to maintain coherence allows users to experience uninterrupted calls and high-quality data services. Similarly, in satellite communications, where signals may traverse vast distances, ensuring coherence is essential for clear and reliable communication.In conclusion, modulation coherence is a fundamental concept in communication theory that underpins the effectiveness of signal transmission. It encompasses the integrity and reliability of modulated signals, which are crucial for accurate information retrieval in various applications. As the demand for high-quality communication continues to grow, understanding and improving modulation coherence will remain a priority for engineers and researchers alike. The ongoing advancements in modulation techniques and noise reduction strategies will undoubtedly contribute to more robust and efficient communication systems in the future.

在通信理论领域，调制相干性这一概念在确保信息有效传输方面发挥着至关重要的作用。modulation coherence 指的是信号调制在时间和空间上保持其完整性和一致性的程度。这在各种应用中尤为重要，例如电信，信号必须在长距离内传输而不会显著退化。要理解调制相干性，首先需要掌握调制的含义。调制是指通过改变载波信号的一个或多个属性，例如其幅度、频率或相位，以编码信息的过程。例如，在幅度调制（AM）中，载波波的幅度根据信息信号变化。而在频率调制（FM）中，改变的是频率。当这些调制信号通过不同媒介传输时，挑战就出现了，这可能会引入噪声和失真。调制的相干性指的是调制信号在接收端能否被准确重建的程度。高的调制相干性保证了原始信息能够被准确检索，而低相干性可能导致误解或数据丢失。这一方面在干扰较高或信号需要长距离传输的环境中变得尤为关键。影响调制相干性的一个关键因素是信噪比（SNR）。较高的信噪比表明所需信号远强于背景噪声，从而导致更好的相干性和更清晰的接收。工程师们通常通过各种技术来提高信噪比，例如使用错误纠正码或自适应滤波，这可以显著提高通信系统的可靠性。此外，调制技术的选择也会影响调制相干性。某些调制方案在抗噪声方面固有地更加稳健。例如，像四相位幅度调制（QAM）这样的数字调制技术在相干性方面表现得比传统的模拟方法更好。随着技术的进步，研究人员继续探索新的调制策略，以最大限度地提高相干性，同时最小化噪声和失真的影响。在实际应用中，维持调制相干性对于确保各种通信系统的服务质量至关重要，包括移动网络、卫星通信和广播。例如，在移动网络中，维持相干性的能力使用户能够体验到不间断的通话和高质量的数据服务。类似地，在卫星通信中，由于信号可能经过广阔的距离，确保相干性对于清晰可靠的通信至关重要。总之，调制相干性是通信理论中的一个基本概念，它支撑着信号传输的有效性。它涵盖了调制信号的完整性和可靠性，这对于各种应用中信息的准确检索至关重要。随着对高质量通信需求的不断增长，理解和改善调制相干性将继续成为工程师和研究人员的优先事项。调制技术和噪声减少策略的持续进步无疑将为未来更强大和高效的通信系统做出贡献。