# BER plot using matlab

1. May 2, 2010

### McMurry

[PLAIN]http://img100.imageshack.us/img100/702/bersimulationresult.jpg [Broken]

I run a simulation on matlab, and obtain the plot above.
The red and green line is using BPSK and QPSK modulation, while the blue line is using 8psk modulation.

My questions are:
(a) is it true that BPSK and QPSK BER performance is almost identical?
(b) why is the line plot from matlab stop at 9 and 10 for BPSK and QPSK modulation eventhough both have same parameter like 8psk (except for the parameter M)? any way i can adjust it?

Last edited by a moderator: May 4, 2017