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Simulators >> System Simulators >> 4 bit multiplier in simulink
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Message started by c1000 on Mar 3^rd, 2009, 5:04am

Title: 4 bit multiplier in simulink
Post by c1000 on Mar 3^rd, 2009, 5:04am

I am modelling transmitter using simulink.
for the digital system, I need full adder and multiplier for 4bit input signals. but i didnt find any blocksets for it.
should I use the "bit operator" to form the full adder, 4bit adder, 4bit multiplier by myself?
I just want to avoid unnecessary effort.

Title: Re: 4 bit multiplier in simulink
Post by pancho_hideboo on Mar 3^rd, 2009, 5:13am

Use Fixed_to_Int and add as multiply and then Int_to_Fixed.

Title: Re: 4 bit multiplier in simulink
Post by c1000 on Mar 3^rd, 2009, 5:21am

sorry, i dont catch you....
i dont need to bulid those models like real circuits?
could you explain it in detail?
Thank you very much!!!
a little urgent for me....

Title: Re: 4 bit multiplier in simulink
Post by pancho_hideboo on Mar 3^rd, 2009, 5:27am

c1000 wrote on Mar 3^rd, 2009, 5:21am:

sorry, i dont catch you....

How degree do you know signal processing simulator such as Simulink(MATLAB), Ptolemy, SystemVue, SPW(CoWare Signal Processing Designer, SPD), etc. ?

c1000 wrote on Mar 3^rd, 2009, 5:21am:

i dont need to bulid those models like real circuits?

You don't have to bulid as real circuits.
Each block have output data type setting.
And there is Data Type Conversion Block in "Simulink/Signal_Attributes".

Title: Re: 4 bit multiplier in simulink
Post by c1000 on Mar 3^rd, 2009, 6:00am

I am a beginner for simulink
so easy to get confused...
that's why i need detailed explanation, sorry...
i need to multiply the output of adc (4 bit or 8bit ) and then subtract one by one.

Title: Re: 4 bit multiplier in simulink
Post by pancho_hideboo on Mar 3^rd, 2009, 5:14pm

c1000 wrote on Mar 3^rd, 2009, 6:00am:

I am a beginner for simulink

What tool are you familiar with ?

c1000 wrote on Mar 3^rd, 2009, 6:00am:

i need to multiply the output of adc (4 bit or 8bit ) and then subtract one by one.

Use ideal DAC and ideal ADC.