WiMAX中的Relay技术及其传输模式的自适应

With the development of users for high data rate and high quality of services in wireless network, people pursue high qualification services and Qos. The concept of diversity is proposed to combat the affections of multi-path fading. Relay can enhance the data rate and improve the quality of services without high costs, it also can realize space diversity and enhance the qualification of the signal. Relay has become a hot search point in wireless network. This paper aims at relay technology in WiMAX networks , analyze the application of mode selection technology and their advantages and disadvantages.