التفاصيل البيبلوغرافية
| العنوان: |
A Distributed Scheduling Algorithm for Underwater Acoustic Networks With Large Propagation Delays. |
| المؤلفون: |
Zeng, Huacheng1, Hou, Y. Thomas2, Shi, Yi2, Lou, Wenjing2, Kompella, Sastry3, Midkiff, Scott F.2 |
| المصدر: |
IEEE Transactions on Communications. Mar2017, Vol. 65 Issue 3, p1131-1145. 15p. |
| مصطلحات موضوعية: |
*DATA transmission systems, *MANAGEMENT, ELASTIC wave propagation, OCEANOGRAPHIC observations, MATHEMATICAL models of underwater acoustics, DISTRIBUTED algorithms |
| مستخلص: |
Underwater acoustic (UWA) networks are a key form of communications for human exploration and activities in the oceanographic space of the earth. A fundamental issue of UWA communications is large propagation delays due to water medium, which has posed a grand challenge in UWA network protocol design. Conventional wisdom of addressing this issue is to live with this disadvantage by inserting a guard interval to introduce immunity to propagation delays. Recent advances in interference alignment (IA) open up a new direction to address this issue and promise a great potential to improve network throughput by exploiting large propagation delays. In this paper, we investigate propagation delay-based IA (PD-IA) in multi-hop UWA networks. We first develop a set of simple constraints to characterize PD-IA feasible region at the physical layer. Based on the set of PD-IA constraints, we develop a distributed PD-IA scheduling algorithm to greedily maximize interference overlapping possibilities in a multi-hop UWA network. Simulation results show that the proposed PD-IA algorithm yields higher throughput than an idealized benchmark algorithm without propagation delays, indicating that large propagation delays are not adversarial but beneficial for network throughput performance. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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