Mahmood, Mir Hamza
(2009)
Performance Analysis of Link Adaptive 802.11 WLANs with Multiuser Detection Capable Receivers.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
Conventional IEEE 802.11 Medium Access Control (MAC) protocol does not allow simultaneous transmissions from stations at any moment, to avoid collisions. Namely, it employs measures such as carrier sense multiple access, collision avoidance, and distributed coordination function which are designed to discourage simultaneous transmissions. With the advent of sophisticated physical layer technologies, multi-user detection capable receivers become available. In this paper, therefore, we aim to investigate if the popular 802.11 MAC can be modified to exploit this innovation in the physical layer. We accomplish this by deriving a new throughput expression. Modern WLANs support multiple data rate transmissions via link adaptation for higher spectral efficiency. Thus, we include multi rate link adaptation in the analysis. We find that 802.11 can be modified slightly to support simultaneous transmissions and to obtain significant benefit from multi-user detection capable receivers.
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Details
Item Type: |
University of Pittsburgh ETD
|
Status: |
Unpublished |
Creators/Authors: |
|
ETD Committee: |
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Date: |
28 January 2009 |
Date Type: |
Completion |
Defense Date: |
31 October 2008 |
Approval Date: |
28 January 2009 |
Submission Date: |
6 November 2008 |
Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
Institution: |
University of Pittsburgh |
Schools and Programs: |
Swanson School of Engineering > Electrical Engineering |
Degree: |
MSEE - Master of Science in Electrical Engineering |
Thesis Type: |
Master's Thesis |
Refereed: |
Yes |
Uncontrolled Keywords: |
802.11; Distributed Coordination Function; Multirate; Multiuser Detection |
Other ID: |
http://etd.library.pitt.edu/ETD/available/etd-11062008-170452/, etd-11062008-170452 |
Date Deposited: |
10 Nov 2011 20:04 |
Last Modified: |
19 Dec 2016 14:37 |
URI: |
http://d-scholarship.pitt.edu/id/eprint/9590 |
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