研究了固定增益放大转发的双跳多输入和多输出(MIMO)无线传感器网络.为了降低发射和接收链路的复杂度,所有节点均利用了基于信噪比最大化的天线选择策略.提出了系统中断概率和平均误比特率的封闭表达式.理论分析了系统的分集阶数,并比较了计算机仿真和理论导出的结果,验证了固定增益放大转发在无线传感器网络中是一种可选的低复杂度的转发策略.%A dual-hop multiple-input and multiple-output(MIMO) wireless sensor networks of fixed-gain amplify-and-forward( AF) is studied. To reduce complexity of transmitting and receiving link, antenna selection strategy based on signal-to-noise ratio (SNR) maximize is employed at all nodes. New closed-form expressions for outage probability and average bit error rate( BER) are derived. The diversity order number of the system are analyzed theoretically. Results of computer simulations are compared with the theoretical derivation and it is confirmed that fixed-gain AF is an optional lower complexity strategy in wireless sensor networks.
展开▼
