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Analyzing uplink capacity of partially overlapping channel based WLANs using a hyper-receiver

Majid, MI, Imran, MA and Hoshyar, R (2008) Analyzing uplink capacity of partially overlapping channel based WLANs using a hyper-receiver In: 5th International Symposium on Wireless Communication Systems, 2008-10-21 - 2008-10-24, Reykjavik, ICELAND.

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Spectrum allocation within the fixed unlicensed band affects performance of wireless networks. Fundamental limitations of spectral efficiency on capacity of wireless local area networks (WLANs) hence needs to be studied. Recently, it was shown that the performance can be increased when both non-overlapping and partially overlapping channels are used. Unlike previous studies, this is the first known attempt on analysis of information theoretic capacity for partially-overlapping channels, as characterized by IEEE 802.11b-type systems using a hyper-receiver. Using Marenko-Pastur law distribution, capacity is approximated for such systems. We implement this by proposing a novel channel model for our analysis. The results conform to Monte Carlo simulations, with an approximate mean error of less than 5%. Fundamental tradeoffs of channel interference and power gain are discussed. We further explore the effect of access point density and find that systems based on partially overlapping channels perform well in high density deployments. We also compute capacity for a range of channel overlaps and conclude that rates close to capacity are achievable for a channel overlap of 90% and above.

Item Type: Conference or Workshop Item (Conference Paper)
Authors :
Date : 30 December 2008
Identification Number : 10.1109/ISWCS.2008.4726151
Contributors :
Uncontrolled Keywords : Science & Technology, Technology, Computer Science, Hardware & Architecture, Engineering, Electrical & Electronic, Telecommunications, Computer Science, Engineering, WIRELESS MESH NETWORKS
Related URLs :
Additional Information : © 2008 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Depositing User : Symplectic Elements
Date Deposited : 19 Dec 2012 11:18
Last Modified : 09 Jun 2014 13:43

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