In order to serve two-hop users, the relay station should be with the ability of processing and forwarding the signal from the transmitter to the receiver through the air interface. 中继站为了能够服务两跳用户,需要具备一定的处理和转发功能并通过空口资源与基站进行通信。
The main operation mode of relay are receiving and forwarding. Before analyzing the system, we should assume the working mode of the transmitter, the relay and the receiver first. Thirdly, research the MIMO system based on relay. 中继节点的工作方式主要是接收和转发,发送端、中继节点、接收端的工作方式都应在进行系统分析时进行假设。(3)基于中继转发的MIMO系统研究。
Secondly, this paper does research on the performance of Relay access link receiver, and simulates and obtains the key performance indicator of the receiver such as reference sensitivity and dynamic range. 其次,对Relayaccesslink接收机性能进行了研究,通过仿真获得了其参考灵敏度、阻塞特性、动态范围等接收机性能指标。
The novel cooperative communication scenario takes both the direct link and relay link of secondary user into consideration for data transmission. Then the receiver of secondary user merges the signals from the two links to obtain diversity gain and improve system performance. 新的协作通信场景是指同时利用次级用户的直接链路和中继链路来协同传输数据,次级用户的接收端通过对两条链路的信号进行合并处理,从而获得分集增益,提升系统的性能。