Browsing by Author "Horng, Cian-Ya"

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Joint AoA and Channel Estimation for Pulse-shpaed SIMO-OFDM systems
(2018-01-01)
Horng, Cian-Ya
;
Wu, Wen-Rong
;
Huang, Din-Hwa
;
電信工程研究所
;
Institute of Communications Engineering
Beamforming has been considered a crucial technique in 5G era. To perform received beamforming, one must know the information of angle-of-arrival (AoA). This paper considers AoA estimation in single-input-multiple-output (SIMO) pilot-assisted OFDM systems. Exploiting the sparsity of the wireless channel, we can first efficiently estimate channel impulse response with a compressive-sensing based technique. However, existing works often do not take the pulse-shaping effect into account, resulting in poor performance in real-world systems. We propose a basis adaptive block sparse Bayesian learning framework to solve the problem. Once the CIRs corresponding to received antennas are obtained, AuAs can then be estimated accordingly.