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2007
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A High-Throughput Cross-Layer Scheme for Distributed Wireless Ad Hoc Networks

10 years 1 months ago
A High-Throughput Cross-Layer Scheme for Distributed Wireless Ad Hoc Networks
— In wireless ad hoc networks, distributed nodes can collaboratively form an antenna array for long-distance communications to achieve high energy efficiency. In recent work, Ochiai, et al., have shown that such collaborative beamforming can achieve a statistically nice beampattern with a narrow main lobe and low side lobes. However, the process of collaboration introduces significant delay, since all collaborating nodes need access to the same information. In this paper, a technique that significantly reduces the collaboration overhead is proposed. It consists of two phases. In the first phase, nodes transmit locally in a random access fashion. Collisions, when they occur, are viewed as linear mixtures of the collided packets. In the second phase, a set of cooperating nodes acts as a distributed antenna system and beamform the received analog waveform to one or more faraway destinations. This step requires multiplication of the received analog waveform by a complex number, which...
Athina P. Petropulu, Lun Dong, H. Vincent Poor
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where CISS
Authors Athina P. Petropulu, Lun Dong, H. Vincent Poor
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