EURASIP Journal on Wireless Communications and Networking
International Journal of Network Management
A cross-layer transmission scheduling scheme for wireless sensor networks
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Space-Time Cooperation Diversity Using High-Rate Codes
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Cooperative multibeamforming in ad hoc networks
EURASIP Journal on Advances in Signal Processing
EURASIP Journal on Advances in Signal Processing
Linear relaying for the Gaussian multiple-access and broadcast channels
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Single and multiple relay selection schemes and their achievable diversity orders
IEEE Transactions on Wireless Communications
Network beamforming using relays with perfect channel information
IEEE Transactions on Information Theory
Distributed transmit beamforming: challenges and recent progress
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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
Opportunistic relaying in wireless networks
IEEE Transactions on Information Theory
A simple distributed antenna processing scheme for cooperative diversity
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When do non-regenerative two-hop relaying networks require a global phase reference?
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Bandwidth and power allocation for cooperative strategies in Gaussian relay networks
IEEE Transactions on Information Theory
Distributed transmit beamforming using feedback control
IEEE Transactions on Information Theory
A game theoretical approach to node partitioning in multi source-destination relay networks
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
Optimal throughput of two-hop relay networks with different relay cooperation
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Throughput scaling of wireless networks with random connections
IEEE Transactions on Information Theory
Cooperative transmission for wireless relay networks using limited feedback
IEEE Transactions on Signal Processing
Joint receive-transmit beamforming for multi-antenna relaying schemes
IEEE Transactions on Signal Processing
EURASIP Journal on Wireless Communications and Networking
| Hi-index | 755.14 |
We consider the power efficiency of a communications channel, i.e., the maximum bit rate that can be achieved per unit power (energy rate). For additive white Gaussian noise (AWGN) channels, it is well known that power efficiency is attained in the low signal-to-noise ratio (SNR) regime where capacity is proportional to the transmit power. In this paper, we first show that for a random sensory wireless network with n users (nodes) placed in a domain of fixed area, with probability converging to one as n grows, the power efficiency scales at least by a factor of √n. In other words, each user in a wireless channel with n nodes can support the same communication rate as a single-user system, but by expending only 1/√n times the energy. Then we look at a random ad hoc network with n relay nodes and r simultaneous transmitter/receiver pairs located in a domain of fixed area. We show that as long as r≤√n, we can achieve a power efficiency that scales by a factor of √n. We also give a description of how to achieve these gains.