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Results tagged with fsk
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user 64158
Frequency Shift Keying - A digital transmission technique in which a "1" is represented by one frequency and a "0" by another. It is the digital equivalent of FM.
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What to use as "frequency error" when determining appropriate bandwidth for 2FSK?
Your consideration regarding the frequency error is correct; the uncertainty of the reference oscillator's frequency gets scaled by the same factor as its frequency to the carrier.
So, you have an unc …
- 100k
4
votes
FSK demodulation using DSP
There's a lot of approaches for decoding FSK. Zero-crossing detection will be pretty sensitive to noise.
At these low rates, you don't have to worry. … You can simply have one filter for each of your FSK symbol frequencies, and push through your receive signal, then have a conversion from value to magnitude², and a maximum-based decider. …
- 100k
1
vote
How can find the bandwidth of the transmitted M-FSK signal?
The author confuses "\$M\$-tone Frequency Shift Keying" (M-FSK) with "Minimum Frequency Shift Keying" (MSK). These are two different things. … In all literature I could find¹, MSK is defined as a 2-FSK with a \$\Delta f= \frac{R_s}{2}\$ spacing. …
- 100k
1
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Accepted
Modulate a digital message using FSK/PSK combination
Technically, FSK receivers are not anymore inherently easier to build than PSK receivers; the same is true for transmission. … So, FSK is just something that you find pretty rarely in modern systems – it's spectrally inefficient and hard to build. …
- 100k
0
votes
Why frequency deviation in BLE 1Msym is different than BLE 2Msym?
You cut out the important part of the standard that specifies which frequency deviation we're talking about here!
Let's look at the specs from the top. The modulation index being ca. 0.5 means that F …
- 100k