A study of opportunism for multiple-antenna systems
IEEE Transactions on Information Theory
An overview of scheduling algorithms in MIMO-based fourth-generation wireless systems
IEEE Network: The Magazine of Global Internetworking
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In this paper, for multiuser MIMO system, we consider a suboptimal scheduling scheme that allocates the channel to the user whose channel matrix has the maximal Frobenius norm and also we derive a tight expression of system capacity for it. Furthermore, exploiting this Frobenius norm, we propose a threshold based limited feedback scheme and give a theoretical analysis between the capacity and threshold value. Simulation shows the proposed schemes can achieve tradeoffs among complexity, feedback load, and capacity enhancement with the proper threshold value, which can be obtained by our analytical approximations.