Directional-Element Adaptive Array Antenna for Mobile Reception of Digital Terrestrial Television

摘要

This paper proposes the use of directional-element adaptive array antennas on the reception of terrestrial digital television broadcasting (DTTB) in vehicles. Firstly the paper evaluates the mobile receiving quality of DTTB of Post-FFT-type OFDM adaptive array antenna consisting of omni-directional- and directional-element with computer simulation and confirms that similar performance to omni-directional-element adaptive array antenna can be achieved with the use of directional-element adaptive array antenna. Secondly, the paper shows that remarkable performance improvement can be achieved in directional-element adaptive array antenna mobile reception by the application of Doppler dispreading. The paper also confirms that allocating directional elements on the front and the rear sides of the vehicle instead of the left and right sides, gives better receiving quality.