一种无线传感器网络虚拟MIMO传输策略

Since wireless sensor networks with limited energy，the transmission scheme must be energy efficient in order to prolong the lifetime of network． Virtual MIMO scheme is a promising solution to this problem. In this paper, we design an energy-efficient Chain based single-hop transmission scheme using virtual MIMO techniques. An optimization model is proposed to find the optimum number of cooperative nodes and chains. Simulation results prove that tremendous energy saving is possible with judicious choice of designed protocol parameters even considering the circuit energy cost and STBC training overhead. And the scheme is much better than PEGASIS in lifetime and latency.