【作者】 张昀； 张志涌；

【Author】 ZHANG Yun,ZHANG Zhi-yong (College of Automation,Nanjing University of Posts & Telecommunications,Nanjing 210003,China)

【机构】 南京邮电大学 自动化学院；

【摘要】 提出了一个新的复数多电平离散Hopfield神经网络,构造了新的适用于复数多电平离散神经网的能量函数,分别在异步与同步更新模式下讨论了神经网的稳定性。为利用CMDHNN盲检测MQAM信号,用接收信号补投影算子构造了联结权阵,通过求解带整数约束的二次规划问题实现多电平复数信号盲检测。仿真试验表明:本算法所需接收数据较短,可实现计算目标,搜索空间缩小,系统性能得到提高。仿真结果也证明了系统真平衡点的稳定性推论。更多还原

【Abstract】 A new complex multi-valued discrete Hopfield neural network(CMDHNN) is proposed.A multi-valued discrete activation function and a new energy function for CMDHNN is constructed.The stability for multi-valued CMDHNN with asynchronous operating mode and synchronous operating mode is also analyzed.Furthermore,while the weighted matrix of CMDHNN is constructed by the complementary projection operator of received signals,the problem of quadratic optimization with integer constraints can successfully be solved by the CMDHNN.Simulation results show that the algorithm reaches the real equilibrium points with shorter received signals and the stability corollary of the equilibrium points is testified.更多还原