Macrodiversity analysis of anM-ary noncoherent orthogonal DS/CDMA system on shadowed Rayleigh channels |
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Authors: | Panagiotis I Dallas Dr Fotini-Niovi Pavlidou |
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Affiliation: | (1) Telecommunications Division, Department of Electrical and Computer Engineering, Faculty of Technology, Aristotle University of Thessaloniki, P.O. Box 1641, 54006 Thessaloniki, Greece |
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Abstract: | DS/CDMA noncoherentM-ary orthogonal signaling is presented in a hexagonal cell with three and six corner-based antennas. Multipath Rayleigh channel
with lognormal shadowing and perfect power control are assumed. The asynchronous case (uplink) is studied. Bit error rate
analysis is carried out to investigate the benefits of combining theM-ary orthogonal signaling and macrodiversity techniques either with uncorrelated or correlated base stations. Comparative
analysis between the one central antenna arrangement and the proposed one is presented. The results show that the combination
ofM-ary signaling with multiple corner-based antennas improves system performance especially in terms of accommodating more users
and supporting new services. The results also show that shadowing does not degrade system performance significantly. |
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Keywords: | M-ary noncoherent orthogonal system DS/CDMA directive antennas Rayleigh fading lognormal shadowing |
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