Survey on Comparison of Booth, Karatsuba and Vedic Multiplier.

The usages of wireless biomedical equipment’s are increasing day by day. Most of them are battery-powered and compact in size. The size of these devices is getting smaller and smaller. Moreover that the demand for high-speed devices is also increasing. In that aspect, our aim is to reduce the size and power consumption of the system. In most of the medical equipment the digital signal processing (DSP) block is inevitable. In general, the DPS’s in a system board will be one of the highly power hungry modules. So if we reduce the power of that unit will reduce the power on the entire unit. High processing speeds can be achieved only by heavy pipelining and massive parallelization of the circuits inside the DSP block. DSP blocks consist of program and data memory units, ALU, Multipliers, data registers and shifter. Apart from other modules, it is the multiplier which contributes significantly to the critical path. So the selection of multiplier is very important for such DSP applications. The paper deals with an in-depth analysis of different multipliers. Different parameters such as device utilization, delay etc are compared to select an apt multiplier for DSP applications. Design have coded in verilog HDL and synthesized in xilinx ISE 14.2. Implemented on FPGA spartan6