Abstract
A spatial compatible user grouping algorithm is proposed to reduce CoChannel Interference (CCI) in Space Division Multiple Access (SDMA) multiuser Multiple Input Multiple Output (MIMO) systems. We evaluate the interferences among users by use of distances between row spaces spanned by users’ channel matrixes, then control frequency sharing according to the compatible user grouping algorithm. Results show that the row space distance algorithm outperforms others because it can fully utilize the information from users’ channel matrixes, especially the matrix structure information. The results also prove that the algorithm based on channel matrix structure analysis is a better candidate for spatial compatibility approximation.
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References
Q. H. Spencer, A. L. Swindlehurst. Channel allocation in multi-user MIMO wireless communications systems. in Proc. of IEEE ICC’2004, Paris, France, Jun. 20–24, 2004, vol.5, 3035–3039.
C. Farsakh, J. A. Nossek. A real time downlink channel allocation scheme for an SDMA mobile radio system. in Proc. of IEEE PIMRC’1996, Taipei, Oct. 15–18, 1996, vol. 3, 1216–1220.
G. H. Golub, C. F. van Loan. Matrix Computations. John Hopkins Press, 1983, 20–22.
T. Yoo, A. Goldsmith. On the optimality of multi-antenna broadcast scheduling using zero-forcing beamforming. IEEE Journal on Selected Areas in Communications, 24(2006)3, 528–541.
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Li, L., Niu, Z. Spatial compatible user grouping algorithm for multiuser MIMO systems. J. of Electron.(China) 24, 257–260 (2007). https://doi.org/10.1007/s11767-006-0115-4
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DOI: https://doi.org/10.1007/s11767-006-0115-4
Key words
- Multiple Input Multiple Output (MIMO)
- Space Division Multiple Access (SDMA)
- Multiuser system
- Radio resource management