Abstract
NOMA can achieve greater spectrum effectiveness than OMA by utilizing power domain multiplexing. The performance of NOMA in a HetNet having non-uniform small cell deployment is investigated in this research, with crucial performance metrics such as distance, channel gain, reference signal power, energy efficiency, coverage probability, achievable rate, and QoS being examined. To begin, a NOMA-oriented HetNet model is created, with users paired according to the suggested user pairing strategy. Next, taking into account the channel quality from the NOMA users to the BSs, the distribution of order statistics for distances among distinct NOMA users and the serving BS is provided. An improved fuzzy logic system is utilized for cell dimensioning and a novel SF-TSO algorithm is used for automatic base station placement. Here, the trapezoidal fuzzy membership limits are optimized by the novel SF-TSO with the intention of attaining the multi objective or the fitness function. On this foundation, we show how different networking characteristics, like the SINR threshold and BS density, affect the considered parameters of NOMA users. In addition, an analysis is provided to offer insight into the EE of the system under consideration. Furthermore, detailed simulations as well as comparisons are carried out, demonstrating the benefits of NOMA over OMA in the HetNet system under consideration.
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Abbreviations
- NOMA:
-
Non-orthogonal multiple access
- FBSs:
-
Femto base stations
- RBs:
-
Resource blocks
- OMA:
-
Orthogonal multiple access
- CS:
-
Compressive sensing
- HetNet:
-
Heterogeneous network
- R-WFISTA:
-
Restricted weighted fast iterative shrinkage-thresholding algorithm
- J-SA-GEE-PA:
-
Joint subcarrier assignment and global energy-efficient power allocation
- BS:
-
Base station
- EH:
-
Energy-harvesting
- SF-TSO:
-
Sun flower-based tunicate swarm optimization
- JT-CoMP:
-
Joint transmission coordinated multi-point
- SINR:
-
Signal-to-interference-plus-noise-ratio
- WNV:
-
Wireless network virtualization
- MIMO:
-
Multiple-input multiple output
- UNC:
-
Unlimited NOMA clustering
- SE:
-
Spectral efficiency
- LNC:
-
Limited NOMA clustering
- EE:
-
Energy-efficiency
- RANs:
-
Radio access networks
- SCs:
-
Small-cell
- TS:
-
Time slotting
- SBS:
-
Small base station
- MU:
-
Macro users
- MC:
-
Macro-cell
- OMU:
-
Offloaded macro users
- MBS:
-
Macro base station
- PU:
-
Pairing user
- QoS:
-
Quality of service
- CCU:
-
Cell centre users
- SIC:
-
Successive interference cancellation
- CEU:
-
Cell edge users
- MOP:
-
Multi-objective problem
- PA:
-
Power allocation
- SOP:
-
Single objective problem
- PA-IA-CB:
-
Power allocation-based interference alignment and coordinated beamforming
- NC:
-
Non-cooperative
- AWGN:
-
Additive white Gaussian noise
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Disney, D.A., Merline, A. An improved fuzzy logic-based small cell deployment in NOMA-HetNet: a novel sun flower-based tunicate swarm optimization-oriented multi objective concept. Sādhanā 48, 67 (2023). https://doi.org/10.1007/s12046-023-02123-1
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DOI: https://doi.org/10.1007/s12046-023-02123-1