Interperf '06 Proceedings from the 2006 workshop on Interdisciplinary systems approach in performance evaluation and design of computer & communications sytems
Computer Networks: The International Journal of Computer and Telecommunications Networking
Optimal energy-efficient pair-wise cooperative transmission scheme for WiMax mesh networks
IEEE Journal on Selected Areas in Communications - Special issue on broadband access networks: Architectures and protocols
Alternating opportunistic large arrays in broadcasting for network lifetime extension
IEEE Transactions on Wireless Communications
Multicasting in large random wireless networks: bounds on the minimum energy per bit
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
IEEE Transactions on Communications
Fast flooding using cooperative transmissions in wireless networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Investigating multiple alternating cooperative broadcasts to enhance network longevity
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Downlink power distribution in a wireless CDMA network with cooperative relaying
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Energy efficient cooperative broadcasting in wireless networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Randomized parity forwarding in large-scale cooperative broadcast network
IEEE Transactions on Communications
Cooperative wireless multicast: performance analysis and power/location optimization
IEEE Transactions on Wireless Communications
Minimum energy per bit for wideband wireless multicasting: performance of decode-and-forward
INFOCOM'10 Proceedings of the 29th conference on Information communications
OLA with transmission threshold for strip networks
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Analysis of a simple recruiting method for cooperative routes and strip networks
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Repetition-based cooperative broadcasting for vehicular ad-hoc networks
Computer Communications
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A fundamental problem in large scale wireless networks is the energy efficient broadcast of source messages to the whole network. The energy consumption increases as the network size grows, and the optimization of broadcast efficiency becomes more important. In this paper, we study the optimal power allocation problem for cooperative broadcast in dense large-scale networks. In the considered cooperation protocol, a single source initiates the transmission and the rest of the nodes retransmit the source message if they have decoded it reliably. Each node is allocated an-orthogonal channel and the nodes improve their receive signal-to-noise ratio (SNR), hence the energy efficiency, by maximal-ratio combining the receptions of the same packet from different transmitters. We assume that the decoding of the source message is correct as long as the receive SNR exceeds a predetermined threshold. Under the optimal cooperative broadcasting, the transmission order (i.e., the schedule) and the transmission powers of the source and the relays are designed so that every node receives the source message reliably and the total power consumption is minimized. In general, finding the best scheduling in cooperative broadcast is known to be an NP-complete problem. In this paper, we show that the optimal scheduling problem can be solved for dense networks, which we approximate as a continuum of nodes. Under the continuum model, we derive the optimal scheduling and the optimal power density. Furthermore, we propose low-complexity, distributed and power efficient broadcasting schemes and compare their power consumptions with those-of-a traditional noncooperative multihop transmission