Error generating a psk modulation

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Rachana Aravind
Rachana Aravind 2019-7-4
回答： Samatha Aleti 2019-7-30
Hi,
I am trying this code
%%
% Set the random number generator to a known state to be able to regenerate
% the same frames every time the simulation is run
rng(123456)
% Random bits
d = randi([0 1],1024,1);
% BPSK modulation
syms = pskmod(d,2);
% Square-root raised cosine filter
filterCoeffs = rcosdesign(0.35,4,8);
tx = filter(filterCoeffs,1,upsample(syms,8));
% Channel
channel = helperModClassTestChannel(...
'SampleRate',1e8, ...
'SNR',20, ...
'PathDelays',[0 1.8 3.4] / 200e3, ...
'AveragePathGains',[0 -2 -10], ...
'KFactor',4, ...
'MaximumDopplerShift',4, ...
'MaximumClockOffset',5, ...
'CenterFrequency',900e6);
rx = channel(tx);
and getting the very last entry of the rx vector as Nan+NaNi
What is the reason? How to fix this problem?
Thanks for your help in advance.
  2 个评论
KALYAN ACHARJYA
KALYAN ACHARJYA 2019-7-4
编辑：KALYAN ACHARJYA 2019-7-4
@Rachana Matlab version, you are using?
Hello Memeber, it may be helpful to check, the question belongs from here

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采纳的回答

Samatha Aleti
Samatha Aleti 2019-7-30
In the class HelperModClassTestChannel the timing drift is calculated based on the clock offset for the current frame and specified sampling rate. The output of sampling time drift is the values of input at the modified sampling rate. This tried to interpolate data out of input range, leading to a NAN value.
Hope this helps!

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