Timeline for How is seen the BER of a BPSK DSSS?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 28, 2022 at 11:12 | comment | added | dsp_curious | You answered my question, thanks | |
| Nov 27, 2022 at 21:06 | comment | added | Dilip Sarwate | There is no dBm level at which the BER is $0$. At large SNR, the BER can be very small, but it never can be $0$. The presence or absence of DSSS makes no difference to this fact. The theoretical BER for a given $E_b/N_0$ ratio is the same whether you are using plain BPSK or BPSK with DSSS modulation. What DSSS changes is the bandwidth of the transmitted signal, and hence lowers the carrier-to-noise ratio. See also this answer. | |
| Nov 27, 2022 at 16:46 | comment | added | dsp_curious | If the BER starts to be null at a given dBm level without DSSS can I expect to go lower with it? | |
| Nov 27, 2022 at 16:29 | comment | added | Dilip Sarwate | The answer to the first question is "The same". For the second question, you need to tell us what you understand by the sensitivity level of the receiver. | |
| Nov 27, 2022 at 16:21 | history | asked | dsp_curious | CC BY-SA 4.0 |