this code always give NaN when I run it on my matlab but give values when I try to run it on code ocean website

7 ビュー (過去 30 日間)
i tried to run this code with my matlab R2022a using yalmip tool and mosek solver for optimization and the code always run NaN for the optimization variables , but when i run this code on codeocean website, which contains online matlab, it work correctly and give result
can i know why ? because i want to use my matlab to show results to my supervisor the code is as follows:
clc
clear variables
warning('off','all')
rng()
ans = struct with fields:
Type: 'twister' Seed: 747307811 State: [625×1 uint32]
K=10; % number of terminals
M=30; % number of APs
N=1; % number of antennas/AP
B=20; % bandwidth in Mhz
tau_c=200; % coherence time (in symbols)
tau_p=20; % length of pilot sequences (in symbols)
D=1; %in kilometer.
[U,~,~]=svd(randn(tau_p,tau_p));% U includes tau_p orthogonal sequences
Hb = 15; % Base station height in m
Hm = 1.65; % Mobile height in m
f = 1900; % Frequency in MHz
% path loss parameters
aL = (1.1*log10(f)-0.7)*Hm-(1.56*log10(f)-0.8);
L = 46.3+33.9*log10(f)-13.82*log10(Hb)-aL;
power_f=N*1; %downlink power: 1W
noise_figure = 9; % noise figure
noise_p = 10^((-203.975+10*log10(B*10^6)+noise_figure)/10); %noise power
rho_d = power_f/noise_p; % nomalized tx power
rho_p= 0.2/noise_p; % nomalized pilot power
sigma_shd=8; % standard deviation with shadowing, in dB
d0=0.01;% km
d1=0.05;% km
channelparams.nAPs = M;
channelparams.nUsers = K;
channelparams.pathloss = L;
channelparams.dim = D;
channelparams.shadowdev = sigma_shd;
channelparams.refdist0 = d0;
channelparams.refdist1 = d1;
%Power consumption parameters:
myalpha=(1/0.4)*ones(M,1);
P_fix=0;
P_tc=0.2*ones(M,1);
P_bt=0.25*10^(-3)*ones(M,1);
P_0=0.825*ones(M,1);
P_fix_bar=P_fix + N*sum(P_tc) + sum(P_0);
% Generate large-scale fading matrix
mybeta=getslowfading(channelparams);
% Pilot Asignment: (random choice)
pilotseq=zeros(tau_p,K); % pilot sequences, the length of each sequence is tau_p
if tau_p<K
pilotseq(:,1:tau_p)=U;
for iUser=(tau_p+1):K
pilotseq(:,iUser)=U(:,randi([1,tau_p]));
end
else
pilotseq=U(:,1:K);
end
% Create gamma matrix defined in (5)
den=zeros(M,K);
for iAP=1:M
for iUser=1:K
den(iAP,iUser)=norm((mybeta(iAP,:).^(1/2)).*(pilotseq(:,iUser)'*pilotseq))^2;
end
end
mygamma=tau_p*rho_p*(mybeta.^2)./(tau_p*rho_p*den + 1);
maxIteration = 30;
EE_max_sub=zeros(maxIteration,1);
EE_max=zeros(maxIteration,1);
epsi = 0.01;
RateQoS = (tau_c/(tau_c-tau_p))*1*ones(K,1); % minimum spectral efficiency
[c_n,u_n,t_n] = generateinitialpoint(M,K,N,mygamma,mybeta,rho_d,pilotseq,RateQoS);
Unrecognized function or variable 'sdpsettings'.

Error in generateinitialpoint (line 7)
opts=sdpsettings('solver','mosek','verbose',0,'dualize',0); % set internal solver to mosek
if isnan(c_n) % problem is infeasible, stop. If required, reduce RateQoS to make it feasible
return
else
cdot_n = c_n;
%% define optimization variables
cdot = sdpvar(M,K,'full') ;
tdot = sdpvar(K,1);
udot = sdpvar(K,1);
mytheta = sdpvar;
obj= sum(tdot); % objective to be maximized; (36a); B is omitted
opts=sdpsettings('solver','mosek','verbose',0,'dualize',0); % set internal solver to mosek
%% main SCA loop
for iIter=1:maxIteration
F=[]; % reset the constraints to emmpty set
F = [F,tdot(:)>=0];
F = [F,cone([mytheta/sqrt(N)*ones(1,M);(sqrt(mygamma).*cdot)'])]; %(36b)
F = [F,cdot(:)>=0]; % (36c)
Gammaan_temp = sqrt(rho_d*noise_p*N*(repmat(myalpha,1,K).*mygamma));
F = [F,cone([sqrt(P_fix_bar)*mytheta;Gammaan_temp(:).*cdot(:);0.5*(mytheta-1)],0.5*(mytheta+1))]; % (36e)
F = [F,cone([(udot+mytheta*(log(u_n)+1)-log(2)*tdot)';(udot-mytheta*(log(u_n)+1)+log(2)*tdot)';...
2*sqrt(u_n)'*mytheta])]; %(36f)
for iUser=1:K
F = [F,cone([(1/sqrt(2^( RateQoS(iUser)) - 1))*cdot(:,iUser)'*(sqrt(rho_d)*mygamma(:,iUser));...
interferencevector(M,N,K,cdot,sqrt(rho_d)*mygamma,sqrt(rho_d)*mybeta,pilotseq,iUser);mytheta/N])]; %(36d)
approx = approxfunction(M,N,K,mygamma,mybeta,pilotseq,rho_d,cdot,udot,cdot_n,u_n,mytheta,iUser);
F = [F,cone([2*[sqrt(rho_d)*N*interferencevector(M,N,K,cdot,mygamma,mybeta,pilotseq,iUser);mytheta]; ...
mytheta - approx],...
mytheta + approx)];% 36(g)
end
diagnotics = optimize(F,-obj,opts);
if (diagnotics.problem==0)
u_n = value(udot/mytheta);
cdot_n = value(cdot/mytheta);
else
disp('potential numerical issue, disregard the result, and move on to the next run')
break
end
%% Energy efficiency
EE_max_sub(iIter) = B*(1-tau_p/tau_c)*sum(double(tdot)); % (36a)
EE_max(iIter)= 1/(1/EE_max_sub(iIter) + sum(P_bt)); % the sequence of energy efficiency objective
end
%plotting
figure
plot(1:length(EE_max),EE_max,'r')
xlabel('Iteration count')
ylabel('Energy Efficiency')
end
  5 件のコメント
Alexander
Alexander 2023 年 5 月 23 日
Function "sdpsettings" not available. Anyway I will stop here, I don't have the "Statistics and Machine Learning Toolbox".

サインインしてコメントする。

回答 (0 件)

製品


リリース

R2022a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by