Performance of OFDM in high-mobility environments

Robert D. Thrasher; Gregory J. Pottie

doi:10.1117/12.512229

24 December 2003 Performance of OFDM in high-mobility environments

Proceedings Volume 5205, Advanced Signal Processing Algorithms, Architectures, and Implementations XIII; (2003) https://doi.org/10.1117/12.512229
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

This paper focuses on communications within a high-mobility context with OFDM as the modulation of choice. We first show that the Air-to-Ground (AtG) channel is the most difficult to adapt using standard channel equalization methods. We then derive a new channel model (AtGMM) for the AtG case and use it as the basis for analysis and for simulating the effects within the AtG environment. Next, we derive the optimal channel-estimation-based equalizer for the AtG channel; showing performance equivalent to a comparable time-invariant channel. We then analyze the performance of conventional OFDM-based systems using the AtGMM channel model and provide guidelines to maximizing the throughput within differing mobility contexts.

Citation Download Citation

Robert D. Thrasher and Gregory J. Pottie "Performance of OFDM in high-mobility environments", Proc. SPIE 5205, Advanced Signal Processing Algorithms, Architectures, and Implementations XIII, (24 December 2003); https://doi.org/10.1117/12.512229

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