This document specifies a Real-time Transport Protocol (RTP) payload format to be used for Adaptive Multi-Rate (AMR) and Adaptive MultiRate Wideband (AMR-WB) encoded speech signals. The payload format is designed to be able to interoperate with existing AMR and AMR-WB transport formats on non-IP networks. In addition, a file format is specified for transport of AMR and AMR-WB speech data in sto...

Abstract This work aims to assess the necessary power for a tethered high-altitude unmanned airborne platform, in which propulsion system and payload are powered from ground-based cable source. A summary solution of differential equations given describe spatial position its action on platform gust conditions. The mass including payload, effect wind resistance taken into account when calculating...

The CHASE satellite is designed based on the novel ultra-high pointing accuracy and stability levitated-body platform, which breaks traditional idea of rigidly connecting platform payload. When operating in orbit, payload are non-connected spatially levitated. By separately arranging “noisy” “quiet” devices, complicated influence vibration direction effectively avoided. Using master-slave colla...

Steganography is art of invisible Communication. It strives to hide the existence of communicated message in appropriate medium i.e. Image, Audio or Video. So as not to arouse an eavesdropper’s suspicion. Various techniques with Objectives of robustness, Payload and Undetectability are available and have their respective pros and cons. Various Steganography Techniques are employed depending on ...

This paper presents a novel image hiding method that utilizes a two-way block-matching procedure to search for the highest-similarity block for each block of the important image. The bases and indexes obtained together with some not-well-matched blocks are recorded in the least significant bits of the cover image using a hop scheme. The method exhibits a high data payload, which reduces the sto...

The conventional reversible data hiding (RDH) algorithms often consider the host as a whole to embed a payload. In order to achieve satisfactory rate-distortion performance, the secret bits are embedded into the noise-like component of the host such as prediction errors. From the rate-distortion view, it may be not optimal since the data embedding units use the identical parameters. This motiva...

Autonomous outdoor quad-rotor helicopters increasingly attract the attention of potential researchers. Several structures and configurations have been developed to allow 3D movements. The quadrotor helicopter is made of a rigid cross frame equipped with four rotors. The autonomous quad-rotor architecture has been chosen for this research for its low dimension, good manoeuvrability, simple mecha...

www.ijarcet.org 1866  Abstract— Spectrum scarcity is one of the most critical recent problems in the field of wireless communication. One of the promising approaches to resolve this issue is the use of Cognitive Radio technique. CR technique is performed by Secondary User (SU) to utilize the spectrums more efficiently. SU transmission mode can be broadly divided into two modes: interference av...