suppressed-carrier double side band

简明释义

抑制载波的双边带

英英释义

例句

1.The radio station uses suppressed-carrier double side band technology to enhance sound quality.

该广播电台使用抑制载波双边带技术来增强音质。

2.In amateur radio, suppressed-carrier double side band is preferred for its efficiency in bandwidth usage.

在业余无线电中，抑制载波双边带因其在带宽使用上的高效而受到青睐。

3.The suppressed-carrier double side band modulation allows for clearer transmissions over long distances.

抑制载波双边带调制允许在长距离传输中实现更清晰的通信。

4.The suppressed-carrier double side band technique is essential for effective satellite communication.

抑制载波双边带技术对于有效的卫星通信至关重要。

5.Engineers often choose suppressed-carrier double side band for its reduced power consumption.

工程师们常常选择抑制载波双边带，因为它减少了功耗。

作文

In the realm of telecommunications, various modulation techniques are employed to transmit information efficiently over long distances. One such technique is known as suppressed-carrier double side band. This method is particularly significant in the field of amplitude modulation (AM), where it enhances the quality of the transmitted signal while minimizing unnecessary bandwidth usage.To understand the concept of suppressed-carrier double side band (SC-DSB), we first need to grasp the basic principles of amplitude modulation. In traditional AM, a carrier wave is modulated by the information signal, resulting in a waveform that contains both upper and lower sidebands, along with the carrier frequency itself. The carrier frequency is essential for demodulation at the receiver's end; however, it consumes a considerable amount of power and bandwidth.The suppressed-carrier double side band technique addresses these inefficiencies by eliminating the carrier wave from the transmitted signal. Instead of transmitting the carrier, only the two sidebands—the upper and lower—are sent. This approach not only reduces the power required for transmission but also allows for more efficient use of the available bandwidth, which is crucial in crowded frequency bands.One of the primary advantages of using suppressed-carrier double side band is improved power efficiency. Since the carrier does not need to be transmitted, more power can be allocated to the sidebands, which carry the actual information. This results in a stronger signal at the receiver, leading to better audio quality in applications such as radio broadcasting.Moreover, suppressed-carrier double side band modulation is less susceptible to noise and interference, which is a common issue in communication systems. By focusing on the sidebands, the system can maintain a clearer signal even in less-than-ideal conditions. This characteristic makes SC-DSB an attractive option for long-distance communication, where signal degradation is a significant concern.However, the implementation of suppressed-carrier double side band does come with its challenges. The absence of a carrier means that the receiver must have a stable reference frequency to accurately demodulate the received signal. This requirement can complicate the design of the receiver circuitry and may necessitate additional components to ensure proper synchronization.In summary, the suppressed-carrier double side band technique represents an innovative approach in the field of amplitude modulation, offering several benefits, including enhanced power efficiency and improved signal clarity. While it presents certain challenges in terms of receiver design, the advantages it provides make it a valuable tool in modern telecommunications. As technology continues to advance, understanding and utilizing methods like SC-DSB will be crucial for developing efficient communication systems that can meet the ever-growing demand for bandwidth and high-quality signal transmission.

在电信领域，各种调制技术被用于高效地在长距离上传输信息。其中一种技术被称为抑制载波双边带。这种方法在幅度调制（AM）领域尤为重要，它提高了传输信号的质量，同时最小化了不必要的带宽使用。要理解抑制载波双边带（SC-DSB）的概念，我们首先需要掌握幅度调制的基本原理。在传统的AM中，载波波形被信息信号调制，产生一个包含上下边带和载波频率的波形。载波频率对于接收端的解调至关重要；然而，它消耗了相当多的功率和带宽。抑制载波双边带技术通过从传输信号中消除载波波形来解决这些低效问题。与其传输载波，不如只发送两个边带——上边带和下边带。这种方法不仅减少了传输所需的功率，还允许更有效地利用可用带宽，这在拥挤的频率带中至关重要。使用抑制载波双边带的主要优点之一是提高了功率效率。由于不需要传输载波，更多的功率可以分配给边带，而边带则携带实际信息。这导致接收端信号更强，从而在广播等应用中提供更好的音频质量。此外，抑制载波双边带调制对噪声和干扰的抵抗力较强，这是通信系统中的常见问题。通过专注于边带，系统可以在不理想条件下保持更清晰的信号。这一特性使得SC-DSB成为长距离通信的一个吸引人的选择，因为信号衰减是一个重大问题。然而，实施抑制载波双边带也面临一些挑战。缺乏载波意味着接收端必须具有稳定的参考频率，以准确解调接收到的信号。这一要求可能会使接收器电路的设计变得复杂，并可能需要额外的组件以确保适当的同步。总之，抑制载波双边带技术代表了幅度调制领域的一种创新方法，提供了一些好处，包括提高的功率效率和改善的信号清晰度。尽管在接收器设计方面存在某些挑战，但它所提供的优势使其成为现代电信中一种有价值的工具。随着技术的不断进步，理解和利用像SC-DSB这样的技术将对开发能够满足日益增长的带宽需求和高质量信号传输的高效通信系统至关重要。