Dear All
I used the CRC-N Syndrome Detector model on the simulink. The
question is even the message has not the error, the Err port appear 1
when syndrome has the error. So how can I measure or know how much
bit error in this simulation??

Richard Chiou wrote:
> Dear All
> I used the CRC-N Syndrome Detector model on the simulink. The
> question is even the message has not the error, the Err port appear 1
> when syndrome has the error. So how can I measure or know how much
> bit error in this simulation??

You count bit errors by using the Error Rate Calculation block from the 
Communication Sinks library.  You give the block the transmitted and 
received sequences, and it computes the error rate.

HTH,
Idin Motedayen-Aval
The MathWorks

Idin Motedayen-Aval wrote:
>
>
> Richard Chiou wrote:
>> Dear All
>> I used the CRC-N Syndrome Detector model on the simulink. The
>> question is even the message has not the error, the Err port
> appear 1
>> when syndrome has the error. So how can I measure or know how
> much
>> bit error in this simulation??
>
> You count bit errors by using the Error Rate Calculation block from
> the
> Communication Sinks library. You give the block the transmitted
> and
> received sequences, and it computes the error rate.
>
> HTH,
> Idin Motedayen-Aval
> The MathWorks
>
Thanks
In this way one can know error probability, but has the ERR port a
relationshiop with error probabilty? If I consider different
N(syndrome bits) value, how to measure its detected ability?