initial commit / add all books

29 files changed, 478 insertions, 0 deletions

diff --git a/287/CH13/EX13.1/Exa13_1.sci b/287/CH13/EX13.1/Exa13_1.sci
new file mode 100755
index 000000000..1e3335041
--- /dev/null
+++ b/287/CH13/EX13.1/Exa13_1.sci
@@ -0,0 +1,17 @@
+//Determine level-crossing rate, avg. duration of fade for a cellular system and a vehicle speed.

+

+f = 900e+6;

+c = 3e+8;

+v = 6.67;

+rho = 0.3162;

+

+lambda = c/f;

+fm = v/lambda;

+ 

+n0 = sqrt(2*%pi)*fm;

+Tr = (1.105-1)/(n0*rho);

+Tr1 = (1/(3*v)) * (rho/sqrt(2*%pi));

+

+disp(n0, 'Level-crossing rate')

+disp(Tr, 'Avg. duration of fade (in s)')

+disp(Tr1, 'Avg. duration of fade, using appx. exp. (in s)')
\ No newline at end of file
diff --git a/287/CH13/EX13.2/Exa13_2.sci b/287/CH13/EX13.2/Exa13_2.sci
new file mode 100755
index 000000000..656193958
--- /dev/null
+++ b/287/CH13/EX13.2/Exa13_2.sci
@@ -0,0 +1,20 @@
+//Determine received signal power at MS receiver and SNR of received signal

+

+lamda = 0.2;

+d = 8000;

+Gt = 8;

+L0 = 8;

+T0 = 1.38e-23;

+Bw = 0.2e+6;

+T = 1160+290;

+

+

+Lp = -20*log10(lamda/(4*%pi*d));

+Pr = Lp + Gt - L0;

+Pn1 = T0*T*Bw;

+Pn = 10*log10(Pn1);

+

+SNR = -Pr-Pn;

+

+disp(-Pr, 'Recieved Signal power (in dBW)')

+disp(SNR, 'SNR of received signal (in dB)')
\ No newline at end of file
diff --git a/287/CH13/EX13.3/Exa13_3.sci b/287/CH13/EX13.3/Exa13_3.sci
new file mode 100755
index 000000000..e2df3b1eb
--- /dev/null
+++ b/287/CH13/EX13.3/Exa13_3.sci
@@ -0,0 +1,20 @@
+//Determine received signal power at MS receiver and SNR of received signal

+

+lamda = 30*3;

+d = 8000;

+Gt = 8;

+L0 = 8;

+T0 = 1.38e-23;

+Bw = 0.2e+6;

+T = 1160+290;

+

+

+Lp = -20*log10(lamda/(d^2));

+Pr = Lp + Gt - L0;

+Pn1 = T0*T*Bw;

+Pn = 10*log10(Pn1);

+

+SNR = -Pr-Pn;

+

+disp(-Pr, 'Recieved Signal power (in dBW)')

+disp(SNR, 'SNR of received signal (in dB)')
\ No newline at end of file
diff --git a/287/CH13/EX13.4/Exa13_4.sci b/287/CH13/EX13.4/Exa13_4.sci
new file mode 100755
index 000000000..3052a71ed
--- /dev/null
+++ b/287/CH13/EX13.4/Exa13_4.sci
@@ -0,0 +1,8 @@
+//Determine the probability that the signal exceeds the receiver senstivity

+

+Smin = 100;

+Pr = -110;

+

+Ps =  0.5 - 0.5*((Pr + Smin)/(10*1.414));

+

+disp(Ps, 'Probability that the signal exceeds the receiver senstivity is')
\ No newline at end of file
diff --git a/287/CH13/EX13.5/Exa13_5.sci b/287/CH13/EX13.5/Exa13_5.sci
new file mode 100755
index 000000000..51b03a4d7
--- /dev/null
+++ b/287/CH13/EX13.5/Exa13_5.sci
@@ -0,0 +1,15 @@
+//Determine mean path loss by two models

+

+Lr = 31.7;

+gamma1 = 5.22;

+gamma2 = 3.27;

+R = 30;

+R0 = 1;

+FAF = 24.4;

+

+

+Ls1 = Lr + 10*gamma1*log10(R/R0) ;

+Ls2 = Lr + 10*gamma1*log10(R/R0) + FAF ;

+

+disp(Ls1, 'Mean path loss by 1st model (in dB)')

+disp(Ls2, 'Mean path loss by 2nd model (in dB)')
\ No newline at end of file
diff --git a/287/CH14/EX14.2/Exa14_2.sci b/287/CH14/EX14.2/Exa14_2.sci
new file mode 100755
index 000000000..50ac4ff92
--- /dev/null
+++ b/287/CH14/EX14.2/Exa14_2.sci
@@ -0,0 +1,23 @@
+//Determine the following parameters.

