User clustering and robust beamforming design in multicell MIMO-NOMA system for 5G communications
In this paper, we present a robust beamforming design to tackle the weighted sum-rate
maximization (WSRM) problem in a multicell multiple-input multiple-output (MIMO)–non-
orthogonal multiple access (NOMA) downlink system for 5G wireless communications. This
work consider the imperfect channel state information (CSI) at the base station (BS) by
adding uncertainties to channel estimation matrices as the worst-case model ie, singular
value uncertainty model (SVUM). With this observation, the WSRM problem is formulated …
maximization (WSRM) problem in a multicell multiple-input multiple-output (MIMO)–non-
orthogonal multiple access (NOMA) downlink system for 5G wireless communications. This
work consider the imperfect channel state information (CSI) at the base station (BS) by
adding uncertainties to channel estimation matrices as the worst-case model ie, singular
value uncertainty model (SVUM). With this observation, the WSRM problem is formulated …
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