Second, channel estimation algorithms of two-hop OFDM cooperative communication system with single relay are discussed, which are mainly based on block pilot.
其次，讨论了两跳单中继多载波协同通信系统的信道估计的问题，主要是基于辅助块状导频的方法；
MIMO system with decentralized two channel relay feedback is considered.
研究了带有双通道继电特性的多变量反馈控制系统。
MIMO system with decentralized two channel relay feedback is considered.
研究了带有双通道继电特性的多变量反馈控制系统。
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