Capacity evaluation with different access schemes for aeronautical communications

In the practical application, the Air-Ground (A/G) aeronautical communications are deployed in three dimensions (3D), which makes the different capacity evaluation from the terrestrial communications, e. g. 3G and 4G. Especially, different access schemes will result in different system capacities. In this paper, the system capacities for A/G communications with the access scheme of FDMA, TDMA, CDMA and OFDMA are analyzed and evaluated. Moreover, due to the 3D property of A/G communications, the fractional frequency reuse is employed to increase the capacity. The analytical result predicts the broadband A/G communications with CDMA and OFDM transmissions.

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