+

+t = 120;

+d = 24;

+BH = 5;

+BW = 5000;

+RFw = 200;

+S = 60000;

+A = 500;

+

+E = t/(d*BH*60);

+Nrf = BW/RFw;

+Srf = Nrf/(4*3);

+TCH = Srf*8;

+Tbts = 9.82*3;  //Using Erlang B table

+Sbts = (Tbts*1000)/TCH;

+BTSn = S/Sbts;

+R = sqrt(A/(BTSn*Srf));

+

+disp(E, 'Erlangs per subscriber')

+disp(TCH, 'Traffic Channels per sector')

+disp(BTSn, 'No. of BTS in a zone')

+disp(R, 'Avg. Hexagonal cell radius (in Km)')

diff --git a/287/CH14/EX14.3/Exa14_3.sci b/287/CH14/EX14.3/Exa14_3.sci
new file mode 100755
index 000000000..d53e9bf69
--- /dev/null
+++ b/287/CH14/EX14.3/Exa14_3.sci
@@ -0,0 +1,20 @@
+//Determine the minimum signal power required

+

+K = 1.38e-20;

+T = 290;

+Nf = 5;

+EbNt = 13.5;

+Rb = 271;

+Bc = 200;

+Tg = 0;

+Rg = 12;

+Rl = 2.5;

+Fm = 10;

+

+Nt = 10*log10(K*T) + Nf;

+SNr = EbNt + 10*log10(Rb/Bc);

+Smin = EbNt + 10*log10(Rb*1000) + Nt;

+Lpmax = 30 - Smin + (Tg+Rg) - (Rl+Fm );

+

+disp(Smin, 'Min. Signal Power Required (in dBm)')

+disp(Lpmax, 'Max. allowable path loss (in dB)')
\ No newline at end of file
diff --git a/287/CH14/EX14.4/Exa14_4.sci b/287/CH14/EX14.4/Exa14_4.sci
new file mode 100755
index 000000000..06e5f5bba
--- /dev/null
+++ b/287/CH14/EX14.4/Exa14_4.sci
@@ -0,0 +1,18 @@
+//Design a cellular system using GMSK modulation

+

+Smin = -102;

+fc = 900;

+ht = 160;

+ahr = 2.69;

+d = 10;

+Gt = 16;

+Gr = 1;

+Lft = 1;

+Lfr = 1;

+fm = 10.5;

+

+Lp = 69.55 + 26.16*log10(fc) - 13.83*log10(ht) - ahr + (44.9 - 6.55*log10(ht))*log10(d) ;

+Pt = Smin - (Gt+Gr) + (Lft + Lfr + fm) + Lp;

+

+disp(Lp, 'Path Loss (in dB)')

+disp(Pt, 'Required transmitted power for a GMSK MS (in dBm)')

diff --git a/287/CH14/EX14.5/Exa14_5.sci b/287/CH14/EX14.5/Exa14_5.sci
new file mode 100755
index 000000000..096da0cfd
--- /dev/null
+++ b/287/CH14/EX14.5/Exa14_5.sci
@@ -0,0 +1,18 @@
+//Design a cellular system for PCS system using QPSK modulation

+

+Smin = -91.4;

+fc = 1800;

+ht = 50;

+ahr = -4.53;

+d = 1;

+Gt = 12;

+Gr = 0;

+Lft = 1;

+Lfr = 1;

+fm = 10.5;

+

+Lp = 69.55 + 26.16*log10(fc) - 13.83*log10(ht) - ahr + (44.9 - 6.55*log10(ht))*log10(d) ;

+Pt = Smin - (Gt+Gr) + (Lft + Lfr + fm) + Lp;

+

+disp(Lp, 'Path Loss (in dB)')

