Spectrum Allocation and Protocol Based on Cognitive Acoustic Technique in Underwater Networks  

作　　者：金志刚 李雅婧 罗咏梅 羊秋玲 

机构地区：[1]School of Electronic Information Engineering,Tianjin University [2]School of Computer Science and Technology,Tianjin University [3]College of Information Science and Technology,Hainan University

出　　处：《Transactions of Tianjin University》2016年第4期339-344,共6页天津大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.61162003);Hainan Provincial Natural Science Foundation(No.614229);Hainan Provincial Key Science and Technology Project(No.ZDXM2014086)

摘　　要：In this paper, a strategy is developed for spectrum sharing among multiple cognitive users in underwater environment. This strategy requires all nodes to negotiate and reallocate the channels before sending data, and Hungarian method is used to maximize the sharing rewards. Simulation results show that the proposed strategy can avoid collisions between source-destination node pairs, and guarantee that the communication system gets maximum sharing rewards. Both the parameters of POMDP model and the number of available channels have influence on the system sharing rewards, and the rewards will increase when the channels have larger transition probabilities or more channels are available for communication. However, the channels with larger bandwidths can attract more nodes to access, and thus will lead to more collisions.In this paper, a strategy is developed for spectrum sharing among multiple cognitive users in underwater environment. This strategy requires all nodes to negotiate and reallocate the channels before sending data, and Hun- garian method is used to maximize the sharing rewards. Simulation results show that the proposed strategy can avoid collisions between source-destination node pairs, and guarantee that the communication system gets maxi- mum sharing rewards. Both the parameters of POMDP model and the number of available channels have influence on the system sharing rewards, and the rewards will increase when the channels have larger transition probabilities or more channels are available for communication. However, the channels with larger bandwidths can attract more nodes to access, and thus will lead to more collisions.

关 键 词：underwater sensor network cognitive underwater acoustic communication spectrum sharing Hungarian method 

分 类 号：TN929.3[电子电信—通信与信息系统] TP212.9[电子电信—信息与通信工程]