Underwater Acoustic Information Network Nodes Spread Spectrum Communication Technology Research

Underwater information network is divided into competitive underwater acoustic networks and non competitive underwater acoustic network. Competitive underwater acoustic network contains conflict avoidance and conflict channel interference suppression technology, non competitive underwater acoustic network contains code division multiple access, frequency division multiple access time division multiple access. Based on the analysis of underwater acoustic spread spectrum communication network node, on the basis of study the competitive underwater acoustic network access technology, as well as competitive underwater acoustic network to avoid conflict and interference suppression technique.First built underwater acoustic network nodes spread spectrum communication system, including modeling, acoustic multipath underwater acoustic channel equalization; Direct sequence spread spectrum underwater acoustic networks system each function module implement, on this basis, the analysis of the performance of underwater acoustic spread spectrum communication network node.Then on the basis of the underwater acoustic communication network node analysis the whole of the underwater acoustic spread spectrum communication networks and protocols for underwater acoustic communication network structure framework, the competitive underwater acoustic network with the competitive underwater acoustic network were analyzed; Research is mainly focused on the competitive underwater acoustic network detection, and communication channels in the signaling listening, of correlation detection, and communication channel signaling listening is studied and simulated.Finally studied the competitive interference suppression techniques in underwater acoustic network channel conflict, including the channel conflict of synchronous signal interference suppression, carrier interference channel model and carrier signal interference suppression; And give the theoretical derivation and simulation.This paper probes into the underwater acoustic network node of the spread spectrum communication channel equalization and the performance of the underwater acoustic spread spectrum communication, on the basis of the underwater acoustic spread spectrum communication is introduced network structure, the research is mainly focused on the competitive underwater acoustic network access technology, detection of underwater acoustic channel, communication signaling listen algorithm, the competitive underwater acoustic network interference suppression algorithm is also given.