# Tagged Questions

Questions relating to the rate at which bits are transmitted over a channel (wired or wireless). Usually specified in bits/s or a multiple of that unit. Related but not the same as baud rate or symbol rate.

4answers
348 views

### Nyquist theorem, seems wrong to me

For Nyquist theorem, for channels without noise the bit rate is: $N=2B\log_2(L)$ N= bit rate, B= bandwidth, L= number of levels Intuitively I say that it should be: ...
3answers
285 views

### Why a high number of harmonics means a lower bitrate?

I am studying on a book (I'm still at basics) and I haven't understood why a signal with a lower number of harmonics implies a low bit rate. I have this figure: It clearly shows how a signal with ...
2answers
499 views

### SPI: effective payload throughput per clock tick?

Let's say I'm clocking a SPI bus at 30 MHz. What payload throughput can I actually expect? 30 Mbps, or less? (E.g. are high overheads imposed by pauses, control packets, packet headers, packet ...
1answer
3k views

### Wireless Audio Transmitter

I am working on a project that will digitize an audio signal from a standard RCA jack and transmit that signal using Bluetooth to a receiver and then convert it back to an analog signal which I will ...
3answers
373 views

### 9bits/signal element, what's the bandwidth?

If I encode 9bits/signal element, what is the minimum required bandwidth of the channel in Hertz? With the information that 9bits/signal element, is it possible to find its bit rate or any other ...