An Efficient AOA Estimation Scheme Based on Cyclic Pilot Symbols for Positioning of Mobile Objects in Indoor Environments

Abstract

The conventional AOA estimation schemes assume multiple antennas, which usually causes high-cost estimation systems. More-over, the schemes are very vulnerable to multi-path interferences. In this letter, a novel scheme is proposed for the efficient AOA estimation. The scheme is based on cyclic pilot symbols, which guarantees the use of a single antenna and the robustness over multi-path interferences.