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Working Kerr effect; PDM; speedups; removed unused files
[4yp.git]
/
chromaticDispersion1Signal.m
diff --git
a/chromaticDispersion1Signal.m
b/chromaticDispersion1Signal.m
index
dd169ac
..
6441dd5
100644
(file)
--- a/
chromaticDispersion1Signal.m
+++ b/
chromaticDispersion1Signal.m
@@
-5,7
+5,7
@@
Rsym = 2.5e10; % symbol rate (sym/sec)
span = 6; % Tx/Rx filter span
rolloff = 0.25; % Tx/Rx RRC rolloff
span = 6; % Tx/Rx filter span
rolloff = 0.25; % Tx/Rx RRC rolloff
-sps =
2
; % samples per symbol
+sps =
8
; % samples per symbol
fs = Rsym * sps; % sampling freq (Hz)
Tsamp = 1 / fs;
fs = Rsym * sps; % sampling freq (Hz)
Tsamp = 1 / fs;
@@
-21,9
+21,9
@@
x = normalizeEnergy(x, numSymbs*sps, 1);
%% Simulate chromatic dispersion
D = 17; % ps / (nm km)
lambda = 1550; % nm
%% Simulate chromatic dispersion
D = 17; % ps / (nm km)
lambda = 1550; % nm
-z = 500
0
% km
+z = 500 % km
-[xCD, xCDkstart] = chromaticDispersion
_FFT
(x, D, lambda, z, Tsamp);
+[xCD, xCDkstart] = chromaticDispersion(x, D, lambda, z, Tsamp);
EbN0_db = 8;
snr = EbN0_db + 10 * log10(log2(M)) - 10 * log10(sps);
EbN0_db = 8;
snr = EbN0_db + 10 * log10(log2(M)) - 10 * log10(sps);
@@
-32,11
+32,16
@@
snr = EbN0_db + 10 * log10(log2(M)) - 10 * log10(sps);
y = xCD;
r = rxFilter(y, rolloff, span, sps);
y = xCD;
r = rxFilter(y, rolloff, span, sps);
+
+sps = 2;
+Tsamp = Tsamp * 4;
+
+
[rCDComp, CDCompkstart] = CDCompensation(r, D, lambda, z, Tsamp);
rCDComp = normalizeEnergy(rCDComp, numSymbs*sps, 1);
[rCDComp, CDCompkstart] = CDCompensation(r, D, lambda, z, Tsamp);
rCDComp = normalizeEnergy(rCDComp, numSymbs*sps, 1);
-rSampled = rCDComp(
sps*span/2+1:sps:(numSymbs+span/2)*sps
);
-rNoCompSa = r(
sps*span/2+1:sps:(numSymbs+span/2)*sps
);
+rSampled = rCDComp(
2:2:end
);
+rNoCompSa = r(
2:2:end
);
%% if no CD comp, then rotate constellation. Use:
theta = angle(-sum(rNoCompSa .^ M)) / M;
%% if no CD comp, then rotate constellation. Use:
theta = angle(-sum(rNoCompSa .^ M)) / M;
@@
-57,7
+62,6
@@
end
rSampled = rSampled .* exp(-1j * theta);
rSampled = rSampled .* exp(-1j * theta);
-
%%rAdaptEq = adaptiveCMA(rSampled);
%{
%% Compare original signal and compensated signal
%%rAdaptEq = adaptiveCMA(rSampled);
%{
%% Compare original signal and compensated signal