多输入多输出(MIMO)技术可以为系统提供空间复用增益和空间分集增益。
Spatial multiplexing and space diversity gain of a system can be extracted through MIMO technique.
文章针对多输入多输出（MIMO）系统在移动终端实现上的限制，提出分布式天线系统（DAS）的解决方案来获得空间分集增益。
Due to the limitation of mobile terminal implementation in MIMO systems, Distributed Antenna System (DAS) is proposed to provide space diversity gain.
由于中继节点的参与，该协议可充分利用多用户协作的空间分集和出错重传所带来的时间分集和编码增益。
As the relay node's involvement, the agreement can take full advantage of multi-user cooperative spatial diversity and the time diversity and coding gain from retransmission mechanism.
该方案的主要特征是，认知中继使用的协作机制结合了协作传输和协作中继，可以获得空间分集和频谱分集增益。
The key feature of the proposed scheme is that, the cognitive relay combines cooperative transmission and cooperative relay, as a result, both spatial diversity and spectrum diversity can be obtained.
该方案的主要特征是，认知中继使用的协作机制结合了协作传输和协作中继，可以获得空间分集和频谱分集增益。
The key feature of the proposed scheme is that, the cognitive relay combines cooperative transmission and cooperative relay, as a result, both spatial diversity and spectrum diversity can be obtained.
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