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ICDCSW
2006
IEEE
9 years 7 months ago
On the Use of Nodes with Controllable Mobility for Conserving Power in MANETs
We explore the idea of using relay nodes with controllable mobility as intermediate hops for reducing the power consumption in a mobile ad hoc network (MANET). We formulate the re...
Eashwar R. Chittimalla, Aravindhan Venkateswaran, ...
GLOBECOM
2006
IEEE
9 years 7 months ago
Cooperative Relay Networks Using Fountain Codes
We investigate a cooperative communications scheme with N parallel relays, where both the transmissions from the source to the relays and from the relays to the destination use fo...
Andreas F. Molisch, Neelesh B. Mehta, Jonathan S. ...
GLOBECOM
2006
IEEE
9 years 7 months ago
Outage Performance of Cognitive Wireless Relay Networks
— In this paper, we investigate the outage performance of cognitive wireless relay networks where source nodes communicate to their destinations via multiple hops facilitated by ...
Kyounghwan Lee, Aylin Yener
VTC
2007
IEEE
9 years 7 months ago
Improving Energy Consumption in Ad Hoc Networks through Prioritization
—Energy is a major concern in ad hoc networks as it dictates the lifetime of a terminal and consequently the whole network. In an ad hoc network, not all terminals are equally sol...
Olfa Bouattay, Tijani Chahed, Mounir Frikha, Sami ...
ICMCS
2007
IEEE
115views Multimedia» more  ICMCS 2007»
9 years 7 months ago
Time-Aware Opportunistic Relay for Video Streaming Over WLANs
Robust video streaming over time-varying, error-prone wireless LANs (WLANs) poses many challenges. In this paper, we present a Time-based Opportunistic Relay (TOR) scheme for high...
Mei-Hsuan Lu, Peter Steenkiste, Tsuhan Chen
ICC
2007
IEEE
9 years 7 months ago
Transmit Optimization for Relay-Based Cellular OFDMA Systems
Abstract—This paper considers a broadband cellular orthogonal frequency-division multiple-access (OFDMA) system with relay nodes operating in decode-and-forward and half-duplex m...
Wooseok Nam, Woohyuk Chang, Sae-Young Chung, Yong ...
GLOBECOM
2007
IEEE
9 years 7 months ago
Synchronization-Aware Distributed Space-Time Codes in Wireless Relay Networks
— In this paper, we consider the design of synchronization-aware distributed space-time codes, which we denote as diagonal distributed space-time codes (DDSTC), for N relay nodes...
Karim G. Seddik, Ahmed K. Sadek, Ahmed S. Ibrahim,...
WCNC
2008
IEEE
9 years 7 months ago
Distributed Space-Frequency Coding over Amplify-and-Forward Relay Channels
Abstract— In this paper, the design of distributed spacefrequency codes (DSFCs) for wireless relay networks employing the amplify-and-forward (AAF) protocol is considered. The te...
Karim G. Seddik, K. J. Ray Liu
VTC
2008
IEEE
153views Communications» more  VTC 2008»
9 years 7 months ago
Symbol Error Rate of Space-Time Coded Multi-Antenna Wireless Cooperative Networks
—In this paper, we propose a generalized cooperative signal transmission model for wireless networks. In this model, the source, the destination, and an arbitrary number of relay...
Javad Vazifehdan, Jos H. Weber
SAINT
2008
IEEE
9 years 7 months ago
Dynamic Relay Node Placement in Wireless Sensor Networks
In this paper we present an online algorithm that attacks the problem of placing relay nodes in regions where high localized congestion is detected. Congestion refers to the netwo...
Jorge Mena, Vana Kalogeraki
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