Conjugate Complex 4-bit Multiplier, Dedicated Multipliers

Block: Conjugating Complex 4-bit Multiplier Implemented in
Dedicated Multipliers. (cmult_4bit_em*)
Block Author: ?
Document Author: Vinayak Nagpal

Contents

Summary
Mask Parameters
Ports
Description

Summary

Perform a conjugating complex multiplication (a + bi)(c − di) = (ac + bd) + (bc − ad)i. Implements the logic in dedicated multipliers.

Mask Parameters

Parameter	Variable	Description
Multiplier Latency	mult_latency	The latency through a multiplier.
dd Latency	add_latency	The latency through an adder.

Ports

Port	Dir	Data Type	Description
a	in	Inherited	The real component of input 1.
b	in	Inherited	The imaginary component of input 1.
c	in	Inherited	The real component of input 2.
d	in	Inherited	The imaginary component of input 2.
real	out	Inherited	ac+bd
imag	out	Inherited	-ad+bc

Description

Perform a conjugating complex multiplication (a + bi)(c − di) = (ac + bd) + (bc − ad)i. Implements the logic in dedicated multipliers. Each 4 bit real multiplier is implemented as a lookup table with 4b+4b=8b of address.