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Question
Which spectrum (pwelch vs. spectrumAnalyzer) is correct?
I have two data which I want to see difference in frequency domain. I tried with pwelch function which shows they are quite clos...
7 mois il y a | 1 réponse | 0
0
réponseQuestion
Shows "vertcat error" in CIC
I had a vertcat error while using a CIC filter. It seems that's because y is a row vector. Once I changed y to a column vector l...
8 mois il y a | 1 réponse | 0
1
réponseQuestion
FIR filter decomposition (single rate)?
I have a long single rate FIR filter. Due to a hardware limitation, I want to decompose it into two or more cascaded FIR filters...
8 mois il y a | 1 réponse | 0
1
réponseQuestion
Filter cascade with raised cosine filter and half-band filter
I've created a raised cosine filter and a half-band filter, respectively, and want to cascade them. However, I got "Numeric stag...
10 mois il y a | 1 réponse | 0
1
réponseQuestion
How to get LUT values from the NCO object?
I'm trying to learn NCO and MATLAB has the following example. df = 0.05; % Frequency resolution = 0.05 Hz minSFDR = 96; % Spur...
11 mois il y a | 1 réponse | 0
1
réponseQuestion
Number of bits per symbol (m) range in Reed-Solomon coding
I'm playing around with Reed-Solomon codes. In the parameters of rsenc, help shows m represents the "number of bits per symbol" ...
plus d'un an il y a | 2 réponses | 0
2
réponsesQuestion
Update a value in a struct in another function
I have a struct which is initialized by this: function myStruct = defult_config myStruct.myLenth = 1; end myStruct.myLength ...
plus d'un an il y a | 2 réponses | 0
2
réponsesQuestion
How do I know how the output of FIR filter were calculated (e.g., each of summands of the FIR)?
For a given set of FIR coefficient b and input data input, I generate FIR output using filter function (e.g., output = filter(b,...
presque 2 ans il y a | 1 réponse | 0
1
réponseQuestion
CIC compensation filter design
I have a CIC filter as below: Decimation factor: 20 Differential Delay: 1 Number of sections: 4 I created cicDecim object by...
presque 2 ans il y a | 1 réponse | 0
0
réponseQuestion
How to do a Biquad (SOS) filtering
I have the following filters which I want to implement with cascade of multiple second-order sections (SOS). %% Filter_1 h = ...
presque 2 ans il y a | 1 réponse | 0
1
réponseQuestion
convert decimal to hex with 3 digit
I just realized that converting -30 to hexadecial by dec2hex(-30) is different from its converting back by hex2dec('E2'). Any su...
environ 2 ans il y a | 1 réponse | 0
1
réponseQuestion
The location of decimated sample in CIC Decimator?
In a CIC Decimator, which sample is chosen among others? For example, here is the original input. input = [x1 x2 x3 x4 x5 x6 x7...
environ 2 ans il y a | 1 réponse | 0
1
réponseQuestion
The first CIC Decimator output is always zero
It seems that the first CIC Decimator output is always zero and I don't understand its behavior. I generated the input data and...
environ 2 ans il y a | 1 réponse | 0
1
réponseQuestion
CIC decimation output is strange (Output word length and negative fractional length)
I'm implementing fixed point CIC decimation filter with following requirements -- Decimation factor: 20 Number of CIC stages: ...
environ 2 ans il y a | 1 réponse | 0
1
réponseQuestion
Magnitude response of allpass filter - group-delay equalization of an IIR filter
In iirgrpdelay help page, the following example was provided for a group delay equalization of an IIR filter: [be,ae] = ellip(4...
environ 2 ans il y a | 1 réponse | 0
1
réponseQuestion
Converting 4th order IIR filter to SOS (second-order sections)
I've designed 4th order allpass IIR filter using 'iirgrpdelay' and have the numerator and denominator which are 1-by-5 vectors. ...
environ 2 ans il y a | 1 réponse | 0
1
réponseCPFSK demodulator performance in MATLAB example with enabling modulation index
This is self-answering - I found the reason why the error rates are strange other than "modulation index" of 0.5. CPFSKDemodulat...
plus de 2 ans il y a | 0
| A accepté
Question
CPFSK demodulator performance in MATLAB example with enabling modulation index
I've been checking CPFSK performance against various modulation indices and SNR. MATLAB has nice examples in comm.CPFSKModulat...
plus de 2 ans il y a | 1 réponse | 0
1
réponseQuestion
Number of filter taps in Gaussian filter design
Hello, I'm desinging a pulse shaping filter where the filter covers a span of 5 inputs symbols and 12 times of input symbol r...
plus de 2 ans il y a | 1 réponse | 0
1
réponseQuestion
Oversampling factor parameter for fsk modulation with gaussian shaping filter
Hello, I have been playing around with fskmod with gaussdesign (e.g., fsk modulation and filtering with a gaussian shaping filt...
plus de 2 ans il y a | 1 réponse | 0
