多再生中继系统中基于多播线性收发机辅助的多流多播策略(英文)

Multicast-aware linear transceiver-aided multi-stream multicast scheme in multiple regenerative relay systems

针对多再生中继系统中容量受限于中继到目的端链路的场景,提出一种多播线性收发机辅助的多流多播策略来提高系统容量.策略中,利用数据共享中继的联合传输提高中继到目的端链路容量,并在源端到中继链路进行多流多播传输以实现数据到中继的有效分发.针对源端到中继的多流多播,还设计一种多流多播收发机,有效地处理多播数据流,并抑制不同数据流间的干扰.仿真结果验证了提出的策略在中继到目的链路质量较差时对系统容量的显著增益.

For multiple regenerative relay systems, we propose a multicast-aware linear transceiver- aided multi-stream multicast scheme to improve the system capacity when it is limited by relay-to- destination link. In this scheme, joint transmission of data-sharing relays is employed to improve the weak relay-to-destination link. To efficiently distribute the needed sharing data to relays, multi- stream multicasting is performed in source-to-relay link and we design a muhicast-aware linear transceiver which intelligently collects same streams and separates different streams. The simulation results show that system capacity is effectively enhanced, especially for weak relay-to-destination link.