SPACE-TIME CODING AND PROCESSING TO IMPROVE RADIO COMMUNICATION COVERAGE FROM HIGH ALTITUDE PLATFORMS (HAPs) - AN APPROACH
نویسندگان
چکیده
In this work, Space-Time Block Coding (STBC) applied to improve performance of High Altitude Platforms (HAPs) for radio links is analysed. The communications scenario considers an aeronautical channel similar to the land mobile satellite channel model proposed in [6] which offers for medium and low angles of elevation from the ground station (worse coverage case) favourable multipath conditions to exploit space-time coding. BER performance evaluations are achieved by Monte Carlo simulations, assuming two transmit and receive antennae with uncorrelated multipath signals and QPSK modulation. The results show that significant transmit and receive diversity gains can be achieved, specially for urban zones with low LOS signal.
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