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在无线宽带通信的发展过程中,用户迅速增加的业务量及对覆盖的要求和用户可用有限频谱资源之间的矛盾日益突出。用户迫切希望提高系统的频谱利用率从而提供更大的容量,TDD双工方式正是解决这个矛盾的核心技术之一。本文从TDD原理入手,结合实际应用中的复杂度、使用成本等因素,重点介绍了TDD在McWiLL系统中的应用,并详细分析了它的优势和存在的问题。最后针对国内无线接入发展情况,得出结论在即将到来的下一代移动通信系统中,TDD必将得到广泛应用并发挥重要的作用。
In the course of the development of wireless broadband communication, the contradiction between the rapidly increasing amount of users and the requirement of coverage and the limited spectrum resources available to users has become increasingly prominent. Users are eager to improve the system spectrum utilization to provide greater capacity. TDD duplexing is one of the core technologies to solve this contradiction. Based on the principle of TDD, this paper introduces the application of TDD in McWiLL system based on the complexity and cost of practical application, and analyzes its advantages and problems in detail. Finally, according to the development of wireless access in China, it is concluded that in the upcoming next generation mobile communication system, TDD is bound to be widely used and plays an important role.