Communications_Engineer
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So Mathuranathan, you are generating bits at a particular data-rate by choosing a sampling frequency (rather, I think an oversampling factor) and the output will be the over sampled version (bit oversampled)
Am I correct?
(I ignore the mapping part and consider my self generating bits).
Matlab is non-real time and does not 'really' implement things with a proper sample time, I guess we have to take the smallest sample time (highest sample-rate) in our system and kind of over-sample all other signals (data,bits,symbols) to match the sample-rate of the that signal (highest sample-rate one).
Do you agree?
I think in his book "Simulation and Software Radio", Dr. Ramjee Prasad also uses oversampling to implement the symbol rate. Although I can state this without doubt after having another look at it.
My way of implementing is that I consider, natural/default sample-time to be what I desire. Since, sample time would not have any difference on BER under AWGN (assuming oversampling is not used, correct me if I'm wrong) but when I generate a Multi-path channel, I define the CIR as the anti-symmetric impulse response of an FIR filter where the coeffs have amplitude equal to the loss in the multipath signal while the taps represent the delays for each of them.
What do you say?
Am I correct?
(I ignore the mapping part and consider my self generating bits).
Matlab is non-real time and does not 'really' implement things with a proper sample time, I guess we have to take the smallest sample time (highest sample-rate) in our system and kind of over-sample all other signals (data,bits,symbols) to match the sample-rate of the that signal (highest sample-rate one).
Do you agree?
I think in his book "Simulation and Software Radio", Dr. Ramjee Prasad also uses oversampling to implement the symbol rate. Although I can state this without doubt after having another look at it.
My way of implementing is that I consider, natural/default sample-time to be what I desire. Since, sample time would not have any difference on BER under AWGN (assuming oversampling is not used, correct me if I'm wrong) but when I generate a Multi-path channel, I define the CIR as the anti-symmetric impulse response of an FIR filter where the coeffs have amplitude equal to the loss in the multipath signal while the taps represent the delays for each of them.
What do you say?