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generateUserSettingsExample1.py
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generateUserSettingsExample1.py
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from userSettingsObjects import simulationSettings, valueWithLimits
from math import sqrt, pow
# Example of using a pre-defined pulse response
def generateUserSettings() -> simulationSettings:
simSettings = simulationSettings()
########################################
# General settings
########################################
# Frequency
simSettings.general.symbolRate.value = 41.6e9 # symbol rate [S/s] (or 2x frequency [Hz])
# Signaling mode ('standard','1+D','1+0.5D','clock')
simSettings.general.signalingMode = 'standard'
# Modulation (M-PAM)
simSettings.general.modulation.value = 4
# Resolution
simSettings.general.samplesPerSymb.value = 100 # horizontal resolution
simSettings.general.yAxisLength.value = 601 # vertical resolution (must be odd)
# General display
simSettings.general.numbSymb.value = 2 # number of symbols to plot
simSettings.general.contLevels.value = 10 # number of contour levels
# Target BER
simSettings.general.targetBER.value = 1e-6 # used for measurement purposes
# Display responses
simSettings.general.plotting.channelResponse = False
simSettings.general.plotting.CTLEResponse = False
simSettings.general.plotting.pulseResponse = True
# Display inteferences
simSettings.general.plotting.jitterSource = True
simSettings.general.plotting.noiseSource = True
simSettings.general.plotting.distortionSource = True
# Display probability distributions
simSettings.general.plotting.ISI = False # CAREFUL: CAN BE SLOW TO PLOT!
simSettings.general.plotting.PDFInitial = False
simSettings.general.plotting.PDFCrossTalk = False
simSettings.general.plotting.PDFDistorted = False
simSettings.general.plotting.PDFJitter = False
simSettings.general.plotting.PDFNoise = False
simSettings.general.plotting.PDFFinal = True
# Display bit-error rate distributions
simSettings.general.plotting.BER = False # plot BER contour over BER
simSettings.general.plotting.BER2 = True # plot BER contour over PDF
# Display measurement results
simSettings.general.plotting.results = True
########################################
# Adaption settings
########################################
# Run adaption algorithm
simSettings.adaption.adapt = False
# Adaption complexity
simSettings.adaption.totalParents.value = 2
simSettings.adaption.childrenPerParent.value = 10
simSettings.adaption.totalMutations.value = 2
simSettings.adaption.mode1Generations.value = 20 # coarse adjustment
simSettings.adaption.mode2Generations.value = 55 # fine adjustment
# Define knobs to optimize
simSettings.adaption.knobs = ['transmitter.EQ.taps.pre1',\
'transmitter.EQ.taps.post1',\
'receiver.preAmp.gain',\
'receiver.CTLE.zeroFreq',\
'receiver.CTLE.pole1Freq',\
'receiver.FFE.taps.pre2',\
'receiver.FFE.taps.pre1',\
'receiver.FFE.taps.main',\
'receiver.FFE.taps.post1',\
'receiver.FFE.taps.post2',\
'receiver.DFE.taps.post1',\
'receiver.DFE.taps.post2']
########################################
# Transmitter settings
########################################
# Maximum amplitude [V]
simSettings.transmitter.signalAmplitude.value = 1.0
# Add source impedance (drop amplitude by half)
simSettings.transmitter.includeSourceImpedance = True
# Rise/fall time [s]
simSettings.transmitter.tRise.value = 1e-12
# TX bandwidth [Hz]
simSettings.transmitter.TXBandwidth.value = 30e9
# Impulse cursor length
simSettings.transmitter.preCursorCount.value = 2
simSettings.transmitter.postCursorCount.value = 4
# Pre-emphasis
simSettings.transmitter.EQ.addEqualization = False
simSettings.transmitter.EQ.taps.pre3 = valueWithLimits(-0.00)
simSettings.transmitter.EQ.taps.pre2 = valueWithLimits(-0.00)
simSettings.transmitter.EQ.taps.pre1 = valueWithLimits(-0.00)
simSettings.transmitter.EQ.taps.main = valueWithLimits( 1.00) # calculated automatically
simSettings.transmitter.EQ.taps.post1 = valueWithLimits(-0.00)
simSettings.transmitter.EQ.taps.post2 = valueWithLimits(-0.00)
simSettings.transmitter.EQ.taps.post3 = valueWithLimits(-0.00)
simSettings.transmitter.EQ.taps.post4 = valueWithLimits(-0.00)
simSettings.transmitter.EQ.taps.post5 = valueWithLimits(-0.00)
# Jitter
simSettings.transmitter.jitter.addJitter = False
simSettings.transmitter.jitter.stdDeviation.value = 0 # TX random jitter standard diviation [UI]
