Interest in SDR, DSP, adaptive algorithms, and embedded systems

Re: visual DSP++ generated .ldr file bootup issue

Reply posted 3 years ago (02/06/2019)
is this an eval kit? Try SPI PROM in the Project:Load:General settings:https://ez.analog.com/dsp/software-and-development...
little bit of an odd question the modem design is normally predetermined, i.e. you know the transmitters IFFT size. You also haven't provided any information on...

Re: OFDM Constellation.

Reply posted 3 years ago (09/25/2018)
Do you have any mix of bpsk and qpsk in the symbols? This could be caused by poor timingn synchronization. What is the input to the FFT of the training symbols? Also,...

Re: OFDM Constellation.

Reply posted 3 years ago (09/25/2018)
...

OFDM symbol timing Schmidl & Cox

New thread started 4 years ago
I'm implementing Schmidl and Cox in Matlab and attempting to recover the data being transmitted. However, I have a problem even with 0 carrier frequency offset,...
Not really seeing it. The$$X_{K}(K) G(w,K)$$ summation would be a point by point multiply. Essentially as they are increasing N they are 'zooming'(but not really) into...
Lol so this paper is just a very convoluted way of saying 'an N-point DFT much larger than the signal length, L, leads to better spectral resolution' ??Not very...
put your latex between double $$
Thats right G(w,k) falls out from what you have set up$$X(e^{jw}) = 1/N * \sum_{n=0}^{L-1} \sum_{k=0}^{N-1} X_N(k) e^{-j(w-2k/N)n}$$the geometric series of this...
How G(w,k) falls out of the substitution is still unclear to me. But G(w,k)'s function is basically to create a bandpass filter around a area of w in order to 'zoom'...

Re: M-to-2 Polyphase Decimation Channelizer

Reply posted 5 years ago (03/08/2017)
I think you're filtering wrong initially ...see page 19 of this thesis paper advised by fred harris who has written a lot of papers on channelizers and see how i...

Re: M-to-2 Polyphase Decimation Channelizer

Reply posted 5 years ago (03/07/2017)
here is an example of a 6-to-1 i implemented a while back where h1a is my FIR filter, and x is my input sequence. You're code was a little convoluted so i didnt...

Re: Data prediction in small embedded systems

Reply posted 5 years ago (03/07/2017)
This depends on what you're trying to predict. What is your data? For example if its a linear regression its not very computationally expensive...But you should...

Re: Interpolation and power

Reply posted 5 years ago (02/28/2017)
You will  need to scale your interpolation output by the interpolation factor...The gain is reduced by a factor of your interpolation

Re: CIC Filter

Reply posted 5 years ago (08/27/2016)
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