Performance Analysis of Cell-Free Massive MIMO-URLLC Systems Over Correlated Rician Fading Channels With Phase Shifts

Zhang, Yao; Xia, Wenchao; Zhao, Haitao; Zhu, Yongxu; Xu, Wei; Lu, Weidang

doi:10.1109/twc.2024.3389019

Cited by 10 publications

(1 citation statement)

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“…There is a dominant LOS component that in fact improves the strength of the signal and therefore reduces the effects of fading but at the same time is concomitant with challenges related to attaining accurate modeling of the channel. The channel estimation techniques, along with insuring the optimization of MIMO-NOMA schemes, become indispensable for the Rician fading environment [17].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Enhanced Downlink Transmission in MIMO-NOMA Networks under Rician Fading Channels

Ahmmed,

Kabir,

Tarfi

et al. 2024

Preprint

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This paper investigates downlink transmission in multiple-input multiple-output (MIMO) non-orthogonal multiple access (NOMA) networks under Rician fading channels. An analytical framework for user signal-to-interference-plus-noise ratio (SINR) and bit error rate (BER) is developed. Numerical results are given to show that the outage probability is significantly decreased with higher transmit power, especially for cell-edge users, since NOMA is a good power allocation scheme. Furthermore, at higher SINR, the Bit-Error-Rate (BER) is reduced for all users, though such a user located far from the transmitter sees improved performance. This shows that MIMO NOMA presents an inter-user interference mitigation technique, and the closer users will benefit most. Overall, in comparison with SIMO NOMA, the MIMO NOMA will have better performance in either outage or BER reduction because of multi-antenna.

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Section: Introductionmentioning

confidence: 99%