Performance of Practical Multiuser MIMO Networks with Limited CSI Feedback


Hung, Lee Vei and Ku, Ivan Chui Choon and El-Saleh, Ayman A. and Le, Tuan Anh and Razak, Nur Idora and Alias, Mohamad Yusoff (2019) Performance of Practical Multiuser MIMO Networks with Limited CSI Feedback. In: 2019 IEEE 14th Malaysia International Conference on Communication (MICC), 2-4 Dec. 2019, Bangi Resort Hotel, Bangi, Malaysia.

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Efficient channel state information (CSI) feedback is crucial in practical multiuser multiple-input multiple-output (MU-MIMO) networks for effective interference mitigation. In this study, a CSI feedback scheme using random scalar quantization (RSQ) for MU-MIMO networks is proposed. The analytical expression for the quantization noise variance of the RSQ CSI feedback scheme is presented. Next, the lower bound of the relative transmission rate for the MU-MIMO network with RSQ CSI feedback is derived. Using a unified transmission framework, trade-off between the relative transmission rate and energy efficiency of the MU-MIMO network with RSQ CSI feedback is depicted. In a fully loaded network, it is shown that MU-MIMO with RSQ CSI feedback outperforms that of random vector quantization and sparse compression CSI feedback schemes by as much as 38% and 19%, respectively.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: MU-MIMO, limited CSI feedback, quantized feedback, random scalar quantization
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 06 Oct 2021 23:58
Last Modified: 07 Oct 2021 00:13


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