In this paper, we propose a low complexity direction of arrival (DoA) estimation algorithm that operates in radio frequency (RF) lens-embedded millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems. In mmWave system, to compute the beamforming weighting coefficients in real-time, precise DoA estimation with low complexity is essential. We first investigate the conventional DoA estimation algorithms in mmWave MIMO systems and evaluate its performance. Then we introduce the Power pROfile Based Estimation (PROBE) algorithm for DoA estimation that operates in the RF lens-embedded system. We elaborate on the computational complexity of each algorithm in terms of the number of multiplication operations. We show that the proposed algorithm has a significant performance advantage in terms of estimation accuracy over other conventional algorithms in a complexity-constrained environment.
|Title of host publication||2018 IEEE Wireless Communications and Networking Conference, WCNC 2018|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||6|
|Publication status||Published - 2018 Jun 8|
|Event||2018 IEEE Wireless Communications and Networking Conference, WCNC 2018 - Barcelona, Spain|
Duration: 2018 Apr 15 → 2018 Apr 18
|Name||IEEE Wireless Communications and Networking Conference, WCNC|
|Other||2018 IEEE Wireless Communications and Networking Conference, WCNC 2018|
|Period||18/4/15 → 18/4/18|
Bibliographical noteFunding Information:
ACKNOWLEDGMENT This research was supported by Institute of Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIP) [IITP-2017-2017-0-02015, ICT Consilience Creative Program and IITP-2016-0-00208].
© 2018 IEEE.
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