simSettings.transmitter.jitter.amplitude.value = 0 # TX deterministic jitter amplitude [UI]
simSettings.transmitter.jitter.DCD.value = 0 # TX duty-cycle distortion jitter [UI]
# Noise
simSettings.transmitter.noise.addNoise = False
simSettings.transmitter.noise.stdDeviation.value = 0 # TX random noise standard diviation [V]
simSettings.transmitter.noise.amplitude.value = 0 # TX deterministic noise amplitude [V]
simSettings.transmitter.noise.frequency.value = 1e6 # TX deterministic noise frequency [Hz]
# Distortion
simSettings.transmitter.distortion.addDistortion = False
simSettings.transmitter.distortion.fileName = 'distortionTX.mat'
########################################
# Channel settings
########################################
# Apply channel/cross-talk
simSettings.channel.addChannel = False
simSettings.channel.addCrossTalk = False
# Add notch (must update transfer function)
simSettings.channel.addNotch = False
simSettings.channel.notchFreq.value = 20e9 # frequency of notch
simSettings.channel.notchAttenuation.value = 20 # attenuation at notch [dB]
# Add pulse response (convolve all channels with additional transfer function, must update transfer function)
simSettings.channel.modelCircuitTF = False
simSettings.channel.modelCircuitTFName = 'FrontendTransferFunction.mat'
# Override channel pulse response (must have same over-sampling frequency)
simSettings.channel.overrideResponse = True
simSettings.channel.overrideFileName = 'FrontEndPulseResponse.mat'
# Approximate cross-talk to speed up simulation
simSettings.channel.approximate = True
# Make cross-talk channels asynchronous
simSettings.channel.makeAsynchronous = True
# Channel file names
simSettings.channel.fileNames.thru = 'FrontendTransferFunction.mat'
# Noise
simSettings.channel.noise.addNoise = False
simSettings.channel.noise.noiseDensity.value = 5.2e-17 # channel noise density [V^2/Hz]
########################################
# Receiver settings
########################################
# Maximum amplitude [V]
simSettings.receiver.signalAmplitude.value = 0.2
# PreAmp
simSettings.receiver.preAmp.addGain = True
simSettings.receiver.preAmp.gain.value = 1.5
# CTLE
simSettings.receiver.CTLE.addEqualization = False
simSettings.receiver.CTLE.zeroFreq.value = 19.0e9 # frequency of first zero [Hz]
simSettings.receiver.CTLE.zeroNumb.value = 1 # number of zeros
simSettings.receiver.CTLE.pole1Freq.value = 19.0e9 # frequency of first pole [Hz]
simSettings.receiver.CTLE.pole1Numb.value = 1 # number of first poles
simSettings.receiver.CTLE.pole2Freq.value = 30.0e9 # frequency of additional poles [Hz]
simSettings.receiver.CTLE.pole2Numb.value = 3 # number of additional poles
# FFE
simSettings.receiver.FFE.addEqualization = True
simSettings.receiver.FFE.taps.pre3 = valueWithLimits(-0.00)
simSettings.receiver.FFE.taps.pre2 = valueWithLimits(-0.00)
simSettings.receiver.FFE.taps.pre1 = valueWithLimits(-0.00)
simSettings.receiver.FFE.taps.main = valueWithLimits(-0.00)
simSettings.receiver.FFE.taps.post1 = valueWithLimits( 1.00)
simSettings.receiver.FFE.taps.post2 = valueWithLimits( 0.10)
simSettings.receiver.FFE.taps.post3 = valueWithLimits(-0.00)
simSettings.receiver.FFE.taps.post4 = valueWithLimits(-0.00)
simSettings.receiver.FFE.taps.post5 = valueWithLimits(-0.00)
# DFE
simSettings.receiver.DFE.addEqualization = False
simSettings.receiver.DFE.taps.post1 = valueWithLimits(-0.00)
simSettings.receiver.DFE.taps.post2 = valueWithLimits(-0.00)
simSettings.receiver.DFE.taps.post3 = valueWithLimits(-0.00)
simSettings.receiver.DFE.taps.post4 = valueWithLimits(-0.00)
simSettings.receiver.DFE.taps.post5 = valueWithLimits(-0.00)
# Jitter
simSettings.receiver.jitter.addJitter = True
simSettings.receiver.jitter.stdDeviation.value = 0.01 # CDR random jitter standard diviation [UI]
simSettings.receiver.jitter.amplitude.value = 0 # CDR deterministic jitter amplitude [UI]
simSettings.receiver.jitter.DCD.value = 0 # CDR duty-cycle distortion jitter [UI]
# Noise
simSettings.receiver.noise.addNoise = True
simSettings.receiver.noise.stdDeviation.value = 0.0042 # RX random noise standard diviation [V]
simSettings.receiver.noise.amplitude.value = 0 # RX deterministic noise amplitude [V]
simSettings.receiver.noise.frequency.value = 1e6 # RX deterministic noise frequency [Hz]
# Distortion
simSettings.receiver.distortion.addDistortion = False
simSettings.receiver.distortion.fileName = 'distortionRX.mat'
return simSettings