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Proceedings Paper

Channel allocation in OFDMA-based wireless ad-hoc networks
Author(s): Gautam Kulkarni; Vijay Raghunathan; Mani B. Srivastava; Mario Gerla
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Paper 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.

Paper Details

Date Published: 6 December 2002
PDF: 10 pages
Proc. SPIE 4791, Advanced Signal Processing Algorithms, Architectures, and Implementations XII, (6 December 2002); doi: 10.1117/12.453813
Show Author Affiliations
Gautam Kulkarni, Univ. of California/Los Angeles (United States)
Vijay Raghunathan, Univ. of California/Los Angeles (United States)
Mani B. Srivastava, Univ. of California/Los Angeles (United States)
Mario Gerla, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 4791:
Advanced Signal Processing Algorithms, Architectures, and Implementations XII
Franklin T. Luk, Editor(s)

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