Ιδρυματικό Αποθετήριο [SANDBOX]
Πολυτεχνείο Κρήτης
EN  |  EL

Αναζήτηση

Πλοήγηση

Ο Χώρος μου

Reachback WSN connectivity: Non-coherent zero-feedback distributed beamforming or TDMA energy harvesting?

Bletsas Aggelos, Alexandris Konstantinos, Sklivanitis Georgios

Πλήρης Εγγραφή


URI: http://purl.tuc.gr/dl/dias/83560A96-05E4-4FAA-B9B7-D87EA686A429
Έτος 2014
Τύπος Δημοσίευση σε Περιοδικό με Κριτές
Άδεια Χρήσης
Λεπτομέρειες
Βιβλιογραφική Αναφορά K. Alexandris, G. Sklivanitis and A. Bletsas, "Reachback WSN Connectivity: Non-coherent Zero-Feedback Distributed Beamforming or TDMA Energy Harvesting?", IEEE Transactions on Wireless Communications, vol. 13, no. 9, pp. 4923 – 4934, Sept. 2014. DOI: 10.1109/TWC.2014.2330295 https://doi.org/10.1109/TWC.2014.2330295
Εμφανίζεται στις Συλλογές

Περίληψη

This work is motivated by the reachback connectivity scenario in resource-constrained wireless sensor networks (WSNs): a single terminal at maximum power cannot establish a reliable communication link with the intended destination. Thus, neighboring distributed transmitters should contribute their radios and transmission power, in order to achieve reliable transmission of a common message. This work is particularly interested in low-SNR scenarios with unreliable feedback channels, no channel state information (CSI), and commodity radios, where carrier phase/frequency synchronization is not possible. Concrete non-coherent maximum likelihood and energy detection receivers are developed for zero-feedback distributed beamforming. The proposed receivers are compared with non-coherent energy harvesting reception, based on simple time-division multiple access. It is shown that the proposed zero-feedback distributed beamforming receivers overcome connectivity adversities at the low-SNR regime. This is achieved by exploiting signals' alignment of M distributed transmitters (i.e., beamforming), even with commodity radios, at the expense of network (total) power consumption. Application scenarios include resource-constrained WSNs or emergency radio situations.

Υπηρεσίες

Στατιστικά