MSc Mathematics

## Phase difference and TDoA in a localization system (acoustic)

My question concerns on the accuracy of the localization system which relies on measuring the TDoA of the signal using 4 beacons spaced between 20 m (SBL for underwater...

## Re: Carrier Recovery, Frequency and Phase in (CP)FSK

Thanks to u Kaz, for your effort. 1- Yes, i think, because all the data are buffered and latter transmitted. So i suppose all the data are correctly transmitted. 2....

## Re: Carrier Recovery, Frequency and Phase in (CP)FSK

Kaz, thanks again for ur reply and patience. For a non dsp guy some concepts are hard to follow, unfortunately. Below i describe my system so far so maybe provides...

## Re: Carrier Recovery, Frequency and Phase in (CP)FSK

Thanks Kaz. Can you please provide an example where a shifting in phase occurs even if the sampling clocks are stable. I was thinking for an example like this: ...

## Re: Carrier Recovery, Frequency and Phase in (CP)FSK

Thanks Kaz, For the first point i have to make sure that the both of the system perform the requested sampling rate.This can cause me a frequency shift. I dont...

## Re: Carrier Recovery, Frequency and Phase in (CP)FSK

Yes you are right, more precisely underwater comms in which speed of sound is greater.But yet mulitpath is still present and a big issue. We  used to put some pause...

## Re: Carrier Recovery, Frequency and Phase in (CP)FSK

Hello Katz,thanks again. In practice my system is wireless, communication between two laptops using acoustic waves. What i do at the transmitter is to generate a...

## Re: Carrier Recovery, Frequency and Phase in (CP)FSK

Hi Kaz,Thanks for the reply. Onestly i dont correctly understand what do u mean by reomote comms. Tx and Rx can run in different platforms, e.g., pc and embedded...

## Carrier Recovery, Frequency and Phase in (CP)FSK

Hi folks,I wanted to ask what exactly is meant for phase recovery of signal (at least intuitively). I have a working example of an acoustic fsk modulation and demodulation...

## Re: FSK demodulation and SNR measurements

Thank you very much Tim,You mean more than one sample per bit period for SNR calculation, or preamble detection. Currently i have some miss-understanding how the...

## Re: FSK demodulation and SNR measurements

Thank you very much for your prompt response. What does the "oversampled" means and how can be archived. If using fsk autocorrelation for detection I think it...

## FSK demodulation and SNR measurements

Hi all,First of all i am not a DSP guy, so forgive in advance for any mistake i may made describing my scenario. Currently i have implemented an FSK modulator/ demodulator...

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