For the cooperative multi-cell systems with muki-user MIMO, a new limited feedback bit allocation scheme is proposed to minimize the rate loss caused by quantization error. In the proposed scheme, the Channel State In...For the cooperative multi-cell systems with muki-user MIMO, a new limited feedback bit allocation scheme is proposed to minimize the rate loss caused by quantization error. In the proposed scheme, the Channel State Information （CSI） feedback of cell-edge user for the local service cell and the adjacent interference cell are separately quantized. Based on the upper bound of the rate loss of cell-edge user due to the limited feedback, the number of feedback bits for quantized CSI of the local service cell and the adjacent cell are optimized with the fixed total bits of the limited feedback. The simulation shows that our proposed scheme of feedback bits allocation efficiently decreases the interference and increases the rate of systems compared with that of equal bits allocation and those of other allocations.展开更多
Due to quick changes of the market and long supply chain, it is difficult for clothing enterprises to make timely and correct production adjustment. According China＇ s data, research of this paper indicates that the ...Due to quick changes of the market and long supply chain, it is difficult for clothing enterprises to make timely and correct production adjustment. According China＇ s data, research of this paper indicates that the correctness of clothing enterprises adjustment is only about 43%. Some positive actions can improve the condition, such as set up the quick feedback way of the market information, improve information sharing by cooperation mechanism of upstream and downstream in the industry or cross industry, and strengthen the regulatory mechanism of production.展开更多
基金Acknowledgements The authors would like to thank the reviewers for their detailed reviews and constructive comments, which have helped to improve the quality of this paper. This work was supported partiaUy by the National Natural Science Foundation of China under Grant No. 60772110 Fundamental Research Funds for the Central Universities.
文摘For the cooperative multi-cell systems with muki-user MIMO, a new limited feedback bit allocation scheme is proposed to minimize the rate loss caused by quantization error. In the proposed scheme, the Channel State Information （CSI） feedback of cell-edge user for the local service cell and the adjacent interference cell are separately quantized. Based on the upper bound of the rate loss of cell-edge user due to the limited feedback, the number of feedback bits for quantized CSI of the local service cell and the adjacent cell are optimized with the fixed total bits of the limited feedback. The simulation shows that our proposed scheme of feedback bits allocation efficiently decreases the interference and increases the rate of systems compared with that of equal bits allocation and those of other allocations.
文摘Due to quick changes of the market and long supply chain, it is difficult for clothing enterprises to make timely and correct production adjustment. According China＇ s data, research of this paper indicates that the correctness of clothing enterprises adjustment is only about 43%. Some positive actions can improve the condition, such as set up the quick feedback way of the market information, improve information sharing by cooperation mechanism of upstream and downstream in the industry or cross industry, and strengthen the regulatory mechanism of production.
