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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.
Aiming at the scenario that the capacity in relay regenerative relay system is limited to the relay link to the destination end, a multi-stream multicast transceiver-assisted multi-stream multicast strategy is proposed to improve the system capacity.In the strategy, The joint transmission increases the capacity of the relay to the destination link, and performs multi-stream multicast transmission on the source-to-trunk link for efficient data-to-relay distribution.For multi-stream multicast from source to relay, A multi-stream multicast transceiver is designed to effectively process multicast data streams and restrain the interference among different data streams.The simulation results show that the proposed strategy has a significant impact on the system capacity when the quality of the link from the relay to the destination is poor Gain.