code division multiple access

简明释义

分码多址访问

英英释义

例句

1.With code division multiple access, multiple users can share the same frequency without interference.

通过码分多址，多个用户可以在没有干扰的情况下共享相同的频率。

2.The smartphone supports code division multiple access for better call quality.

这款智能手机支持码分多址以提供更好的通话质量。

3.In a crowded area, code division multiple access helps maintain reliable communication.

在拥挤的区域，码分多址有助于维持可靠的通信。

4.The telecommunications company implemented code division multiple access to improve network efficiency.

这家电信公司实施了码分多址以提高网络效率。

5.Using code division multiple access technology, the network can handle more simultaneous connections.

使用码分多址技术，网络可以处理更多的同时连接。

作文

In the modern world, where communication technology plays a pivotal role in our daily lives, understanding various communication methods is essential. One such method is code division multiple access, commonly referred to as CDMA. This technology is widely used in mobile communications, enabling multiple users to share the same frequency channel without interference. By using unique codes for each user, CDMA allows for efficient and effective communication. The significance of code division multiple access lies in its ability to enhance the capacity of wireless networks, providing better service quality and higher data rates.To comprehend how code division multiple access works, it is crucial to understand the concept of spreading codes. Each user is assigned a unique code that spreads their signal over a wide bandwidth. This process not only minimizes interference but also maximizes the number of users that can simultaneously transmit information. As a result, CDMA systems can support many users within the same frequency band, making it an efficient choice for mobile network operators.The advantages of code division multiple access extend beyond just increased capacity. For instance, it provides enhanced security features since the unique codes make it difficult for unauthorized users to intercept signals. Additionally, CDMA systems are more resilient to multipath interference, which occurs when signals bounce off buildings or other obstacles, causing delays and distortion. This resilience leads to improved call quality and fewer dropped calls, which are critical factors in user satisfaction.Furthermore, code division multiple access is not limited to voice communication; it also supports various data services. With the rise of smartphones and mobile internet usage, the need for high-speed data transmission has become paramount. CDMA technology has evolved to accommodate these demands, allowing users to stream videos, download files, and engage in online gaming seamlessly.Despite its numerous advantages, code division multiple access faces competition from other technologies, such as Time Division Multiple Access (TDMA) and Frequency Division Multiple Access (FDMA). Each of these methods has its own strengths and weaknesses, and the choice of technology often depends on specific use cases and network requirements. However, CDMA remains a popular choice for many mobile carriers due to its efficiency and reliability.In conclusion, code division multiple access has revolutionized the way we communicate in the digital age. Its unique approach to managing multiple users on the same channel has made it a cornerstone of modern telecommunications. As technology continues to advance, understanding methods like CDMA will be vital for anyone interested in the field of communications. The future of wireless communication will undoubtedly build upon the foundations laid by code division multiple access, ensuring that we remain connected in an increasingly digital world.

在现代社会中，通信技术在我们的日常生活中发挥着关键作用，因此理解各种通信方法至关重要。其中一种方法是码分多址，通常简称为CDMA。该技术广泛应用于移动通信，使多个用户能够在没有干扰的情况下共享同一频率信道。通过为每个用户使用唯一的代码，CDMA实现了高效和有效的通信。码分多址的重要性在于它能够提高无线网络的容量，提供更好的服务质量和更高的数据传输速率。要理解码分多址的工作原理，首先必须了解扩频码的概念。每个用户被分配一个唯一的代码，该代码将其信号扩展到宽带宽。这一过程不仅最小化了干扰，还最大化了可以同时传输信息的用户数量。因此，CDMA系统能够在同一频率带宽内支持许多用户，使其成为移动网络运营商的高效选择。码分多址的优势不仅限于容量增加。例如，它提供了增强的安全性，因为唯一的代码使得未经授权的用户很难拦截信号。此外，CDMA系统对多径干扰的抵抗力更强，多径干扰是指信号在建筑物或其他障碍物上反弹，导致延迟和失真。这种抗干扰能力提高了通话质量，减少了掉线，这些都是用户满意度的关键因素。此外，码分多址不仅限于语音通信；它还支持各种数据服务。随着智能手机和移动互联网使用的增加，对高速数据传输的需求变得至关重要。CDMA技术已经发展以满足这些需求，使用户能够无缝地流媒体视频、下载文件和参与在线游戏。尽管有许多优势，码分多址仍面临来自其他技术的竞争，如时分多址（TDMA）和频分多址（FDMA）。每种方法都有自己的优缺点，技术选择往往取决于特定的使用案例和网络需求。然而，由于其效率和可靠性，CDMA仍然是许多移动运营商的热门选择。总之，码分多址彻底改变了我们在数字时代的沟通方式。它在同一信道上管理多个用户的独特方法使其成为现代电信的基石。随着技术的不断进步，理解像CDMA这样的技术对于任何对通信领域感兴趣的人来说都至关重要。无线通信的未来无疑将建立在码分多址奠定的基础之上，确保我们在日益数字化的世界中保持连接。