In this paper, the authors discuss the emergence of new technologies related to the topic of the highspeed packet data access in wireless networks. The authors propose an algorithm for MIMO systems that optimizes the number of the transmit antennas according to the user’s QoS. Scheduling performance under two types of traffic modes is also discussed: one is voice or web-browsing and the other i...

UMTS provides a new and important feature allowing negotiation of the property of the radio bearer. We have focused on data transmission in WCDMA systems using packet scheduling for DCH and DSCH, in case when voice, video streaming and WWW services are engaged. Network exploiting the DCH and DSCH as a data transport channels can provide higher throughput than a network without DSCH, if a good c...

This paper presents an extension to the ePresence Interactive Media webcasting infrastructure to support real-time voice and video conferencing for a few attendees while concurrently streaming an event to many others. We emphasize the tools for enhancing awareness of the remote attendees in the lecture hall or seminar room, and for facilitating communication between remote attendees and the lec...

This work contributes to demonstrate what perceptual benefits can be expected by adding some processing capabilities to the network nodes for the class of interactive audio streaming applications. In particular, we propose a new voice stream multi-flow block interleaver and we show that it provides an intelligibility performance very close to the reference end-to-end interleaver, even under con...

-Steganography is the hiding of a secret message within an ordinary message and the extraction of secret message at its destination. In digital steganography, electronic communications may include steganographic coding inside of a transport layer, such as a document file, image file, program or protocol. This paper describes how to segregate the audio that are streaming in the Voice over Intern...

One of the most successful WLAN protocols is IEEE 802.11. That is due to the simplicity and robustness against failures of its medium access control protocol. In addition, IEEE introduces the standard 802.11e for quality of service support. However, this standard is not considered efficient when used for some applications that don’t involve data and background in the transmission, but only voic...

Home Automation industry is growing rapidly; this is fuelled by provide supporting systems for the elderly and the disabled, especially those who live alone. Coupled with this, the world population is confirmed to be getting older. Home automation systems must comply with the household standards and convenience of usage. This paper details the overall design of a wireless home automation system...

Rate Control plays an key role for many multimedia services such as streaming applications. These streaming applications such as video on demand (VoD) or voice over IP (VoIP) services face some critical problems such as insufficient bandwidth and improper performance of transmission protocols. Emerging real-time multimedia services over IP grow fast with the advent of advanced broadband communi...

Providing a high-quality service for transmission and playing real-time voice conversations (voice streaming) over wireless ad-hoc networks is no mean feat. Buffering together with adjusting the playout time of the packets is a receiver-side solution to overcome this challenge. In this paper, a new adaptive playout adjustment algorithm is proposed to stream the voice conversations over wireless...

Voice over Internet Protocol (VoIP) has grown quickly in the world of telecommunication. Wireless Local Area Networks (WLANs) are the most performance assuring technology for wireless networks, and WLANs have facilitated high-rate voice services at low cost and good flexibility. In a voice conversation, each client works as a sender or a receiver depending on the direction of traffic flow over ...