无线多跳网络信道分配优化算法研究

Research on Channel Allocation Optimization Algorithm for Wireless Multi-hop Networks

无线多跳网络信道受到码间干扰容易产生信道分配失衡,为了提高无线多跳网络信道均衡性,提出基于判决反馈均衡的无线多跳网络信道分配优化算法,构建无线多跳网络信道模型,采用判决反馈均衡器进行无线多跳网络信道分配过程中的干扰抑制和多径补偿,根据信道多径扩展覆盖的码元数进行网络信道分配过程中的前馈滤波调制,利用直接序列扩频方法进行无线多跳网络信道的线性均衡配置,采用自适应的梯度学习算法实现信道分配均衡设计,基于判决反馈均衡技术实现无线多跳网络信道分配优化。仿真结果表明,采用该方法进行无线多跳网络信道分配的均衡性较好,抗多径干扰能力较强,提高了无线多跳网络的通信质量,降低了输出误比特率。

The channel allocation imbalance of wireless multi-hop network channel can be caused by inter-symbol interference easily.In order to improve the channel balance of wireless multi-hop network,a wireless multi-hop network channel allocation optimization algorithm based on decision feedback equalization is proposed.The channel model of wireless multi-hop network is constructed,and the decision feedback equalizer is used for interference suppression and multi-path compensation in the process of channel allocation in wireless multi-hop network.According to the number of symbols covered by channel multi-path spread,the feedforward filter modulation in the process of network channel allocation is carried out,and the linear equilibrium configuration of wireless multi-hop network channel is carried out by using direct sequence spread spectrum method.The adaptive gradient learning algorithm is used to realize the channel allocation equalization design,and the decision feedback equalization technology is used to optimize the channel allocation in wireless multi-hop networks.The simulation results show that the channel allocation of wireless multi-hop network is balanced,the ability of anti-multi-path interference is strong,the communication quality of wireless multi-hop network is improved,and the output bit error rate is reduced.