Dimitris Komnakos

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The present paper studies the prospective and the performance of a forthcoming high-speed third-generation (3G) networking technology called High Speed Packet Access (HSPA) for delivering emergency m-health applications. The joint transmission of voice, real-time video, medical data such as electrocardiogram, vital signals, heart sound and file transfer is(More)
The present paper studies the prospective and the performance of a forthcoming high-speed third generation (3.5G) networking technology, called enhanced uplink, for delivering mobile health (m-health) applications. The performance of 3.5G networks is a critical factor for successful development of m-health services perceived by end users. In this paper, we(More)
The design, development and operation of a network for the monitoring of the nonionizing electromagnetic radiation in Greece is presented in this paper. Two independent sub-networks, called “Hermes” and “pedion24” have been operating since November 2002 in several areas, and more than 4,000,000 electric field strength measurements have been conducted to(More)
The present paper studies the prospective and the performance of a forthcoming high-speed third-generation (3.5G) networking technology, called Enhanced Uplink, in collaboration with the well known wireless sensor technology, for delivering electronic health (e-health) pervasive applications. The performance of the sensor network along with the 3.5G network(More)
This paper describes a wide-area tele-medicine platform, specially suited for homecare services, based on the DVBRCS and Wi-Fi communication technologies. Implementation of DVB-RCS, utilizing dynamic assignment techniques mandated in the DVB-RCS specification, has been specifically designed and tuned for multimedia and highspeed data transfer. The monitored(More)
The present paper studies the performance of a joint network comprised of a high-speed third-generation (3.5G) networking technology, HSPA (High Speed Packet Access), wireless sensors, and satellite network for delivering crisis management and emergency e-health applications under urgent situations via satellite backhauling. We propose an emergency system(More)
Enhanced Uplink operation of WCDMA-UMTS systems utilizes fast Node B scheduling and a short Transmission Time Interval (TTI) of 2ms. The scheduling decisions are based on scheduling information (SI) sent by each UE to the Node B. The main drawback of the current scheduling procedure is that the SI does not include any information regarding the delay(More)
Adaptive Radio Resource Allocation is essential for guaranteeing high bandwidth and power utilization as well as satisfying heterogeneous Quality-of-Service requests regarding next generation broadband multicarrier wireless access networks like LTE and Mobile WiMAX. A downlink OFDMA single-cell scenario is considered where heterogeneous Constant-Bit-Rate(More)
Enhanced Uplink operation of WCDMA-UMTS systems utilizes fast Node B scheduling and a short Transmission Time Interval (TTI) of 2ms. The scheduling decisions are based on Scheduling Information (SI) sent from each User Equipment (UE) to the Node B. The weakness of the existing scheduling framework is that the SI does not include information regarding the(More)