Densely Deployed Indoor Massive MIMO Experiment: From Small Cells to Spectrum Sharing to Cooperation
Massive MIMO is a key 5G technology that achieves high spectral efficiency and capacity by significantly increasing the number of antennas per cell. Furthermore, due to precoding, massive MIMO allows co-channel interference cancellation across cells. In this work, based on experimental channel data...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-06-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/21/13/4346 |
| _version_ | 1827688802439659520 |
|---|---|
| author | Andrea P. Guevara Sofie Pollin |
| author_facet | Andrea P. Guevara Sofie Pollin |
| author_sort | Andrea P. Guevara |
| collection | DOAJ |
| description | Massive MIMO is a key 5G technology that achieves high spectral efficiency and capacity by significantly increasing the number of antennas per cell. Furthermore, due to precoding, massive MIMO allows co-channel interference cancellation across cells. In this work, based on experimental channel data for an indoor scenario, we analyse the impact of inter and intra-cell interference suppression in terms of spectral efficiency, capacity, user fairness and computational cost for three simulated systems under different cooperation levels. The first scenario assumes a cooperative case where eight neighbouring cells share the spectrum and infrastructure. This scenario provides the highest system performance; however, user fairness is achieved only when there is inter and intra-cell interference suppression. The second scenario considers eight cells that only share the spectrum; with full intra-cell and inter-cell interference cancellation, it is possible to achieve 32% of the optimal capacity with 20% of the computational cost in each distributed CPU, although the total computational cost per system is the highest. The third scenario considers eight independent cells operating in different frequency bands; in this case, intra-cell interference suppression leads to higher spectral efficiency compared to the cooperative case without intra-cell interference suppression. |
| first_indexed | 2024-03-10T10:03:46Z |
| format | Article |
| id | doaj.art-9adb66d0eeb8421cad8feb9d01dda489 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T10:03:46Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-9adb66d0eeb8421cad8feb9d01dda4892023-11-22T01:43:11ZengMDPI AGSensors1424-82202021-06-012113434610.3390/s21134346Densely Deployed Indoor Massive MIMO Experiment: From Small Cells to Spectrum Sharing to CooperationAndrea P. Guevara0Sofie Pollin1Department of Electrical Engineering, KU Leuven, 3001 Leuven, BelgiumDepartment of Electrical Engineering, KU Leuven, 3001 Leuven, BelgiumMassive MIMO is a key 5G technology that achieves high spectral efficiency and capacity by significantly increasing the number of antennas per cell. Furthermore, due to precoding, massive MIMO allows co-channel interference cancellation across cells. In this work, based on experimental channel data for an indoor scenario, we analyse the impact of inter and intra-cell interference suppression in terms of spectral efficiency, capacity, user fairness and computational cost for three simulated systems under different cooperation levels. The first scenario assumes a cooperative case where eight neighbouring cells share the spectrum and infrastructure. This scenario provides the highest system performance; however, user fairness is achieved only when there is inter and intra-cell interference suppression. The second scenario considers eight cells that only share the spectrum; with full intra-cell and inter-cell interference cancellation, it is possible to achieve 32% of the optimal capacity with 20% of the computational cost in each distributed CPU, although the total computational cost per system is the highest. The third scenario considers eight independent cells operating in different frequency bands; in this case, intra-cell interference suppression leads to higher spectral efficiency compared to the cooperative case without intra-cell interference suppression.https://www.mdpi.com/1424-8220/21/13/4346massive MIMOspectral efficiencyspectrum sharinginfrastructure sharinginfrastructure cooperation |
| spellingShingle | Andrea P. Guevara Sofie Pollin Densely Deployed Indoor Massive MIMO Experiment: From Small Cells to Spectrum Sharing to Cooperation Sensors massive MIMO spectral efficiency spectrum sharing infrastructure sharing infrastructure cooperation |
| title | Densely Deployed Indoor Massive MIMO Experiment: From Small Cells to Spectrum Sharing to Cooperation |
| title_full | Densely Deployed Indoor Massive MIMO Experiment: From Small Cells to Spectrum Sharing to Cooperation |
| title_fullStr | Densely Deployed Indoor Massive MIMO Experiment: From Small Cells to Spectrum Sharing to Cooperation |
| title_full_unstemmed | Densely Deployed Indoor Massive MIMO Experiment: From Small Cells to Spectrum Sharing to Cooperation |
| title_short | Densely Deployed Indoor Massive MIMO Experiment: From Small Cells to Spectrum Sharing to Cooperation |
| title_sort | densely deployed indoor massive mimo experiment from small cells to spectrum sharing to cooperation |
| topic | massive MIMO spectral efficiency spectrum sharing infrastructure sharing infrastructure cooperation |
| url | https://www.mdpi.com/1424-8220/21/13/4346 |
| work_keys_str_mv | AT andreapguevara denselydeployedindoormassivemimoexperimentfromsmallcellstospectrumsharingtocooperation AT sofiepollin denselydeployedindoormassivemimoexperimentfromsmallcellstospectrumsharingtocooperation |