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Resource allocation algorithm for multi-user
MIMO-OFDM downlink with correlated channels |
ZHANG Chengwen, ZHANG Zhongzhao, MENG Weixiao |
Communication Research Center, Harbin Institute of Technology |
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Abstract To minimize transmitting power, an adaptive resource allocation algorithm is proposed for multi-user multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) downlink with correlated channels, which, based on the user’s grouping according to their spatial correlations, combines the shared manner and the exclusive manner to allocate sub-carriers. Between different groups the shared manner with a null steering method based on group marginal users is applied, whereas within a group the exclusive manner is applied. The simulations show that the power efficiency and spectral efficiency are improved; the base station transmitting antenna number and the computational complexity is decreased.
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Issue Date: 05 September 2008
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1 |
Letaief K B Zhang Y J Dynamic multiuser resourceallocation and adaptation for wireless systemsIEEE Wireless Communications 2006 13(4)3847. doi:10.1109/MWC.2006.1678164
|
2 |
Spencer Q H Swindlehurst A L Haardt M Zero-forcing methods for downlink spatial multiplexingin multiuser MIMO ChannelsIEEE Transactionson Signal Processing 2004 52(2)461471. doi:10.1109/TSP.2003.821107
|
3 |
Wang C Murch R D Adaptive downlink multi-userMIMO wireless systems for correlated channels with imperfect CSIIEEE Transactions on Wireless Communications 2006 5(9)24352446. doi:10.1109/TWC.2006.1687767
|
4 |
Duplicy J Louveaux M Vandendorpe L Interference-free multi-user MIMO-OFDMIn: Preceedings of IEEE International Conference on Acoustics, Speech,and Signal Processing (ICASSP '05)Philadelphia, USAIEEE Press 2005 311491152
|
5 |
Ivrlac M T Utschick W Nossek J A Fading correlations in wireless MIMO communication systemsIEEE Journal on Selected Areas in Communications 2003 21(5)819828. doi:10.1109/JSAC.2003.810348
|
6 |
Ding Jiaxin Zhou Zheng A suboptimal multiple accessscheme for multiuser OFDM systemJournalof Beijing University of Posts and Telecommunications 2003 26(2)3336(in Chinese)
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