iosr-JVSP   Volume-9 ~ Issue-3 ~ May-June 2019

ABSTRACT: In this work we have compared the voltage-mode and current-mode amplifier using IC LM675 and IC AD844 respectively for gain and bandwidth relationship. Further we have presented a new CFOA based on CCCII and AD844. We have used translinear loop and current mirrors with low supply voltage. This circuit is operated at low supply voltage of 1V with bandwidth (-3dB) of 106 MHz at value of Rx as 50. This CFOA is verified as Inverting amplifier. We have introduced a DC current injection technique at node X which reduces Rx further, which increases gain and bandwidth(-3dB) up to 24.12 dB and 169 MHz respectively with the injection current of 600 A. Hspice simulation for TSMC 0.18 m CMOS technology is presented..

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ABSTRACT: The use of coding tree units instead of macroblocks in HEVC increases the coding efficiency while increasing computational complexity. Early termination for coding units at depth level and skipping computations at prediction units called fast mode decision provides a significant contribution to reducing computational complexity in HEVC. In this work, a detailed comparison process is performed by examining the fast inter-mode decision algorithms developed for HEVC.

 

Keywords: Coding tree units, computational complexity, HEVC, inter-mode decision

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