adjacent channel noise

简明释义

邻近信道噪声

英英释义

例句

1.The radio signal was disrupted due to adjacent channel noise 邻道噪声, making it hard to hear the broadcast clearly.

由于邻道噪声，收音机信号受到干扰，导致广播声音难以清晰听到。

2.Engineers are working on reducing adjacent channel noise 邻道噪声 in telecommunications to improve call quality.

工程师们正在努力减少电信中的邻道噪声以提高通话质量。

3.The new filter design effectively minimizes adjacent channel noise 邻道噪声 in the audio system.

新的滤波器设计有效地最小化了音频系统中的邻道噪声。

4.To enhance the performance of the device, we need to address the issue of adjacent channel noise 邻道噪声.

为了提高设备的性能，我们需要解决邻道噪声的问题。

5.During the test, we noticed that adjacent channel noise 邻道噪声 interfered with the data transmission.

在测试过程中，我们注意到邻道噪声干扰了数据传输。

作文

In the realm of telecommunications and signal processing, the term adjacent channel noise refers to the interference that occurs when signals from neighboring channels overlap or bleed into each other. This phenomenon is particularly significant in wireless communication systems, where multiple channels are utilized within a limited frequency spectrum. The presence of adjacent channel noise can severely degrade the quality of a received signal, leading to errors in data transmission and a reduction in overall system performance.To better understand the implications of adjacent channel noise, it is essential to explore how communication systems operate. In a typical radio frequency (RF) environment, various channels are allocated for different communication purposes. Each channel is designed to operate at a specific frequency, allowing users to transmit and receive information without interference. However, due to the physical properties of radio waves and the limitations of filtering technologies, signals from adjacent channels can inadvertently interfere with one another.This interference manifests as adjacent channel noise, which can be caused by several factors. For instance, if a transmitter operates at a frequency close to another channel, its signal may extend beyond its designated bandwidth, causing leakage into the adjacent channel. Additionally, poor receiver design or inadequate filtering can exacerbate the effects of adjacent channel noise, making it challenging to isolate the desired signal from the unwanted interference.The impact of adjacent channel noise on communication systems is profound. In digital communications, where data is transmitted in discrete packets, even a small amount of noise can lead to packet loss or corruption. This necessitates the implementation of error correction techniques, which can add complexity and reduce the overall efficiency of the system. Furthermore, users may experience dropped calls, reduced data speeds, or poor audio quality during voice transmissions, all of which can be attributed to adjacent channel noise.To mitigate the effects of adjacent channel noise, engineers employ various strategies. One common approach is to use advanced filtering techniques that help to isolate the desired signal from nearby interference. This may involve the use of bandpass filters, which allow only signals within a specific frequency range to pass through while attenuating those outside this range. Additionally, frequency planning and channel allocation strategies can be implemented to minimize the likelihood of adjacent channel interference. By ensuring that channels are spaced adequately apart in the frequency spectrum, the potential for adjacent channel noise can be significantly reduced.Moreover, modern communication systems are increasingly adopting digital modulation techniques that are inherently more resistant to noise. For example, spread spectrum technologies, such as frequency hopping and direct sequence spread spectrum, can help to distribute the signal across a wider bandwidth, making it less susceptible to adjacent channel noise.In conclusion, understanding adjacent channel noise is crucial for anyone involved in the field of telecommunications. As the demand for wireless communication continues to grow, addressing the challenges posed by adjacent channel noise will be vital to ensuring reliable and efficient communication systems. By employing effective mitigation strategies and embracing advancements in technology, we can enhance the performance of our communication networks and provide users with a seamless experience.

在电信和信号处理领域，术语邻近信道噪声指的是当相邻信道的信号重叠或互相干扰时所发生的干扰现象。这种现象在无线通信系统中尤为重要，因为在有限的频谱内使用多个信道。邻近信道噪声的存在可能严重降低接收信号的质量，导致数据传输中的错误以及整体系统性能的下降。为了更好地理解邻近信道噪声的影响，有必要探讨通信系统的运作方式。在典型的射频（RF）环境中，各种信道被分配用于不同的通信目的。每个信道都设计为在特定频率下运行，使用户能够在不干扰的情况下传输和接收信息。然而，由于无线电波的物理特性和过滤技术的局限性，相邻信道的信号可能会意外干扰彼此。这种干扰表现为邻近信道噪声，可能由几种因素引起。例如，如果一个发射器在接近另一个信道的频率上工作，其信号可能超出其指定带宽，导致泄漏到相邻信道。此外，接收器设计不良或过滤不足可能会加剧邻近信道噪声的影响，使得从不需要的干扰中分离出所需信号变得具有挑战性。邻近信道噪声对通信系统的影响深远。在数字通信中，数据以离散数据包的形式传输，即使是少量噪声也可能导致数据包丢失或损坏。这需要实施错误校正技术，这可能增加复杂性并降低系统的整体效率。此外，用户可能会经历通话中断、数据速度降低或语音传输音质差等问题，这些都可以归因于邻近信道噪声。为了减轻邻近信道噪声的影响，工程师采用各种策略。一种常见的方法是使用先进的过滤技术，帮助将所需信号与附近的干扰隔离。这可能涉及使用带通滤波器，仅允许特定频率范围内的信号通过，同时衰减超出该范围的信号。此外，可以实施频率规划和信道分配策略，以最小化相邻信道干扰的可能性。通过确保信道在频谱中适当分开，可以显著减少邻近信道噪声的潜在性。此外，现代通信系统越来越多地采用本质上对噪声更具抗性的数字调制技术。例如，扩频技术，如频率跳变和直接序列扩频，可以帮助将信号分布在更宽的带宽上，从而使其对邻近信道噪声的敏感度降低。总之，了解邻近信道噪声对于任何参与电信领域的人来说都是至关重要的。随着无线通信需求的不断增长，解决邻近信道噪声所带来的挑战对于确保可靠和高效的通信系统至关重要。通过采用有效的缓解策略和拥抱技术进步，我们可以提高通信网络的性能，为用户提供无缝的体验。