MIMO technique can enhance the capacity of communication system. Virtual MIMO technique has been proposed because of the difficulty of multi-antenna deployment on mobile terminal while it is becoming more and more portable. Terminals with single antenna cooperate with each other to form Virtual Antenna Arrays, transmitting with multi-hop relay. This paper focuses on cooperative relay of Virtual MIMO system. Our contributions are listed as bellows.Firstly, this dissertation proposes a new cooperative relay mechanism based on double mode, decomposes cooperative relay mLacoste Shirtsechanism into two stages: VAA inter-cells communication and VAA intra-cell communication using different techniques. Translate the first stage of cooperative diversity into VAA inter-cells communication in one technique and translate the second stage of cooperative diversity into Cheap Lacoste Polo Shirts intra-cell communication in another technique based on the research of cooperative diversity. Compared to tradition cooperative relay using only one mode, under our new mechanism ralph lauren polo shirts inter-cells communication and chi hair straightener intra-cell communication can work at the same time seperately. As a chi flat iron result, we can design inter-cells clustering algorithm and intra-cell routing algorithm seperately,, so the protocols of cooperative relay mechanism is simplified and the delay is shorted.
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