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| Title: | Improving QoS with MIMO-OFDM in future broadband wireless networks |
| Authors: | Bulega, Tonny Eddie
Gang, Wei
Fang-Jiong, Chen |
| Keywords: | wireless links
Multiple-Input Multiple-Output
Orthogonal Frequency Division
quality-of-service
MIMO
OFDM
Inter-Symbol-Interference |
| Issue Date: | 2007 |
| Publisher: | Fountain Publishers Kampala |
| Citation: | Bulega, T. E., Gang, W. and Fang-Jiong, C. (2007). Improving QoS with MIMO-OFDM in future broadband wireless networks. 3rd Internation Conference on Computing and ICT Research: Information Technology, pp.360-371 |
| Abstract: | Designing very high speed wireless links that offer good quality-of-service (QoS) and
range- capability in non-line-of-sight (NLOS) environments constitutes a significant
research and engineering challenge. In this article, we provide an analytical
overview and performance analysis, on the key issues of an emerging technology
known as Multiple-Input Multiple-Output (MIMO) - Orthogonal Frequency Division
Multiplexing (OFDM) wireless that offer significant promise in achieving high data
rates over wireless links. MIMO technology holds the potential to drastically improve
the spectral efficiency and link reliability in future wireless networks while the OFDM
transmission scheme turns the frequency-selective channel into a set of parallel flat
fading channels, which is an attractive way of coping with Inter-Symbol-Interference
(ISI). The combination of MIMO and OFDM has been designed to improve the data
rate and the QoS of the wireless system by exploiting the multiplexing gain and/
or the diversity gain which is a major problem in communication. In this article,
key areas in OFDM-MIMO like Space-time block-coding (STBC), channel modeling
and channel estimation are presented. Inter-channel-interference (ICI) which causes
channel degradation is analyzed and we conclude by highlighting areas of further
research. |
| URI: | http://hdl.handle.net/123456789/1978
http://cit.mak.ac.ug/iccir/downloads/SREC_07/Bulega%20Tonny%20Eddie,%20Gang%20Wei,%20Fang-Jiong%20Chen_07.pdf |
| ISBN: | 978-9970-02-730-9 |
| Appears in Collections: | Conference and Workshop Reports (CIT)
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| bulega-tonny-eddie-and-gang-wei-and-fang-jiong-chen-cit-conf.pdf | 412Kb | Adobe PDF | View/Open |
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