MIMO (Multiple-Input Multiple-Out-put) system is a core technology used in 802.11n which used multiple antennas to suppress fading. In the field of WSN network, routing protocols must be designed to minimize energy consumption for the nodes' energy supply is constrained. Using MIMO technique in WSN could make use of the energy accumulation in the receiving nodes to increase the receiver signal intensity, thus reducing bit error rate and improve the reliability of data communication. As the

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... based WSN could supply higher data transfer rate for the same transmitting power and bit error rate, it also efficiently reduces the time of the node sending data and improves communication performance of the whole network. In this paper, based on dynamic collaborative virtual antenna MIMO technology, a new energy efficient routing protocol is proposed. The simulation results indicate that our protocol can obviously reduce the energy consumption in the specific application environment.