Now showing items 1-20 of 278
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Energy-aware cooperative content distribution over wireless networks: Design alternatives and implementation aspects
( IEEE , 2013 , Article)This paper presents a comprehensive overview on the area of energy-aware common content distribution over wireless networks with mobile-to-mobile cooperation. It is assumed that a number of mobile terminals (MTs) that are ... -
Resource Allocation in Uplink OFDMA Wireless Systems: Optimal Solutions and Practical Implementations
( John Wiley and Sons , 2012 , Book)Tackling problems from the least complicated to the most, Resource Allocation in Uplink OFDMA Wireless Systems provides readers with a comprehensive look at resource allocation and scheduling techniques (for both single ... -
A survey on uplink resource allocation in OFDMA wireless networks
( IEEE , 2012 , Article Review)OFDMA has been selected as the multiple access scheme for state-of-the-art wireless communication systems. Efficient resource allocation in OFDMA wireless networks is essential in order to meet the quality of service ... -
A Nash bargaining solution for energy-efficient content distribution over wireless networks with mobile-to-mobile cooperation
( IEEE , 2011 , Conference)A game theoretical formulation for energy minimization in mobile-to-mobile cooperative networks is provided. The problem is formulated as a Nash bargaining game, and the Nash bargaining solution is derived. Furthermore, a ... -
A channel-aware reservation protocol for cooperative content distribution over OFDMA networks
( IEEE , 2011 , Conference)In this paper, a channel aware resource reservation protocol for content distribution in an OFDMA wireless network with mobile-to-mobile cooperation is presented. The proposed approach consists of a reservation phase and ... -
A cooperative multihop approach for energy efficient wireless content distribution
( VDE VERLAG GMBH , 2012 , Conference)Cooperative content distribution for the purpose of energy minimization is investigated in the framework of multihop wireless networks. Mobile terminals cooperate to receive content of common interest from the base station ... -
An OFDMA communication protocol for wireless sensor networks used for leakage detection in underground water infrastructures
( IEEE , 2011 , Conference)In this paper, an application of wireless sensor networks for leakage detection in underground water pipes is considered. A mobile sensor immersed in the water pipe is assumed to communicate with relay nodes on the ground ... -
Enhancing the performance of OFDMA underlay cognitive radio networks via secondary pattern nulling and primary beam steering
( IEEE , 2011 , Conference)Cognitive radio networks are receiving a lot of research attention lately. Most user equipment in state-of-the-art wireless communication systems are equipped with two antennas. In this paper, we take advantage of the two ... -
Novel time-frequency reservation Aloha scheme for OFDMA systems
( IEEE , 2011 , Conference)A novel reservation Aloha scheme is presented for OFDMA systems. The proposed scheme is based on two dimensional reservation in time and frequency. The proposed approach is compared to other OFDMA extensions of reservation ... -
Beam and RB allocation in LTE uplink with opportunistic beamforming
( IEEE , 2011 , Conference)Opportunistic beamforming is investigated in the context of multicell LTE uplink resource allocation. A scheduling algorithm based on beam and resource block (RB) allocation with opportunistic beamforming is presented. ... -
A utility minimization approach for energy-aware cooperative content distribution with fairness constraints
( Associazione Elettrotecnica ed Elettronica Italiana , 2012 , Article)Cooperation between mobile terminals (MTs) with the objective of energy minimization is studied. The purpose is to distribute a content of common interest to collaborating MTs while ensuring a reduced energy consumption. ... -
A novel distributed scheduling scheme for OFDMA uplink using channel information and probabilistic transmission
( Elsevier , 2011 , Conference)Distributed uplink scheduling in OFDMA systems is considered. In the proposed model, mobile terminals have the responsibility of making their own transmission decisions. The proposed scheme is based on two dimensional ... -
On real-time video streaming over LTE networks with mobile-to-mobile cooperation
( IEEE , 2012 , Conference)Real-time video streaming over LTE networks is investigated in the presence of mobile-to-mobile collaboration. Mobiles are grouped into collaborative clusters using a low-complexity clustering algorithm. In each cluster, ... -
Green communications in LTE networks with environmentally friendly small cell base stations
( IEEE , 2012 , Conference)Green communications in LTE networks with environmentally friendly small cell base stations (BSs) are investigated. An approach to reassign mobile users to different LTE BSs is proposed. The objective is to achieve energy ... -
Cooperative relay-based multicasting for energy and delay minimization
( IEEE , 2012 , Conference)Relay-based multicasting for the purpose of cooperative content distribution is studied. Optimized relay selection is performed with the objective of minimizing the energy consumption or the content distribution delay ... -
Delay efficient cooperation in public safety vehicular networks using LTE and IEEE 802.11p
( IEEE , 2012 , Conference)Cooperative schemes for critical content distribution over vehicular networks are presented and analyzed. The first scheme is based on unicasting from the base station, whereas the second is based on threshold based ... -
Performance study of the implementation of green communications in LTE networks
( IEEE , 2012 , Conference)The application of green communications to LTE networks is analyzed. An approach to reassign mobile users to different LTE BSs is proposed. The objective is to achieve energy savings by switching off lightly loaded BSs ... -
Distributed Load Balancing through Self Organisation of cell size in cellular systems
( IEEE , 2012 , Conference)Uneven traffic load among the cells increases call blocking rates in some cells and causes low resource utilisation in other cells and thus degrades user satisfaction and overall performance of the cellular system. Various ... -
Call admission control with resource reservation for multi-service OFDM networks
( IEEE , 2012 , Conference)In OFDM wireless networks, the radio resources are assigned to the users based on their quality of service needs and depending on their channel quality. Thus, during a call session, the bandwidth requirements and needed ... -
On the performance of distributed base stations in LTE public safety networks
( IEEE , 2012 , Conference)Distributed base stations are studied in the framework of LTE public safety networks. In the proposed model, users are connected to remote radio heads deployed throughout the cell and connected to a central base station. ...