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Content Provider | IEEE Xplore Digital Library |
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Author | Guangyi Liu Feng Jiang Bei Zhou Ying Wang Ping Zhang Hongyan Cui |
Copyright Year | 2006 |
Description | Author affiliation: WTI Inst., Beijing Univ. of Posts & Telecommun. (Guangyi Liu; Feng Jiang; Bei Zhou; Ying Wang; Ping Zhang; Hongyan Cui) |
Abstract | Multiple input and multiple output (MIMO) can greatly enhance the performance of wireless system. However, the limited battery life and terminal size of the user equipment (UE) in a cellular system put a constraint on the performance enhancement by MIMO. Especially when the transmitter has more antenna than the receiver in downlink, the conventional MIMO schemes can only exploit partial multiplexing gain and diversity gain. For a multiuser system, multiuser diversity gain can be achieved by exploiting the independent frequency and spatial selective fading one another. In this paper, different multiuser multiple access schemes with greedy scheduling of MIMO OFDMA are investigated, e.g. TDMA, FDMA/TDMA and SDMA/FDMA/TDMA. For full spatial-frequency multiuser diversity gain and spatial multiplexing gain can be achieved, SDMA/FDMA/TDMA obtains highest spectrum efficiency. Its gain exceeds that of TDMA and FDMA/TDMA at least 80% and 40% respectively. The more antennas configured, the more gain can be observed from SDMA/FDMA/TDMA |
Sponsorship | IEEE Circuits and Syst. Soc. HKUST UESTC City Univ. of Hong Kong |
Starting Page | 1367 |
Ending Page | 1371 |
File Size | 5613524 |
Page Count | 5 |
File Format | |
ISBN | 0780395840 |
DOI | 10.1109/ICCCAS.2006.284895 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2006-06-25 |
Publisher Place | China |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Time division multiple access Frequency division multiaccess Transmitters Transmitting antennas Receiving antennas Diversity methods Downlink MIMO Batteries Multiaccess communication |
Content Type | Text |
Resource Type | Article |
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