+disp(Pt, 'Required transmitted power for a GMSK MS (in dBm)')

diff --git a/287/CH14/EX14.6/Exa14_6.sci b/287/CH14/EX14.6/Exa14_6.sci
new file mode 100755
index 000000000..68f978b13
--- /dev/null
+++ b/287/CH14/EX14.6/Exa14_6.sci
@@ -0,0 +1,18 @@
+//Design a TDMA frame for a cellular system

+

+Nca1 = 1'

+Nca2 = 2;

+Rbmin = 8;

+a1 = 0.1;

+nf = 0.75;

+Rc = 0.5;

+

+Nslot1 = 16/Nca1;

+Nslot2 = 16/Nca2;

+Rs1 = (Rbmin*(1+a1)*Nslot1)/(nf*Rc);

+Rs2 = (Rbmin*(1+a1)*Nslot2)/(nf*Rc);

+

+disp(Nslot1, 'Nslot for Nca=1')

+disp(Nslot2, 'Nslot for Nca=2')

+disp(Rs1, 'Rs for Nca=1 (in ksymbols/s)')

+disp(Rs2, 'Rs for Nca=2 (in ksymbols/s)')
\ No newline at end of file
diff --git a/287/CH17/EX17.1/Exa17_1.sci b/287/CH17/EX17.1/Exa17_1.sci
new file mode 100755
index 000000000..73f448164
--- /dev/null
+++ b/287/CH17/EX17.1/Exa17_1.sci
@@ -0,0 +1,8 @@
+//Determine the mean STP message transfer time using ITU-T recommendations

+

+Tph = 22;

+Tod = 8.2;

+

+t = Tph + Tod ;

+

+disp(t, 'STP Message Transfer Time (in ms)')
\ No newline at end of file
diff --git a/287/CH17/EX17.2/Exa17_2.sci b/287/CH17/EX17.2/Exa17_2.sci
new file mode 100755
index 000000000..8c0a41a21
--- /dev/null
+++ b/287/CH17/EX17.2/Exa17_2.sci
@@ -0,0 +1,25 @@
+//Determine the no. of circuits for en bloc signaling and overlap signaling

+

+S = 0.7;

+Hs = 150;

+U = 1-S;

+Hu = 20;

+

+SC = 0.8;

+

+Ns = 11;

+Nu = 4;

+

+D = S*Hs + U*Hu ;

+BHCA = (3600*SC)/D; //Using value from table - 3600

+N = Ns*S + Nu*U ;

+M1 = ( (95/2)*S + (63/2)*U );    //From Table given

+M2 = ( (114/2)*S + (63/2)*U );

+N1 = (8000*3600*0.2)/(M1*BHCA);

+N2 = (8000*3600*0.2)/(M2*BHCA);

+

+disp(D, 'Mean duration of a call (in s)')

+disp(BHCA, 'No. of Busy Hour Call Attempts (BHCA) per circuit')

+disp(N+0.1, 'Mean no. of digits dialed per call (apprx.)')

+disp(N1, 'No. of circuits serviced by En Bloc Signalling');

+disp(N2, 'No. of circuits serviced by Overlap Signalling');
\ No newline at end of file
diff --git a/287/CH18/EX18.1/Exa18_1.sci b/287/CH18/EX18.1/Exa18_1.sci
new file mode 100755
index 000000000..4118e495f
--- /dev/null
+++ b/287/CH18/EX18.1/Exa18_1.sci
@@ -0,0 +1,7 @@
+//Determine the usage in seconds,CCS and Erlangs which has accumulated on the piece of the equipment

+

+U = (450-0)*(5/3600)

+

+disp(U, 'Usage in Erlangs')

+disp(U*36, 'Usage in CCS')

+disp(U*36*100, 'Usage in seconds')
\ No newline at end of file
diff --git a/287/CH18/EX18.2/Exa18_2.sci b/287/CH18/EX18.2/Exa18_2.sci
new file mode 100755
index 000000000..916dbc7fc
--- /dev/null
+++ b/287/CH18/EX18.2/Exa18_2.sci
@@ -0,0 +1,8 @@
+//Determine the offered load

+

+CCS = 2900;

+p = 0.05;

+

+U = CCS/(1-p);

+

+disp(U, 'Offered Load (in CCS)');

diff --git a/287/CH18/EX18.3/Exa18_3.sci b/287/CH18/EX18.3/Exa18_3.sci
new file mode 100755
index 000000000..506826b58
--- /dev/null
+++ b/287/CH18/EX18.3/Exa18_3.sci
@@ -0,0 +1,7 @@
+//Determine the traffic intensity

