R. Hashemi, M. Kazemi and A. Mohammadi, "Analysis and Optimization of Spectral and Energy Efficiency in Underlaid D2D Multi-Cell Massive MISO Over Rician Fading," in IEEE Transactions on Green Communications and Networking, vol. 7, no. 1, pp. 3-15, March 2023, doi: 10.1109/TGCN.2022.3193071
Analysis and optimization of spectral and energy efficiency in underlaid D2D multi-cell massive MISO over Rician fading
|Author:||Hashemi, Ramin1,2; Kazemi, Mohammad1,3; Mohammadi, Abbas1|
1Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran
2Centre for Wireless Communications, University of Oulu, Oulu, Finland
3Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey
|Online Access:||PDF Full Text (PDF, 1.8 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2023052648511
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2023-05-26
This paper investigates the uplink spectral efficiency (SE) characterization and energy efficiency (EE) optimization of device-to-device (D2D) communications underlying a multi-cell massive multiple-input single-output (m-MISO) network, assuming that the channels are modeled with Rician fading. First, an analytical expression for the lower-bound of the ergodic capacity of a typical cellular user (CU) is derived with imperfect channel state information in the presence of D2D links’ interference. Then, a closed-form approximate achievable SE expression for a typical D2D pair is derived considering Rician fading between D2D pairs. The asymptotic SE behavior is analyzed in strong line-of-sight (LOS) conditions for CU and D2D pairs. Also, simplified expressions are obtained for the special case of Rayleigh fading. Next, to optimize the total EE, a transmit data power allocation based on the derived rate expressions is formulated. Since the optimization problem has a non-linear and non-convex objective function, it is intractable to be solved straightforwardly. Therefore, we resort to utilizing an iterative algorithm relying on fractional programming. The numerical results show that a stronger LOS component (i.e., larger Rician K-factor) between a typical CU and its serving BS leads to a significant improvement in the system performance, while it has less effect on the D2D network.
IEEE transactions on green communications and networking
|Pages:||3 - 15|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This work was supported in part by the Iran National Science Foundation (INSF) under Grant 96007127 and Grant 9701279.
© The Author(s) 2022. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0.