D2D Assisted Multi-Antenna Coded Caching
A device-to-device (D2D) aided multi-antenna coded caching scheme is proposed to improve the average delivery rate and reduce the downlink (DL) beamforming complexity. Novel beamforming and resource allocation schemes are proposed where local data exchange among nearby users is exploited. The transm...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10045689/ |
| _version_ | 1828009648804855808 |
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| author | Hamidreza Bakhshzad Mahmoodi Jarkko Kaleva Seyed Pooya Shariatpanahi Antti Tolli |
| author_facet | Hamidreza Bakhshzad Mahmoodi Jarkko Kaleva Seyed Pooya Shariatpanahi Antti Tolli |
| author_sort | Hamidreza Bakhshzad Mahmoodi |
| collection | DOAJ |
| description | A device-to-device (D2D) aided multi-antenna coded caching scheme is proposed to improve the average delivery rate and reduce the downlink (DL) beamforming complexity. Novel beamforming and resource allocation schemes are proposed where local data exchange among nearby users is exploited. The transmission is split into two phases: local D2D content exchange and DL transmission. In the D2D phase, subsets of users are selected to share content with the adjacent users directly. In this regard, a low complexity D2D mode selection algorithm is proposed to find the appropriate set of users for the D2D phase with comparable performance to the optimal exhaustive search. During the DL phase, the base station multicasts the remaining data requested by all the users. We identify scenarios and conditions where D2D transmission can reduce the delivery time. Furthermore, we demonstrate how adding the new D2D phase to the DL-only scenario can significantly reduce the beamformer design complexity in the DL phase. The results further highlight that by partly delivering requested data in the D2D phase, the transmission rate can be boosted due to more efficient use of resources during the subsequent DL phase. As a result, the overall content delivery performance is greatly enhanced, especially in the finite signal-to-noise (SNR) regime. |
| first_indexed | 2024-04-10T08:42:52Z |
| format | Article |
| id | doaj.art-b804e800dac648278a6e46b4760f0c7e |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-10T08:42:52Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-b804e800dac648278a6e46b4760f0c7e2023-02-23T00:01:04ZengIEEEIEEE Access2169-35362023-01-0111162711628710.1109/ACCESS.2023.324588210045689D2D Assisted Multi-Antenna Coded CachingHamidreza Bakhshzad Mahmoodi0https://orcid.org/0000-0002-2325-2214Jarkko Kaleva1https://orcid.org/0000-0003-4859-0006Seyed Pooya Shariatpanahi2https://orcid.org/0000-0003-2083-6115Antti Tolli3https://orcid.org/0000-0001-6219-9770Centre for Wireless Communications, University of Oulu, Oulu, FinlandSolmu Technologies, Oulu, FinlandSchool of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, IranCentre for Wireless Communications, University of Oulu, Oulu, FinlandA device-to-device (D2D) aided multi-antenna coded caching scheme is proposed to improve the average delivery rate and reduce the downlink (DL) beamforming complexity. Novel beamforming and resource allocation schemes are proposed where local data exchange among nearby users is exploited. The transmission is split into two phases: local D2D content exchange and DL transmission. In the D2D phase, subsets of users are selected to share content with the adjacent users directly. In this regard, a low complexity D2D mode selection algorithm is proposed to find the appropriate set of users for the D2D phase with comparable performance to the optimal exhaustive search. During the DL phase, the base station multicasts the remaining data requested by all the users. We identify scenarios and conditions where D2D transmission can reduce the delivery time. Furthermore, we demonstrate how adding the new D2D phase to the DL-only scenario can significantly reduce the beamformer design complexity in the DL phase. The results further highlight that by partly delivering requested data in the D2D phase, the transmission rate can be boosted due to more efficient use of resources during the subsequent DL phase. As a result, the overall content delivery performance is greatly enhanced, especially in the finite signal-to-noise (SNR) regime.https://ieeexplore.ieee.org/document/10045689/Multi-antenna communicationscoded cachingmulticast beamformingD2D communication |
| spellingShingle | Hamidreza Bakhshzad Mahmoodi Jarkko Kaleva Seyed Pooya Shariatpanahi Antti Tolli D2D Assisted Multi-Antenna Coded Caching IEEE Access Multi-antenna communications coded caching multicast beamforming D2D communication |
| title | D2D Assisted Multi-Antenna Coded Caching |
| title_full | D2D Assisted Multi-Antenna Coded Caching |
| title_fullStr | D2D Assisted Multi-Antenna Coded Caching |
| title_full_unstemmed | D2D Assisted Multi-Antenna Coded Caching |
| title_short | D2D Assisted Multi-Antenna Coded Caching |
| title_sort | d2d assisted multi antenna coded caching |
| topic | Multi-antenna communications coded caching multicast beamforming D2D communication |
| url | https://ieeexplore.ieee.org/document/10045689/ |
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