Random spreading for unsourced MAC with power diversity

Simple item page
buir.contributor.authorAhmadi, Mohammad Javad
buir.contributor.authorDuman, Tolga M.
buir.contributor.orcidAhmadi, Mohammad Javad|0000-0002-7201-7800
buir.contributor.orcidDuman, Tolga M.|0000-0002-5187-8660
dc.citation.epage3999en_US
dc.citation.issueNumber12en_US
dc.citation.spage3995en_US
dc.citation.volumeNumber25en_US
dc.contributor.authorAhmadi, Mohammad Javad
dc.contributor.authorDuman, Tolga M.
dc.date.accessioned2022-01-26T11:39:57Z
dc.date.available2022-01-26T11:39:57Z
dc.date.issued2021-10-11
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractWe propose an improvement of the random spreading approach with polar codes for unsourced multiple access, for which each user first encodes its message by a polar code, and then the coded bits are spread using a random spreading sequence. The proposed approach divides the active users into different groups, and employs different power levels for each group in such a way that the average power constraint is satisfied. We formulate and solve an optimization problem to determine the number of groups, and the corresponding user numbers and power levels. Extensive simulations show that the proposed approach outperforms the existing methods, especially when the number of active users is large.en_US
dc.identifier.doi10.1109/LCOMM.2021.3119424en_US
dc.identifier.eissn1558-2558
dc.identifier.issn1089-7798
dc.identifier.urihttp://hdl.handle.net/11693/76799
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttps://doi.org/10.1109/LCOMM.2021.3119424en_US
dc.source.titleIEEE Communications Lettersen_US
dc.subjectUnsourced multiple-accessen_US
dc.subjectPolar codesen_US
dc.subjectPower allocationen_US
dc.subjectSpreading sequencesen_US
dc.subjectMMSE estimatoren_US
dc.titleRandom spreading for unsourced MAC with power diversityen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Random_spreading_for_unsourced_MAC_with_power_diversity.pdf
Size:
504.21 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.69 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Department of Electrical and Electronics Engineering