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dc.contributor.authorHuang, Qingquan
dc.contributor.authorLin, Min
dc.contributor.authorZhu, Wei-Ping
dc.contributor.authorCheng, Julian
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2021-01-06T06:35:37Z
dc.date.available2021-01-06T06:35:37Z
dc.date.issued2021-01-05
dc.identifier.citationHuang, Q., Lin, M., Zhu, W.-P., Cheng, J., & Alouini, M.-S. (2021). Uplink Massive Access in Mixed RF/FSO Satellite-aerial-Terrestrial Networks. IEEE Transactions on Communications, 1–1. doi:10.1109/tcomm.2021.3049364
dc.identifier.issn1558-0857
dc.identifier.doi10.1109/TCOMM.2021.3049364
dc.identifier.urihttp://hdl.handle.net/10754/666826
dc.description.abstractThis paper investigates the massive access for a satellite-aerial-terrestrial network (SATN), where a high-altitude platform (HAP) is deployed as a relay to assist the uplink transmission from terrestrial user equipment (UE) to satellite. Unlike previous works, we adopt radio frequency (RF) and free space optical for the aerial-terrestrial and satellite-aerial links, respectively. Specifically, by assuming that imperfect angular information (IAI) of each UE is known at the HAP, we develop a space division multiple access (SDMA) scheme to maximize the ergodic sum rate (ESR). To this end, we first exploit the IAI to calculate the analytical expression of channel correlation matrix. Then, by considering the limitation of array freedom, we propose a subspace-based UE grouping and scheduling scheme to cluster all UEs into groups. Next, we present a computationally effective beamforming (BF) scheme for each UE at HAP to efficiently implement SDMA in the RF link. Furthermore, a closed-form expression for the ESR of the SATN is derived to validate the proposed BF and SDMA schemes. Finally, simulation results corroborate the derived theoretical formulas and reveal the impacts of array size, angular estimation error, the number of UEs and scheduling threshold on the system performance.
dc.description.sponsorshipThis work is sponsored by Key International Cooperation Research Project under Grant 61720106003, and NUPTSF under Grant NY220111.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/9314201/
dc.relation.urlhttps://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9314201
dc.rightsArchived with thanks to IEEE Transactions on Communications
dc.subjectErgodic sum rate
dc.subjectMassive Access
dc.subjectSpace division multiple access
dc.subjectSatellite-aerial-terrestrial network
dc.titleUplink Massive Access in Mixed RF/FSO Satellite-aerial-Terrestrial Networks
dc.typeArticle
dc.contributor.departmentCommunication Theory Lab
dc.contributor.departmentComputer, Electrical and Mathematical Science and Engineering (CEMSE) Division
dc.contributor.departmentElectrical and Computer Engineering Program
dc.identifier.journalIEEE Transactions on Communications
dc.eprint.versionPost-print
dc.contributor.institutionNational Engineering Research Center of Communication and Network Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.
dc.contributor.institutionCollege of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G 1M8, Canada, and also with the School of Communication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.
dc.contributor.institutionSchool of Engineering, The University of British Columbia, Kelowna, BC V1V1V7, Canada.
kaust.personAlouini, Mohamed-Slim
dc.date.published-online2021-01-05
dc.date.published-print2021-04


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