Abstract
In the conventional beamforming-based transmitting scheme for a multiple-input single-output (MISO) system, many transmitting antennas are usually required. In this paper, a direction of arrival (DOA) based spatial focusing scheme for a 2 × 1 MISO system is proposed. This 2 × 1 MISO system, can be employed for local or indoor communications, requires only one single and two antennas at the mobile station and the base station respectively. In the system, orthogonal-frequency-division-multiplexing (OFDM) is employed for the uplink and ultra wide band pulse is employed for the downlink. Firstly, based on the characteristics of OFDM, a multi-carriers DOA estimation algorithm is proposed to estimate the DOAs of multiple OFDM signals by using only two antennas, even the signals are coherent. Secondly, by using a fusion approach which fuses the estimated DOAs and an existing fixed focusing method, the spatial information focusing for mobile multi-users can be achieved. Numerical examples are provided to demonstrate the effectiveness of the proposed approach.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
