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Programming Assignment presentation

Programming Assignment presentation. By AbdulRahman AlKhayyat Muhammad Felimban. Encoding Techniques. NRZL NRZL AMI PSEUDO MANCH DIFMANCH. NRZL - NRZI. NRZL : 0  ‘+’ pulse 1  ‘-’ pulse NRZI : 0  same pulse 1  change pulse. AMI - PSEUDO. AMI : 0  0 pulse 1  alternate ‘+’ & ‘-’

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Programming Assignment presentation

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  1. Programming Assignment presentation ByAbdulRahman AlKhayyatMuhammad Felimban

  2. Encoding Techniques • NRZL • NRZL • AMI • PSEUDO • MANCH • DIFMANCH

  3. NRZL - NRZI • NRZL :0  ‘+’ pulse1  ‘-’ pulse • NRZI :0  same pulse1  change pulse

  4. AMI - PSEUDO • AMI :0  0 pulse1  alternate ‘+’ & ‘-’ • PSEUDO :0  alternate ‘+’ & ‘-’ • 1  0 pulse

  5. MANCH - DIFMANCH • MANCH :0  ‘+’ to ‘-’1  ‘-’ to ‘+’ • DIFMANCH :0  ‘+’ to ‘-’ with last pulse ‘-’1  ‘-’ to ‘+’ with last pulse ‘-’ • 0  ‘-’ to ‘+’ with last pulse ‘+’ 1  ‘+’ to ‘-’ with last pulse ‘+’

  6. Programming Tool MATLAB for 1st time :- Matrix Laboratory- Powerful with matrixoperations- Ability of graphical representation

  7. MATLAB Interface

  8. MATLAB tools Code Editor

  9. MATLAB tools • Algorithm and development • Math and computation • Data acquisition • Modeling and simulating • Data analysis • Scientific and engineering graphics • Application development Library contains :

  10. program codes

  11. program codes • Get the binary bits from a file • Encode by proper encoding scheme • NRZL,NRZI, AMI and PSEUDO :straight forward representing of 0 or pulse, with a consideration of last pulse

  12. program codes • For MANCH and DIFMANCH, more techniques are used • Saving every bit as a 2-bits (01 or 10) in a new file, depending on the last pulse • Then read from the new file, and simply represent the data as before in previous schemes

  13. program codes • Before drawing the bits, we need to divide the Tb by 2 to make every 2-bits represent one bit in our graphNeed more explain ?

  14. More explain

  15. Graphing concepts • We are making 2 arrays, one for the time and one for the value representing the bit • Then by making a loop to take the values of every bit and storing it in the values array, and so on with the time array

  16. Generating the graphs For NRZL :clear all load here.txt x = here; InputSize = length(x);

  17. Generating the graphs % Generating the NRZL : t=[];u=[]; periode= 1; for i = 1 : InputSize tt = (i-1)*periode:1: (i)*periode; if x(i) == 1 uu= zeros(size(tt)); else uu = ones(size(tt)); end t=[t tt]; u=[u uu]; end plot(t,u), axis([0 length(x) -2 2]) grid xlabel('t(s)') ylabel('u(t)') title('NRZL')

  18. MANCH GRAPH For MANCH : clear all load here.txt x = here; InputSize = length(x);

  19. MANCH GRAPH % Generating the MANCH : counter = 1; for i = 1 : InputSize if x(i) == 1 y(counter) = '1'; fid = fopen('MANCH.txt','w'); fprintf(fid,'%c \n',y); fclose(fid) y(counter+1) = '0'; fid = fopen('MANCH.txt','w'); fprintf(fid,'%c \n',y); counter = counter + 2; else y(counter) = '0'; fid = fopen('MANCH.txt','w'); fprintf(fid,'%c \n',y); fclose(fid) y(counter+1) = '1'; fid = fopen('MANCH.txt','w'); fprintf(fid,'%c \n',y); counter = counter + 2; end fclose(fid) end clear all load MANCH.txt x = MANCH; InputSize = length(x); t=[];u=[]; periode= 1; for i = 1 : InputSize tt = (i-1)*periode:1: (i)*periode; if x(i) == 1 uu = zeros(size(tt)); else uu = ones(size(tt)); end t=[t tt]; u=[u uu]; end plot(t/2,u), axis([0 length(x)/2 -2 2]) grid xlabel('t(s)') ylabel('u(t)') title('MANCH')

  20. Hope you enjoy our programming AlKhyyat & Filemban

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