资源简介
该文件主要包含,无线传感器网络(WSN)中的拓扑模型的建立,及该网络中无线节点接收信号的衰减模型
代码片段和文件信息
function calculate_neighbor(comm_ranchor_comm_rmodelDOI)
% comm_r:通信半径
% anchor_comm_r:锚节点的通信半径是未知节点通信半径的倍数
% model:选择的通信模型
% DOI:不规则度,model为 ‘DOI Model‘‘RIM Model‘时有效否则可缺省
load ‘../Deploy Nodes/coordinates.mat‘;
load ‘Transmission Model/Parameters_Of_Models.mat‘;
directory=cd;
if nargin==2 %输入默认采用Regular Model
model=‘Regular Model‘;
end
cd([‘Transmission Model/Regular Model‘]);
RSS_threshold=dist2rss(comm_r);
SendingPower=RSS_threshold+Pl_d0+10*eta*log10(comm_r*anchor_comm_r/d0);
cd([‘../‘model]);
try
for i=1:all_nodes.nodes_n
dist=sqrt(sum(transpose((repmat(all_nodes.true(i:)all_nodes.nodes_n-11)-all_nodes.true([1:i-1i+1:all_nodes.nodes_n]:)).^2)));
RSS=dist2rss(dist);
if i<=all_nodes.anchors_n
RSS(1:all_nodes.anchors_n-1)=RSS(1:all_nodes.anchors_n-1)+(SendingPower-Pt);
else
RSS(1:all_nodes.anchors_n)=RSS(1:all_nodes.anchors_n)+(SendingPower-Pt);
end
neighbor_i=RSS>RSS_threshold;
neighbor_matrix(i:)=[neighbor_i(1:i-1)0neighbor_i(i:all_nodes.nodes_n-1)];
neighbor_rss(i:)=[RSS(1:i-1)SendingPowerRSS(i:all_nodes.nodes_n-1)];
end
catch
for i=1:all_nodes.nodes_n
dist=sqrt(sum(transpose((repmat(all_nodes.true(i:)all_nodes.nodes_n-11)-all_nodes.true([1:i-1i+1:all_nodes.nodes_n]:)).^2)));
if DOI==0
K_i=ones(1all_nodes.nodes_n-1);
else
K(1)=1;
for k=2:360
doi=unifrnd(-DOIDOI11);
K(k)=K(k-1)+doi;
end
while abs(K(1)-K(360))>DOI
for k=2:360
doi=unifrnd(-DOIDOI11);
K(k)=K(k-1)+doi;
end
end
K_i=K(unidrnd(3601all_nodes.nodes_n-1));
end
RSS=dist2rss(distK_i);
if i<=all_nodes.anchors_n
RSS(1:all_nodes.anchors_n-1)=RSS(1:all_nodes.anchors_n-1)+(SendingPower-Pt);
else
RSS(1:all_nodes.anchors_n)=RSS(1:all_nodes.anchors_n)+(SendingPower-Pt);
end
neighbor_i=RSS>RSS_threshold;
neighbor_matrix(i:)=[neighbor_i(1:i-1)0neighbor_i(i:all_nodes.nodes_n-1)];
neighbor_rss(i:)=[RSS(1:i-1)SendingPowerRSS(i:all_nodes.nodes_n-1)];
end
end
cd(directory);
try
save neighbor.mat neighbor_matrix neighbor_rss comm_r anchor_comm_r model DOI;
catch
save neighbor.mat neighbor_matrix neighbor_rss comm_r anchor_comm_r model;
end
end
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