Downlink Overloaded Multiple Access Based on Constellation Expansion
2015 (English)In: 2014 IEEE Globecom Workshops: GC Wkshps 2014, Austin, 8-12 December 2014, Piscataway, Nj: IEEE Communications Society, 2015, 977-982 p.Conference paper (Refereed)
A new overloaded multiple access scheme for the downlink of wireless systems is presented. It performs simultaneous transmission of multiple data streams intended for users experiencing similar signal-to-noise ratios (SNR). The proposed scheme performs stream multiplexing by mapping the coded bits of each stream onto the labels of an expanded constellation according to a time-varying pattern designed for providing the same level of protection against errors to all streams. Using this scheme, multiple data streams can be concurrently transmitted on the same time-frequency resource blocks of OFDMA systems, thus achieving a higher aggregate spectral efficiency and tighter delay constraints.
Place, publisher, year, edition, pages
Piscataway, Nj: IEEE Communications Society, 2015. 977-982 p.
Research subject Signal Processing
IdentifiersURN: urn:nbn:se:ltu:diva-26950DOI: 10.1109/GLOCOMW.2014.7063560Local ID: 038f6c55-3cea-4524-9887-8d64e69d27c7ISBN: 978-1-4799-7470-2OAI: oai:DiVA.org:ltu-26950DiVA: diva2:1000131
IEEE GLOBECOM : 08/12/2014 - 12/12/2014
Godkänd; 2015; 20140910 (jaavan)2016-09-302016-09-30Bibliographically approved