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http://dx.doi.org/10.9723/jksiis.2018.23.4.023

Design and Implementation of LTE-TDD 2×2 MIMO Bidirectional RF Hybrid Beamforming System  

Lee, Kwang-Suk (광운대학교 전자통신공학과)
Kim, Dong-Hyun (국방과학연구소 제2본부)
Oh, Hyuk-Jun (광운대학교 전자통신공학과)
Publication Information
Journal of Korea Society of Industrial Information Systems / v.23, no.4, 2018 , pp. 23-31 More about this Journal
Abstract
This paper presented the implementation and design of the 2T-2R wireless HD video streaming systems over 1.7 GHz frequency band using 3GPP LTE-TDD standard on NI USRP RIO SDR platform. The baseband of the system used USRP RIO that are stored in Xilinx Kintex-7 chip to implement LTE-TDD transceiver modem, the signal that are transmitted from USRP RIO up or down converts to 1.7 GHz by using self-designed 1.7 GHz RF transceiver modules and it is finally communicated HD video data through self-designed 2x9 sub array antennas. It is that communication method between USRP RIO and Host PC use PCI express x4 to minimize delay of data to transmit and receive. The implemented system show high error vector magnitude performance above 32 dBc and to transmit and receive HD video in experiment environment anywhere. The proposed hybrid beam forming system could be used not only in the future 5G mobile communication systems under 6 GHz frequency band but also in the systems over 6 GHz frequency band like ones in mmWave frequency bands.
Keywords
Hybrid; Beamforming; MIMO; LTE-TDD; USRP-RIO;
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