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NOMA in 5G Networks
- 1. NOMA IN 5G Netowrks Upcomgin Revolution In Wireless Communications Student CMS ID Hadi Askari 237753 Anwar Sarwar 212552 Syed Shaharyaar Hussain 218177 Shaheer Bhatti 212291
- 2. • Non-orthogonal multiple access (NOMA) is an essential enabling technology for the fifth-generation (5G) wireless networks to meet the heterogeneous demands on low latency, high reliability, massive connectivity, improved fairness, and high throughput. • The primary reason for adopting NOMA in 5G owes to its ability of serving multiple users using the same time and frequency resources. • In contrast to OMA, non-orthogonal multiple access (NOMA) allows inter-user interference in the resource allocation of users and thus multiple users are served using the same resource block. What is NOMA?
- 3. Fundamentals of NOMA • There are two main types of NOMA • Power Domain NOMA • Code Domain NOMA • P-NOMA assigns a unique power level to a user and multiple users transmit their signals sharing the same time-frequency-code resources, each using its allocated power. • The level of power for a user is decided based on its channel gain: a user with higher channel gain is often assigned a lower power level. At the receiving ends, different users' signals can be separated by exploiting the users’ power- difference based on SIC.
- 4. Benefits of NOMA over OMA • Superior Spectral Efficiency • Can support large number of users • Lower Latency for user • Maintains user fairness and quality of service via power control between users.
- 5. Clustering • Clustering is done in two steps • Spatial Clustering • NOMA Clustering Spatial NOMA
- 6. • If there are m UEs in a spatial cluster 𝛾1 ≥ 𝛾2 ≥··· ≥ 𝛾𝛼 ≫ 𝛾𝛼+1 ≥ 𝛾𝛼+2 ≥··· ≥ 𝛾𝑚 Moderate Extreme
- 7. What is SIC? Any SIC Example? What’s logical basis for SIC? What is Data-Rate constraint? SIC and Data Rate constraint are different? SIC and Rate Constraints SIC e
- 8. What is SIC? Any SIC Example? What’s logical basis for SIC? What is Data-Rate constraint? SIC and Data Rate constraint are different? SIC and Rate Constraints SIC
- 9. What is SIC? Any SIC Example? What’s logical basis for SIC? What is Data-Rate constraint? SIC and Data Rate constraint are different? SIC and Rate Constraints SIC
- 10. What is SIC? Any SIC Example? What’s logical basis for SIC? What is Data-Rate constraint? SIC and Data Rate constraint are different? SIC and Rate Constraints Data Rate
- 11. What is SIC? Any SIC Example? What’s logical basis for SIC? What is Data-Rate constraint? SIC and Data Rate constraint are different? SIC and Rate Constraints Data Rate
- 12. Optimization Problems • Data Rate Maximization • Power Allocation Optimization • Energy Consumption Optimization • Latency Minimization • Joint Optimization of Power and Bandwidth Allocation
- 13. Resource Scheduling • Fundamental step to optimization problems • Different for each optimization problem • Power and frequency allocation
- 18. References
- 19. THANK YOU!