+

+t = 120;

+

+I = (2*t)/3600;

+

+disp(I*36, 'Traiffic Intensity (in CCS)');
\ No newline at end of file
diff --git a/287/CH18/EX18.4/Exa18_4.sci b/287/CH18/EX18.4/Exa18_4.sci
new file mode 100755
index 000000000..27472108c
--- /dev/null
+++ b/287/CH18/EX18.4/Exa18_4.sci
@@ -0,0 +1,13 @@
+////Determine the traffic intensity in Erlangs and CCS

+

+n = 10;

+t = 1.5;

+Cd = 60+74+80+90+92+70+96+48+64+126;

+

+CAR = n/t;

+Hbar = Cd/10; 

+

+I = (CAR*Hbar)/3600;

+

+disp(I, 'Traiffic Intensity (in Erlangs)');

+disp(I*36, 'Traiffic Intensity (in CCS)');
\ No newline at end of file
diff --git a/287/CH18/EX18.5/Exa18_5.sci b/287/CH18/EX18.5/Exa18_5.sci
new file mode 100755
index 000000000..52ae69ddd
--- /dev/null
+++ b/287/CH18/EX18.5/Exa18_5.sci
@@ -0,0 +1,17 @@
+////Determine the traffic intensity during the eight-hour period and the busy hour

+

+n = 11;

+t = 8;

+Cd1 = 3+10+7+10+5+5+1+5+15+34+5;

+Cd2 = 34+5;

+CAR2 = 2;

+

+CAR1 = n/t;

+Hbar1 = Cd1/(n*60);

+Hbar2 = Cd2/(CAR2*60);

+

+I1 = CAR1 * Hbar1 ;

+I2 = CAR2 * Hbar2 ;

+

+disp(I1*36, 'Traiffic Intensity (in CCS)')

+disp(I2*36, 'Traiffic Intensity during busy hour (in CCS)')
\ No newline at end of file
diff --git a/287/CH18/EX18.6/Exa18_6.sci b/287/CH18/EX18.6/Exa18_6.sci
new file mode 100755
index 000000000..4e92d1f41
--- /dev/null
+++ b/287/CH18/EX18.6/Exa18_6.sci
@@ -0,0 +1,31 @@
+//Determine ABS/BH switch calling rate and CCS for a switch

+

+RL = 12000;

+n = 80000;

+BL = 64000;

+HL = 4000;

+CRr = 2;

+CRb = 3;

+CRh = 10;

+HTr = 140;

+HTb = 160;

+HTh = 200;

+

+RLp = RL/n;

+BLp = BL/n;

+HLp = HL/n;

+CCSrl = CRr * (HTr/100);

+CCSbl = CRb * (HTb/100);

+CCShl = CRh * (HTh/100);

+SCR = (CRr*RLp) + (CRb*BLp) + (CRh*HLp) ;

+Sccs = (CCSrl*RLp) + (CCSbl*BLp) + (CCShl*HLp) ;

+

+Aht = (Sccs/SCR)*100;

+ABSc = SCR*n;

+ABSu = (Sccs*n)/36;

+

+Dcc = 1.5*ABSc;

+De = 1.5*ABSu;

+

+disp(Dcc, 'Design call capacity based on HD')

+disp(De, 'Design erlangs based on HD')
\ No newline at end of file
diff --git a/287/CH18/EX18.7/Exa18_7.sci b/287/CH18/EX18.7/Exa18_7.sci
new file mode 100755
index 000000000..a3711cb68
--- /dev/null
+++ b/287/CH18/EX18.7/Exa18_7.sci
@@ -0,0 +1,9 @@
+//Determine the offered load and channels required

+

+CPH = 4000;

+ACH = 150

+

+A = (CPH*ACH)/3600;

+

+disp(A, 'Offered Load');

+disp(182, 'Channels REquired (using Erlang B table)')
\ No newline at end of file
diff --git a/287/CH18/EX18.8/Exa18_8.sci b/287/CH18/EX18.8/Exa18_8.sci
new file mode 100755
index 000000000..960cf9642
--- /dev/null
+++ b/287/CH18/EX18.8/Exa18_8.sci
@@ -0,0 +1,11 @@
+//Determine the no. of users supported

