A low power 8 x 8 direct 2-D DCT chip design

This paper presents the design and implementation of a low power 8 x 8 2-D DCT chip based on a computation-effective algorithm. Computational complexity can be reduced by simplifying the direct 2-D algorithm. Thus, the low power consumption is achieved due to complexity reduction. Besides, the parallel distributed-arithmetic (DA) technique is used to realize constant multiplication due to the low-power consideration. Additionally, the 2 V-power supply is practiced in circuit implementation for now and future battery operated applications. By using the TSMC 0.6 mum single-poly double-metal technology, 133 mW power consumption at 100 MHz and the 133 MHz maximum operation speed are achieved by critical path simulation.