Journal of Systems Engineering and Electronics ›› 2010, Vol. 32 ›› Issue (12): 2520-2523.doi: 10.3969/j.issn.1001-506X.2010.12.06

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Novel user selection and feedback strategy with orthogonal beamforming

SHI Lin1,2, QIU Ling2, SUN Dong2   

  1. 1. Dept. of Optics and Electronics Engineering, Ordnance Engineering Coll., Shijiazhuang 050003, China; 
    2. PCN&SS Lab., Univ. of Science and Technology of China, Hefei 230027, China
  • Online:2010-12-18 Published:2010-01-03

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Abstract:

A novel user selection and feedback strategy is proposed in downlink multi-antenna multi-user systems with the orthogonal beamforming. The expression of the channel quality information (CQI) is derived, and the corresponding feedback and user selection method is provided. In practical system with small number of active users, the proposed strategy achieves higher throughput than the scheme of limited feedback and user selection based on zero-forcing beamforming (ZFBF), which turns out to be a promising scheme for practical application of multi-antenna multi-user systems.

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