Actually what we are trying to implement using the FPGA is already there in DSP Processor, but what matters is the portability and the size reduction of the final product by implementing some functionality of DSP using FPGA, this way one will be able to reduce the use of DSP in many designs, but the real disadvantage of this method is it totally depends hardware dependent.
Thanks Nic, that is my motto, be wise enough to know that in no way we can master the universe alone, but each of us should attempt to make the universe much friendlier place to everyone. Specially new commers to engineering.
There are lots of complexities and tough problems in the world, and nothing is gained by been destructive.
no offence but "For example, a low performance DSP function that is part of a sensor or motor control system need not be implemented in a stand alone DSP device. An FPGA might be the right solution in this case." doesn't make sense to me, if it's low performance you go down the performance chain, not up it. So one would consider a general micro-controller with it's obvious advantages.
If only one would have to do FIR filters only…? Fact is the software stack is more complicated and it is really a pain to do it on an FPGA. For radar, some high end medical applications it might be a good choice.. For many , many applications it is a pain, try to get a solution certified for some automotive and avionics applications and you will see.
COuldn't the same be said in the other direction?, if there are other considerations more suitable for a DSP processor then the tilt can be as well move the other direction.
In my opinion, it has to be a case by case decision of the designer, given a set of resources and time constraints.
Just another point of view
It is too easy to critisize and rush to jugment in haste, when it is so easy to offer the correction of such typo that appears in many publications that are transcribed by non-technical people.
Simply stating the transgression in this case that the index coefficients are transposed for the constatnt term and the discrete variable term, would have accomplished more and been more informative to others that may not have see this simple transgression. Article as good merits otherwise, in my opinion.