+

+BHA = 1.2;

+ACH = 120;

+

+C = 40.26;   //from Erlang B table

+

+At = (BHA*ACH)/3600;

+N = C/At;

+

+disp(N, 'No. of users supported');
\ No newline at end of file
diff --git a/287/CH3/EX3.1/Exa3_1.sci b/287/CH3/EX3.1/Exa3_1.sci
new file mode 100755
index 000000000..2428bb4f5
--- /dev/null
+++ b/287/CH3/EX3.1/Exa3_1.sci
@@ -0,0 +1,28 @@
+//Determine the spectral efficiency using the given parameters

+

+Bw = 12.5e+3;

+Cd = 200;

+

+A = 8;

+At = 4000;

+N = 4;

+F = 4;

+

+C = Bw/Cd;

+Tc = C*A;

+Ts = 3;

+Tc1 = ((Tc/F) - Ts);

+N1 = At/A;

+T1 = 108.4

+

+N = (T1*N1*1e+3)/(At*Bw);

+

+disp(C, 'No. of 200 Khz channels')

+disp(Tc, 'No. of traffic channels')

+disp(Ts, 'No. of signaling channels')

+disp(Tc1, 'No. of traffic channels per cell')

+disp(N1 , 'No. of cells')

+disp(T1, 'Total traffic carried by 121 channels with 2% blocking (using Erlang B Formula)')

+

+

+disp(N, 'Efficiency (in Erlangs/Mhz/km2)')
\ No newline at end of file
diff --git a/287/CH3/EX3.2/Exa3_2.sci b/287/CH3/EX3.2/Exa3_2.sci
new file mode 100755
index 000000000..f5d98e013
--- /dev/null
+++ b/287/CH3/EX3.2/Exa3_2.sci
@@ -0,0 +1,16 @@
+//Determine the efficiency of the TDMA system

+

+e = 13;

+d = 16.2

+Tf = 40;

+Mt = 6;

+Bu = 30;

+Nu = 395;

+Bw = 12.5e+3;

+

+t = (e/d)*(Tf/Mt);

+Na = ((t*Mt)/Tf)*((Bu*Nu)/Bw)

+Op = (1 - Na)*100;

+

+disp(t, 'Time slot duration (in ms)')

+disp(Op, 'Percentage Overhead portion of the frame (in %)')
\ No newline at end of file
diff --git a/287/CH3/EX3.3/Exa3_3.sci b/287/CH3/EX3.3/Exa3_3.sci
new file mode 100755
index 000000000..ea05aa840
--- /dev/null
+++ b/287/CH3/EX3.3/Exa3_3.sci
@@ -0,0 +1,14 @@
+//Determine the capacity & spectral efficiency of a TDMA system

+

+Nb = 0.9;

+u = 2;

+Bw = 12.5e+6;

+Vf = 1;

+R = 16.2e+3;

+N = 19;

+

+Nu = ( ((Nb*u)/Vf) * (Bw/(R*N)) );

+N1 = ( (Nu*R) / (Bw) );

+

+disp(Nu, 'Nu')

+disp(N1, 'Spectral Efficiency (in bits/sec/Hz)')

diff --git a/287/CH3/EX3.4/Exa3_4.sci b/287/CH3/EX3.4/Exa3_4.sci
new file mode 100755
index 000000000..f226a2f1c
--- /dev/null
+++ b/287/CH3/EX3.4/Exa3_4.sci
@@ -0,0 +1,20 @@
+//Determine the frame efficiency & no. of channels per frame of GSM TDMA system

+

+Nr = 2;

+Br = 148*8;

+Nt = 24;

+Bp = 34*8;

+Bg = 8.25;

+Tf = 120e-3;

+Rrf = 270.8333e+3;

+R = 22.8;

+

+B0 = ( (Nr*Br) + (Nt*Bp) + (Nt+Nr)*Bg );

+Bt = Tf * Rrf;

+N = (1 - (B0/Bt))*100 ;

+Ncf = ( (N*Rrf)/(R*1e+5) ) ;

+

+disp(B0, 'B0')

+disp(Bt, 'Bt')

+disp(N, 'Frame Efficiency of TDMA system (in %)')

+disp(Ncf, 'No. of channels/frame')
\ No newline at end of file
diff --git a/287/CH4/EX4.1/Exa4_1.sci b/287/CH4/EX4.1/Exa4_1.sci
new file mode 100755
index 000000000..75c2bc2f0
--- /dev/null
+++ b/287/CH4/EX4.1/Exa4_1.sci
@@ -0,0 +1,12 @@
+//Determine following parameters

+

+N = 4;

+Lo = 85.26;

+

+Cn = (Lo*3600)/120;

+SI =  10*log10((3.5^4)/6);

+

+disp(Cn, 'No. of calls per cell site per hour')

+disp(2558, 'No. of calls per cell site per hour (apprx.)')

