A Comparison of Different Fixed Width Multipliers Based On MLCP
International Journal of Science and Research (IJSR) · 2015
The fixed-width multiplier is attractive to many multimedia and digital signalprocessing systems which are desirable to maintain a fixed format and allow a little accuracy loss to output data.This brief includes a comparative study of different fixed-width Booth multipliers-PT(most accurate fixed width multiplier) and DT(least area requirement) fixed width multipliers with the Proposed accuracy-adjustment fixed-width Booth multipliers that compensates the truncation error using a multilevel conditional probability (MLCP) estimator.To consider the trade-off between accuracy and area cost, the MLCPprovides varying column information to adjust the accuracy with respect to system requirements.Unlike previous conditional-probability methods, the proposed MLCP uses entire nonzero code, namely MLCP, to estimate the truncation error and achieve higher accuracy levels.And a comparative study of different fixed width multipliers based on MLCP using differentfast adders such as carry look ahead adder, Kogge-stone adder etc are also included.The design was modeled using Verilog, simulated and synthesized using Xilinx ISE 14.7.