Channel allocation in OFDMA-based wireless ad-hoc networks

Gautam Kulkarni; Vijay Raghunathan; Mani B. Srivastava; Mario Gerla

doi:10.1117/12.453813

6 December 2002 Channel allocation in OFDMA-based wireless ad-hoc networks

Gautam Kulkarni, Vijay Raghunathan, Mani B. Srivastava, Mario Gerla

Proceedings Volume 4791, Advanced Signal Processing Algorithms, Architectures, and Implementations XII; (2002) https://doi.org/10.1117/12.453813
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Wireless ad hoc networks find great utility in situations where there is no wired base station infrastructure. For large networks wireless channel access needs to be performed in a distributed manner. Orthogonal Frequency Division Multiple Access (OFDMA) is an emerging multiple access technique that is used in several new networking technologies. In this paper we study the use of OFDMA for ad hoc networks. Each point-to-point link does not transmit over the entire band and uses a subset of the total number of available subcarriers. This enables flexible network resource management with the ability to vary the output link capacity depending on the traffic load. Specifically, we address the problem of subcarrier allocation for point-to-point links of ad hoc networks. We present a distributed algorithm for subcarrier allocation and compare its performance to a centralized graph-theoretic heuristic. The simulation results also show that our protocol is robust and scalable.

Citation Download Citation

Gautam Kulkarni, Vijay Raghunathan, Mani B. Srivastava, and Mario Gerla "Channel allocation in OFDMA-based wireless ad-hoc networks", Proc. SPIE 4791, Advanced Signal Processing Algorithms, Architectures, and Implementations XII, (6 December 2002); https://doi.org/10.1117/12.453813

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