+

+disp(SI, 'Mean S/I ratio for cell reuse factor 4 (in db)')

diff --git a/287/CH4/EX4.2/Exa4_2.sci b/287/CH4/EX4.2/Exa4_2.sci
new file mode 100755
index 000000000..8b4390ba0
--- /dev/null
+++ b/287/CH4/EX4.2/Exa4_2.sci
@@ -0,0 +1,10 @@
+//Determine following parameters

+

+N = 4;

+Lo = 107.8

+

+Cn = (Lo*3600)/120;

+SI =  10*log10((3.5^4)/6);

+

+disp(Cn, 'No. of calls per cell site per hour')

+disp(SI, 'Mean S/I ratio for cell reuse factor 4 (in db)')

diff --git a/287/CH4/EX4.3/Exa4_3.sci b/287/CH4/EX4.3/Exa4_3.sci
new file mode 100755
index 000000000..d196f7c27
--- /dev/null
+++ b/287/CH4/EX4.3/Exa4_3.sci
@@ -0,0 +1,24 @@
+//Determine following parameters

+

+N = 7;

+A = 1200;

+Ct = 395;

+Ts = 9597;

+Tc = 358;

+Te = 287.9;

+Nc = 8637;

+

+As = Ts/Tc;

+E = Te/A;

+Sd = Ts/A;

+Cd = Nc/A;

+Ae = A/N;

+Cn = Tc/Ct;

+

+

+disp(As, 'Avg. No. of subscribers/channel')

+disp(E, 'Erlangs/mile2 )')

+disp(Sd, 'Subscriber Density (in Subscribers/mile2)')

+disp(Cd, 'Call Density (in calls/mile2)')

+disp(Ae, 'Area of each cell (in miles2)')

+disp(Cn, 'Channel Reuse factor')
\ No newline at end of file
diff --git a/287/CH4/EX4.4/Exa4_4.sci b/287/CH4/EX4.4/Exa4_4.sci
new file mode 100755
index 000000000..689596c60
--- /dev/null
+++ b/287/CH4/EX4.4/Exa4_4.sci
@@ -0,0 +1,13 @@
+//Determine following parameters

+

+N = 7;

+C = 395;

+

+Nc = C/N;

+Se1 = 39.8/63.1;

+Se2 = 5.8648/1.384;

+

+disp(Nc, 'No. of voice channels/cell site')

+disp(Se1, 'Spectral Efficiency in analog system')

+

+disp(Se2, 'Spectral Efficiency in digital system')
\ No newline at end of file
diff --git a/287/CH6/EX6.1/Exa6_1.sci b/287/CH6/EX6.1/Exa6_1.sci
new file mode 100755
index 000000000..8c767f9e1
--- /dev/null
+++ b/287/CH6/EX6.1/Exa6_1.sci
@@ -0,0 +1,28 @@
+//Consider GSM system with following data and show the advantage of adaptive array antennas

+

+kT = -174;

+Bw = 200e+3;

+F = 7;

+SI = 12;

+

+W = 29;

+Lc = 2;

+fm = 10;

+Gbs = 20;

+Gm = 0;

+

+Gamma = 4;

+PLmax = 139;

+I0 = 80;

+

+Acover = 6e+4;

+

+PRmin = kT + (10*log10(Bw)) + F + SI ;

+PLmax = W - PRmin - Lc - fm + Gbs + Gm ;

+R = (PLmax - I0)^(1/4);

+N = Acover/(2.6*R^2);

+

+disp(PRmin, 'Required minimum received power is (in dBm)')

+disp(PLmax, 'Max. allowable path loss is (in dB)')

+disp(R, 'Cell Radius (in miles)')

+disp(N, 'No. of cells required')
\ No newline at end of file