A Novel Approach for Signed, Unsigned Truncated Multiplier Based on HSCG-SCG CSLA Adder

  • Usthulamuri Penchalaiah, Siva Kumar VG


In recent years of technology advancement, applications such as audio processing, signal processing, SDR and so on, in light of sign preparing and picture handling, can work with elite effectiveness and are exceptionally compactable as far as area. In digital signal processing systems, which use all types of gadgets, there may be more signal noises and fluctuations. In addition, because of the arithmetic operation of Adders and Multiplier Architecture, these applications occupy larger areas in VLSI implementation. Here, the proposed advanced method intends to design a facile technique of FIR filter by restoring adders and multipliers to the proposed signed and unsigned Truncation Multiplier and HSCG-SCG adders. In this approximate partial reduction of products, the structure of truncation multiplier will have a number of the adders. This proposed work also attempts to replace these adders to HSCG-SCG method. This proposed design will reduce the number of logic gates in arithmetic operation of multiplication, addition and also proves efficient in signed and unsigned methods of signal processing applications. Finally, this proposed HSCG-SCG-based FIR filter will be designed in VHDL with the assist of Xilinx FPGA-S6LX9. Consequently, the achievement efficacy of this presented FIR filter with truncation multiplier and HSCG-SCG adder in comparison with multiple of CSLA (Carry Select Adder) proves much higher with regard to delay, power, and area.

Keywords-  Half Sum Carry Generation; Sum Carry Selection; FPGA; FIR filter; Area.