Downlink Asynchronous Non-Orthogonal Multiple Access With Quantizer Optimization
In this letter, we study a two-user downlink asynchronous non-orthogonal multiple access (ANOMA) with limited feedback. We employ the max-min criterion for the power allocation and derive the closed-form expressions for the upper and lower bounds of the max-min rate. It is demonstrated that ANOMA ca...
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| Veröffentlicht in: | IEEE wireless communications letters 2020-10, Vol.9 (10), p.1606-1610 |
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| creator | Zou, Xun Ganji, Mehdi Jafarkhani, Hamid |
| description | In this letter, we study a two-user downlink asynchronous non-orthogonal multiple access (ANOMA) with limited feedback. We employ the max-min criterion for the power allocation and derive the closed-form expressions for the upper and lower bounds of the max-min rate. It is demonstrated that ANOMA can achieve the same or even higher average max-min rate with a lower feedback rate compared with non-orthogonal multiple access (NOMA). Moreover, we propose a quantizer optimization algorithm which applies to both NOMA and ANOMA. Simulation results show that the optimized quantizer significantly improves the average max-min rate compared with the conventional uniform quantizer, especially in the scenario with a low feedback rate. |
| doi_str_mv | 10.1109/LWC.2020.2998407 |
| format | Article |
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Simulation results show that the optimized quantizer significantly improves the average max-min rate compared with the conventional uniform quantizer, especially in the scenario with a low feedback rate.</description><identifier>ISSN: 2162-2337</identifier><identifier>EISSN: 2162-2345</identifier><identifier>DOI: 10.1109/LWC.2020.2998407</identifier><identifier>CODEN: IWCLAF</identifier><language>eng</language><publisher>Piscataway: IEEE</publisher><subject>Algorithms ; Asynchronous non-orthogonal multiple access ; Distortion ; Downlink ; Downlinking ; Feedback ; limited feedback ; Lower bounds ; NOMA ; Nonorthogonal multiple access ; Optimization ; Quantization (signal) ; quantizer optimization ; Resource management ; Silicon carbide</subject><ispartof>IEEE wireless communications letters, 2020-10, Vol.9 (10), p.1606-1610</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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| subjects | Algorithms Asynchronous non-orthogonal multiple access Distortion Downlink Downlinking Feedback limited feedback Lower bounds NOMA Nonorthogonal multiple access Optimization Quantization (signal) quantizer optimization Resource management Silicon carbide |
| title | Downlink Asynchronous Non-Orthogonal Multiple Access With Quantizer Optimization |
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