An experimental study of network performance impact of increased latency in software defined radios
Proceedings of the second ACM international workshop on Wireless network testbeds, experimental evaluation and characterization
Experimental investigation of cooperative schemes on a real-time DSP-based testbed
EURASIP Journal on Wireless Communications and Networking - Special issue on cooperative communications in wireless networks
Distributed transmit beamforming: challenges and recent progress
IEEE Communications Magazine
Cooperative network implementation using open-source platforms
IEEE Communications Magazine
Distributed transmit beamforming using feedback control
IEEE Transactions on Information Theory
Implementation and evaluation of cooperative communication schemes in software-defined radio testbed
INFOCOM'10 Proceedings of the 29th conference on Information communications
Time-Slotted Round-Trip Carrier Synchronization for Distributed Beamforming
IEEE Transactions on Signal Processing
On the Feasibility of Distributed Beamforming in Wireless Networks
IEEE Transactions on Wireless Communications
The capacity of wireless networks
IEEE Transactions on Information Theory
Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks
IEEE Transactions on Information Theory
Hierarchical Cooperation Achieves Optimal Capacity Scaling in Ad Hoc Networks
IEEE Transactions on Information Theory
Coordinated multipoint: Concepts, performance, and field trial results
IEEE Communications Magazine
Two-Way Synchronization for Coordinated Multicell Retrodirective Downlink Beamforming
IEEE Transactions on Signal Processing
Hi-index | 0.00 |
We describe the key ideas behind our implementation of distributed beamforming on a GNU-radio based software-defined radio platform. Distributed beamforming is a cooperative transmission scheme whereby a number of nodes in a wireless network organize themselves into a virtual antenna array and focus their transmission in the direction of the intended receiver, potentially achieving orders of magnitude improvements in energy efficiency. This technique has been extensively studied over the past decade and its practical feasibility has been demonstrated in multiple experimental prototypes. Our contributions in the work reported in this paper are three-fold: (a) the first ever all-wireless implementation of distributed beamforming without any secondary wired channels for clock distribution or channel feedback, (b) a novel digital baseband approach to synchronization of high frequency RF signals that requires no hardware modifications, and (c) an implementation of distributed beamforming on a standard, open platform that allows easy reuse and extension. We describe the design of our system in detail, present some initial results and discuss future directions for this work.