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Capacity assessment of a cellular radio system using a narrowband multiuser detector
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0003-4986-6123
2003 (English)In: IEEE Transactions on Wireless Communications, ISSN 1536-1276, E-ISSN 1558-2248, Vol. 2, no 4, 703-713 p.Article in journal (Refereed) Published
Abstract [en]

With a narrowband multiuser detector (MUD), multiple users can simultaneously share the same channel without using a bandwidth-expanding signature code when sufficient power differences at the receiver are maintained. In this paper, we assess the capacity gain that can be achieved in a hypothetical cellular system with centralized power control, using a narrowband MUD based on successive cancellation. The power-control algorithm is adapted to multiple users per channel in a cell. Simulation results are presented for two heuristic carrier-to-interference ratio-based channel-assignment schemes. The MUD allows for a substantial capacity gain due to a tighter packing of users in a channel. The observed gain compared with a conventional single user-per-channel system, ranges from 1.4 to 5 for cluster sizes C = 1 and 7, respectively.

Place, publisher, year, edition, pages
2003. Vol. 2, no 4, 703-713 p.
Keyword [en]
blocking probability, capacity, cellular radio system, multiuser detection (MUD), transmitter power control, symbol error-probability, power-control, successive cancellation, performance, algorithms
National Category
URN: urn:nbn:se:kth:diva-22678DOI: 10.1109/twc.2003.814335ISI: 000184215300012OAI: diva2:341376
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-01-10Bibliographically approved

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