船用局域网络信息传输时延的优化和控制

Optimization and control of information transmission delay in marine local area network

船用局域网络信息传输的多普勒衰减产生传输时延,为了提高传输的时效性和数据输出的实时性,提出一种基于自适应波特间隔均衡的船用局域网络信息传输时延控制方法。构建船用局域网络信息传输信道模型,采用直接序列扩频调制方法进行多普勒衰减抑制,提高数据传输的带宽扩频能力,采用波特间隔均衡方法进行传输链路层的信道均衡设计,在数据输出终端采用随机序列码进行调制解调处理,由此实现船用局域网络信息传输时延控制。仿真结果表明,采用该方法进行船用局域网络信息传输,时延较小,输出数据的正确比特率较高,抗干扰能力较强,在船舶网络通信中具有很好的应用性能。

The transmission delay attenuation of marine information transmission network Doppler, in order to improve real-time transmission timeliness and data output, a local area network information transmission delay with adaptive Potter interval balanced ship based control method. The construction of marine area network information transmission channel model, using direct sequence spread spectrum modulation method Doppler attenuation suppression, improve the bandwidth of spread spectrum data transmission capacity, the design of channel equalization method using Potter equilibrium interval transmission link layer, using random sequence code in the data output terminal of the modulation and demodulation process, the control of the boat with the local area network information transmission delay. The simulation results show that using the method of marine information transmission, local the network delay is smaller, the correct bit output data rate is high, strong anti-interference ability, in the network communication It has good application performance.