On the Application of K-User MIMO for 6G Enhanced Mobile Broadband
This paper presents a high-throughput wireless access framework for future 6G networks. This framework, known as K-User MIMO, facilitates all-to-all communication between K access points and K mobile devices. For such a network, we illustrate the demodulation of <inline-formula><math displa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/21/6252 |
| _version_ | 1797549054492672000 |
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| author | Anil Kumar Yerrapragada Brian Kelley |
| author_facet | Anil Kumar Yerrapragada Brian Kelley |
| author_sort | Anil Kumar Yerrapragada |
| collection | DOAJ |
| description | This paper presents a high-throughput wireless access framework for future 6G networks. This framework, known as K-User MIMO, facilitates all-to-all communication between K access points and K mobile devices. For such a network, we illustrate the demodulation of <inline-formula><math display="inline"><semantics><msup><mi>K</mi><mn>2</mn></msup></semantics></math></inline-formula> independent data streams through a new interference cancellation beamforming algorithm that improves spectral efficiency compared to massive MIMO. The paper derives a multi-user Shannon Capacity formula for K-User MIMO when K is greater than or equal to 3. We define an Orthogonal Frequency Division Multiplexing (OFDM) frame structure that demonstrates the allocation of time-frequency resources to pilot signals for channel estimation. The capacity formula is then refined to include realistic pilot overheads. We determine a practical upper-bound for MIMO array sizes that balances estimation overhead and throughput. Lastly, simulation results show the practical capacity in small cell geometries under Rayleigh Fading conditions, with both perfect and realistic channel estimation. |
| first_indexed | 2024-03-10T15:09:13Z |
| format | Article |
| id | doaj.art-936d76d245a74692a08c0860d446aa74 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T15:09:13Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-936d76d245a74692a08c0860d446aa742023-11-20T19:31:52ZengMDPI AGSensors1424-82202020-11-012021625210.3390/s20216252On the Application of K-User MIMO for 6G Enhanced Mobile BroadbandAnil Kumar Yerrapragada0Brian Kelley1Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USADepartment of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USAThis paper presents a high-throughput wireless access framework for future 6G networks. This framework, known as K-User MIMO, facilitates all-to-all communication between K access points and K mobile devices. For such a network, we illustrate the demodulation of <inline-formula><math display="inline"><semantics><msup><mi>K</mi><mn>2</mn></msup></semantics></math></inline-formula> independent data streams through a new interference cancellation beamforming algorithm that improves spectral efficiency compared to massive MIMO. The paper derives a multi-user Shannon Capacity formula for K-User MIMO when K is greater than or equal to 3. We define an Orthogonal Frequency Division Multiplexing (OFDM) frame structure that demonstrates the allocation of time-frequency resources to pilot signals for channel estimation. The capacity formula is then refined to include realistic pilot overheads. We determine a practical upper-bound for MIMO array sizes that balances estimation overhead and throughput. Lastly, simulation results show the practical capacity in small cell geometries under Rayleigh Fading conditions, with both perfect and realistic channel estimation.https://www.mdpi.com/1424-8220/20/21/6252beyond-5G6GMIMOinterference alignmentK-User MIMOOFDM |
| spellingShingle | Anil Kumar Yerrapragada Brian Kelley On the Application of K-User MIMO for 6G Enhanced Mobile Broadband Sensors beyond-5G 6G MIMO interference alignment K-User MIMO OFDM |
| title | On the Application of K-User MIMO for 6G Enhanced Mobile Broadband |
| title_full | On the Application of K-User MIMO for 6G Enhanced Mobile Broadband |
| title_fullStr | On the Application of K-User MIMO for 6G Enhanced Mobile Broadband |
| title_full_unstemmed | On the Application of K-User MIMO for 6G Enhanced Mobile Broadband |
| title_short | On the Application of K-User MIMO for 6G Enhanced Mobile Broadband |
| title_sort | on the application of k user mimo for 6g enhanced mobile broadband |
| topic | beyond-5G 6G MIMO interference alignment K-User MIMO OFDM |
| url | https://www.mdpi.com/1424-8220/20/21/6252 |
| work_keys_str_mv | AT anilkumaryerrapragada ontheapplicationofkusermimofor6genhancedmobilebroadband AT briankelley ontheapplicationofkusermimofor6genhancedmobilebroadband |