Hybrid Precoding Design Using MMSE Baseband Precoder for mm-Wave Multi-User MIMO Systems
Farah Raisa1, Md. Rafiqul Islam2, Khaizuran Abdullah3, Asif Reza4
1Farah Raisa, Department of Electrical and Computer Engineering, International Islamic University Malaysia, Kuala Lumpur Malaysia.
2Md. Rafiqul Islam, Department of Electrical and Computer Engineering, International Islamic University Malaysia, Kuala Lumpur Malaysia.
3Khaizuran Abdullah, Department of Electrical and Computer Engineering, International Islamic University Malaysia, Kuala Lumpur Malaysia.
4Asif Reza, Department of Electrical and Computer Engineering, International Islamic University Malaysia, Kuala Lumpur Malaysia.
Manuscript received on 19 October 2019 | Revised Manuscript received on 25 October 2019 | Manuscript Published on 02 November 2019 | PP: 3486-3490 | Volume-8 Issue-2S11 September 2019 | Retrieval Number: B15880982S1119/2019©BEIESP | DOI: 10.35940/ijrte.B1588.0982S1119
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: For future 5G wireless communication networks, millimeter-wave (mmWave) cellular systems is considered to be the key enabling technology because of its high data rates, low latency, high system capacity, and huge available bandwidths. However, multiuser networks in mmWave frequency bands encounter high path loss and interference, thus degrading the performance. Applying large antenna arrays at the base stations (BS) in order to achieve high beamforming gains with the help of precoding techniques is an efficient way of improving the performance of the system. Although multi-user beamforming can improve spectral efficiencies, full digital beamforming strategies used in the conventional microwave systems increase the hardware cost and consumes high power for large number of antennas in mmW systems. In this paper, a low-complexity multi-user hybrid precoding structure is proposed for mmWave multiple input multiple output (MIMO) channels utilizing Minimum Mean Square Error (MMSE) precoders at the BS with perfect channel knowledge. Simulations show that the achievable rate obtained by the proposed hybrid precoding scheme is very close to the single-user rate and also performs better compared to other hybrid precoding approaches.
Keywords: MIMO, Millimeter-wave, MM Wave, Hybrid Precoding, MMSE.
Scope of the Article: Digital System and Logic Design