?? energytableinit.m
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function energytable = EnergyTableInit(SNR,M);% Inputs:% subcar_gains : Subcarrier Gains% M : max Constellation Size% Gap : Gap of the system% Noise : Noise Power% Outputs:% energytable : Energytable %% Based on the Subcarrier Gains, we calculate the energy% increment required by each subcarrier for transmitting% 1,2 ,4 ,6,8 bits.% Energy = 2^(i-1)/subcar_gains;% ------------------------------------------------------%subcar_gains = (subcar_gains.^2)/(Gap*Noise);energytable = abs((1./SNR)'*(2.^([1:M+1]-1)));% Increase the energy value for constellation size of more than M to % a very high value so that it is not assigned.energytable(:,M+1) = Inf*ones(size(energytable(:,M+1)));for i = 3:2:M energytable(:,i) = (energytable(:,i) +energytable(:,i+1))/2; energytable(:,i+1) = energytable(:,i);end%energytable = [ones(1,size(energytable,1))' energytable];
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