Help to verify this 8PSK modulation

[McMurry]

Homework Statement

I used MATLAB to perform simulation on 8psk modulation, and this is the result i obtained. I would need your help to help me to verify whether the result I obtained is valid.
Thanks.

[PLAIN]http://img132.imageshack.us/img132/8124/8pskverification.jpg

Homework Equations

The Attempt at a Solution

 

[McMurry]

Anyone?

 

[poor mystic]

i guess this just aint a very interesting question