IEEE 2015 VLSI AN ACCURACY-ADJUSTMENT FIXED-WIDTH BOOTH MULTIPLIER BASED ON MULTILEVEL.pptx

1
AN ACCURACY-ADJUSTMENT FIXED-WIDTH BOOTH
MULTIPLIER BASED ON MULTILEVEL CONDITIONAL
PROBABILITY
2
ABSTRACT

• In this paper, a reliable low-powermultiplier
  design is proposed by adopting algorithmic noise
  tolerant (ANT)architecture with the ?xed-width
  multiplier to build the reducedprecision replica
  redundancy block (RPR). The proposed
  ANTarchitecture can meet the demand of high
  precision, low powerconsumption, and area
  ef?ciency. We design the ?xed-width RPRwith error
  compensation circuit via analyzing of probability
  andstatistics.

3

• Using the partial product terms of input
  correctionvector and minor input correction
  vector to lower the truncationerrors, the
  hardware complexity of error compensation
  circuitcan be simpli?ed. In a 12 12 bit ANT
  multiplier, circuitarea in our ?xed-width RPR can
  be lowered by 44.55 andpower consumption in our
  ANT design can be saved by 23 ascompared with
  the state-of-art ANT design.

4
EXISTING METHODS

• 1. An aggressive low-power technique, referred to
  as voltageoverscaling (VOS), to lower supply
  voltage beyond critical supply voltage without
  sacri?cing the throughput. However, VOS leads to
  severe degradationin signal-to-noise ratio (SNR).
• 2. RPR technique in the ANT design can operate
  fastly, but their hardware implementation is too
  complex.

5
PROPOSED METHOD

• The ?xed-width RPR is proposed to replace the
  full-width RPR block. Using the ?xed-width RPR,
  the computation error canbe corrected with lower
  power consumption and lower areaoverhead. In
  order not to increasethe critical path delay, the
  compensation circuit is restricted and the RPR
  must not be located in the critical path. As a
  result, the ANT design with smaller circuit area,
  lowerpower consumption, and lower critical supply
  voltage is obtained.The ANT technique includes
  both main digitalsignal processor (MDSP) and
  error correction (EC) block.

6
(No Transcript)
7
ADVANTAGES

• 1. Reduces the area
• 2. Reduces the power