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

@proceedings{citeulike:3497762, abstract = {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 is independently computed by each cooperating node, and which enables separation of the collided packets based on their final destination. The scheme requires that each node has global knowledge of the network coordinates. The proposed scheme can achieve high throughput, which in certain cases exceeds one.}, author = {Petropulu, A. P. and Dong, Lun and Poor, H. V.}, booktitle = {Information Sciences and Systems, 2007. CISS '07. 41st Annual Conference on}, citeulike-article-id = {3497762}, citeulike-linkout-0 = {http://dx.doi.org/10.1109/CISS.2007.4298434}, citeulike-linkout-1 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4298434}, doi = {10.1109/CISS.2007.4298434}, journal = {Information Sciences and Systems, 2007. CISS '07. 41st Annual Conference on}, keywords = {beamforming}, pages = {878--883}, posted-at = {2008-11-09 09:04:00}, priority = {2}, title = {A High-Throughput Cross-Layer Scheme for Distributed Wireless Ad Hoc Networks}, url = {http://dx.doi.org/10.1109/CISS.2007.4298434}, year = {2007} }

TY - CONF ID - citeulike:3497762 L3 - citeulike-article-id:3497762 N2 - 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 is independently computed by each cooperating node, and which enables separation of the collided packets based on their final destination. The scheme requires that each node has global knowledge of the network coordinates. The proposed scheme can achieve high throughput, which in certain cases exceeds one. JF - Information Sciences and Systems, 2007. CISS '07. 41st Annual Conference on EP - 883 TI - A High-Throughput Cross-Layer Scheme for Distributed Wireless Ad Hoc Networks T2 - Information Sciences and Systems, 2007. CISS '07. 41st Annual Conference on SP - 878 KW - beamforming AU - Petropulu, AP AU - Dong, Lun AU - Poor, HV PY - 2007/// UR - http://dx.doi.org/10.1109/CISS.2007.4298434 ER -