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Improved Beamforming for Radio Links with Multi-Level Linearly Modulated Signals
KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikation: Infrastruktur och tjänster, Kommunikationssystem, CoS. (Radio Communication Systems Lab)
KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikation: Infrastruktur och tjänster, Kommunikationssystem, CoS. (Radio Communication Systems Lab)ORCID-id: 0000-0001-9697-9978
2009 (engelsk)Inngår i: 2009 IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, 2009, s. 913-917Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Multiple constellations has been proposed recently as a way of improving the system performance when used in conjunction with Orthogonal Transmit Diversity (OTD) for high level linear modulation schemes. This paper considers the use of multiple constellations in Multiple Input Multiple Output (MIMO) antenna systems. The premise is that the same modulation scheme is used with different bits to symbols mapping for each branch. This improved beamforming results in better performance as compared to MIMO-MRC where the same bits to symbols mapping is used on all branches. Analytical expression for Symbol Error Probability (SEP) is derived. The results obtained show that the new proposed improved beamforming scheme outperforms conventional MIMO-MRC with a performance dividend that increases with the linear modulation level.

sted, utgiver, år, opplag, sider
2009. s. 913-917
Serie
IEEE Wireless Communications and Networking Conference, ISSN 1525-3511
Emneord [en]
Analytical expressions, Linear modulations, Linearly modulated signals, Modulation schemes, Multi-level, Multiple-input-multiple-output antenna systems, Orthogonal transmit diversity, Symbol error probability, Beamforming, Cellular radio systems, Modulation, Multiplexing, Probability, Radio links, Rayleigh scattering
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-30397DOI: 10.1109/WCNC.2009.4917746ISI: 000272057700164Scopus ID: 2-s2.0-70349182673ISBN: 978-1-4244-2947-9 (tryckt)OAI: oai:DiVA.org:kth-30397DiVA, id: diva2:401076
Konferanse
IEEE Wireless Communications and Networking Conference, Budapest, HUNGARY, APR 05-08, 2009
Merknad
QC 20110301Tilgjengelig fra: 2011-03-01 Laget: 2011-02-24 Sist oppdatert: 2018-01-12bibliografisk kontrollert

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