TTW
Newbie level 2
Hi I am an undergraduate student , currently i am doing 1 project
about design a QAM 16 modulator.
I had found a souce code in verilog format about the modulator .
But i failed to compile it in NC simulator ( cadence ) and cant
synthesis it in PKS ( cadence )
Any one can help me or provide me other source code that
can be synthesis in VHDL or verilog format ?
I think that most probably is the source code prob. not my tools' prob.
Thanks a lot .
Below is the source code :
module qam16(in,out);
input [0:3] in;
output out;
voltage in,out;
parameter real freq = 1.0 from (0:inf);
parameter real ampl = 1.0, thresh = 2.5;
parameter real tdelay = 0 from [0:inf),
ttransit = 1/freq;
real x,y,phi;
integer row,col;
analog
begin
row = 2*(V(in[3]) > thresh + V(in[2]) > thresh);
col = 2*(V(in[1]) > thresh + V(in[0]) > thresh);
x = transition(row-1.5,tdelay,ttransit);
y = transition(col-1.5,tdelay,ttransit);
phi = 2 * `M_PI * freq * $realtime();
V(out) <+ ampl * (x * cos(phi) + y * sin(phi));
end
endmodule
about design a QAM 16 modulator.
I had found a souce code in verilog format about the modulator .
But i failed to compile it in NC simulator ( cadence ) and cant
synthesis it in PKS ( cadence )
Any one can help me or provide me other source code that
can be synthesis in VHDL or verilog format ?
I think that most probably is the source code prob. not my tools' prob.
Thanks a lot .
Below is the source code :
module qam16(in,out);
input [0:3] in;
output out;
voltage in,out;
parameter real freq = 1.0 from (0:inf);
parameter real ampl = 1.0, thresh = 2.5;
parameter real tdelay = 0 from [0:inf),
ttransit = 1/freq;
real x,y,phi;
integer row,col;
analog
begin
row = 2*(V(in[3]) > thresh + V(in[2]) > thresh);
col = 2*(V(in[1]) > thresh + V(in[0]) > thresh);
x = transition(row-1.5,tdelay,ttransit);
y = transition(col-1.5,tdelay,ttransit);
phi = 2 * `M_PI * freq * $realtime();
V(out) <+ ampl * (x * cos(phi) + y * sin(phi));
end
endmodule