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leach分簇算法仿真基于matlab

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2021-02-28 09:39
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2021年2月28日发(作者：很久以前英文)


leach


分簇算法仿真


(

基于


matlab)


























leach


分簇算法仿真（基于


matlab


）



2007-12-07 21:46


%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


%% %%%%%%%%%%%%%%%%%%%%%%


%







































































%


% SEP: A Stable Election Protocol for clustered

























%


%







heterogeneous wireless sensor networks



























%


%







































































%


% (c) Georgios Smaragdakis














































%


% WING group, Computer Science Department, Boston University












%


%







































































%


% You can find full documentation and related information at:











%


% /sep

















































%


%







































































%


% To report your comment or any bug please send e-mail to:














%


%


gsmaragd@




















































%


%







































































% < /p>


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%


%%%%%%%%%%%%%%%%%%%%%%%%



%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%


%%%%%%%%%%%%%%%%%% %%%%%%


%







































































%


% This is the LEACH [1] code we have used.






























%


% The same code can be used for FAIR if m=1





























%


%







































































%


% [1] lman, A.P


.Chandrakasan and ishnan,














%


%






"An application-specific protocol architecture for wireless







%


%







microsensor


networks"












































%


%






IEEE Transactions on Wireless Communications, 1(4):660-670,2002 %


%







































































%


%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%


%%%%%%%%%%%%%%%%% %%%%%%%



clear;



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


PARAMETERS %%%%%%%%%%%%%%%%%%%%%%%%%%%%



%Field Dimensions - x and y maximum (in meters)


xm = 200;


ym = 200;



%x and y Coordinates of the Sink


sink.x =0.5 * xm;


sink.y = ym + 50;



%Number of Nodes in the field


n = 200



%Optimal Election Probability of a node


%to become cluster head


p=0.05;


packetLength = 4000;%


数据包长度



ctrPacketLength = 100;%


控制包长度



%Energy Model (all values in Joules)


%Initial Energy


Eo = 0.5;


%Eelec=Etx=Erx


ETX=50*0.000000001;


ERX=50*0.000000001;


%Transmit Amplifier types


Efs=10*0.;


Emp=0.0013*0.;


%Data Aggregation Energy


EDA=5*0.000000001;



%Values for Hetereogeneity


%Percentage of nodes than are advanced


m=1;


%alpha


a=1;


INFINITY = 999999999999999;


%maximum number of rounds


rmax=2000



%%%%%%%%%%%%%%%%%%%%%%%%%


PARAMETERS %%%%%%%%%%%%%%%%%%%%%%%%



%Computation of do


do=sqrt(Efs/Emp);



%Creation of the random Sensor Network


figure(1);


for i=1:1:


























n


S(i).xd=rand(1,1)*xm;%


坐标



XR(i)=S(i).xd;


S(i).yd=rand(1,1)*ym;


YR(i)=S(i).yd;


S(i).G=0;


%initially there are no cluster heads only nodes


S(i).type='N';%

< p>
普通节点




temp_rnd0 = i;


%Random Election of Normal Nodes


%if (temp_rnd0>=m*n+1)


S(i).E=Eo;


S(i).ENERGY=0;


% plot(S(i).xd,S(i).yd,'o');


% hold on;


% end


%Random Election of Advanced Nodes


% if (temp_rnd0<m*n+1)


%






S(i).E=Eo*(1+a)


%






S(i).ENERGY=1;


%






%plot(S(i).xd,S(i).yd,'+');


%





%hold on;


% end


end



S(n+1).xd=sink.x;


S(n+1).yd=sink.y;


END


OF


%plot(S(n+1).xd,S(n+1).yd,'x');




%First Iteration


figure(1);



%counter for CHs


countCHs=0;


%counter for CHs per round


rcountCHs=0;


cluster=1;



countCHs;


rcountCHs=rcountCHs+countCHs;


flag_first_dead=0;



for r=0:1:rmax %


主循环

,


每次


1


轮



r



%Operation for epoch


if(mod(r, round(1/p) )==0)


for i=1:1:n


S(i).G=0;


S(i).cl=0;


end


end



hold off;



%Number of dead nodes


dead=0;


%Number of dead Advanced Nodes


dead_a=0;


%Number of dead Normal Nodes


dead_n=0;



%counter for bit transmitted to Bases Station and to Cluster Heads


packets_TO_BS=0;


packets_TO_CH=0;


%counter for bit transmitted to Bases Station and to Cluster Heads


%per round


PACKETS_TO_CH(r+1)=0;


PACKETS_TO_BS(r+1)=0;


-


-


-


-


-


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