8-PSK simulink simulation

Started by Giovanni Marino January 23, 2008
I am simulating a 8-PSK modulation in simulink. I am working in base-band,
for this reason I obtain a complex number like exp(i*pi/4*k), for each clock
period. I want to Upsampling this complex signal, in order to limit the
signal bandwith and after I want to filter it with an SRRC (suqre root raise
cosin), before sending it in my channel. Well, my problem is that I get
this error from simulink: "Error reported by S-function 'sdspupsamp2' in
Continuous sample times not allowed." I didn't understand why I get this
message. Can you help me?
Thank you in advance
Giovanni Marino

blog: http://agx1groma.splinder.com/