Jay

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Question

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...

23 days ago | 1 answer | 0

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answer

Question

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" ...

6 months ago | 2 answers | 0

2

answers

Question

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 ...

9 months ago | 2 answers | 0

2

answers

Question

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,...

12 months ago | 0 answers | 0

0

answers

Question

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...

1 year ago | 0 answers | 0

0

answers

Question

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 = ...

1 year ago | 1 answer | 0

1

answer

Question

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...

1 year ago | 1 answer | 0

1

answer

Question

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...

1 year ago | 1 answer | 0

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answer

Question

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...

1 year ago | 1 answer | 0

1

answer

Question

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: ...

1 year ago | 1 answer | 0

1

answer

Question

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...

1 year ago | 1 answer | 0

1

answer

Question

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. ...

1 year ago | 1 answer | 0

1

answer

Answered
CPFSK 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...

1 year ago | 0

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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...

1 year ago | 1 answer | 0

1

answer

Question

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...

1 year ago | 1 answer | 0

1

answer

Question

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...

1 year ago | 1 answer | 0

1

answer