Correlated fading and antenna directionality in multiuser detection
2004 (English)In: VTC2004-FALL: 2004 IEEE 60TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-7: WIRELESS TECHNOLOGIES FOR GLOBAL SECURITY, NEW YORK: IEEE , 2004, 1909-1913 p.Conference paper (Refereed)
We investigate detection of multiple users at a base station array of antennas, isotropic or directional, with overlapping beam patterns. The question is whether the increased diversity obtainable by isotropic antennas can compensate for the loss of antenna gain. We also account for limited angle spread of the arriving signals, which correlates the gains and reduces diversity. We consider the multiuser detection algorithm to be maximum likelihood and present new expressions for the resulting symbol error rate in correlated fading. Among other features, they show that each user's performance depends on the angle spreads of all users. We also demonstrate that a circular array of directional antennas with overlapping beams can achieve the same level of diversity as a circular array of isotropic antennas.
Place, publisher, year, edition, pages
NEW YORK: IEEE , 2004. 1909-1913 p.
antenna arrays, multiuser detection, diversity, directional antennas
IdentifiersURN: urn:nbn:se:kth:diva-44739ISI: 000227931902079ScopusID: 2-s2.0-17144399489ISBN: 0-7803-8521-7OAI: oai:DiVA.org:kth-44739DiVA: diva2:451494
60th IEEE Vehicular Technology Conference Location: Los Angeles, CA Date: SEP 26-29, 2004
QC 201110262011-10-262011-10-252011-11-02Bibliographically approved