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[davefowler1987]

Good Evening all.

I am currently in the process of designing a Soft Decision 16 QAM (quadrature amplitude modulation) for a DVB-T system.

I am looking to take two 8 bit inputs (x and y coordinates) and find out how far it is from another location (fixed point). This creates a triangle, hence my desire for Pythagoras.

Is this possible in VHDL (realistically)?

Regards

Dave

[aloque]

try pipelined CORDIC on Vector mode or search for another type of decision strategy.

[JohnDuq]

You can feed the two 8-bit values into a 16-bit look up table and get your answer out.