Unequal decoding power allocation for efficient video transmission

Abstract

We present an unequal decoding power allocation (UDPA) approach for minimization of the receiver power consumption subject to a given quality of service (QoS), by exploiting data partitioning and turbo decoding. We assign unequal decoding power of forward error correction (FEC) to data partitions with different priority by jointly considering the source coding, channel coding and receiver power consumption. The proposed scheme is applied to H.264 video over additive white Gaussion noise (AWGN) channel, and achieves excellent tradeoff between video delivery quality and power consumption, and yields significant power saving compared with the conventional equal decoding power allocation (EDPA) approach in wireless video transmission.

Numerical Simulation of 3D Flow in Rotation Cup of Rotor Spinning

“…In rotor spinning, the single fibers obtained by opening cotton sliver are transferred into rotation cup through fiber transfer channel under the effect of airflow, then they slip into accumulation groove on the slip plane under the effect of centrifugal force of high-speed rotating rotation cup and airflow, and ultimately they gather to be fiber sliver and form yarns [1]. The airflow plays an important part in the spinning process.…”