Joint Transmission Mode Selection and Scheduling in LTE Downlink MIMO Systems

被引：15
|
作者：
Niu, Jinping [1 ,2 ]
Su, Tao [1 ,2 ]
Li, Geoffrey Y. [3 ]
Lee, Daewon [3 ]
Fu, Yusun [4 ]
机构：
[1] Xidian Univ, Sch Elect Engn, Xian 710071, Peoples R China
[2] Xidian Univ, Natl Lab Radar Signal Proc, Xian 710071, Peoples R China
[3] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA
[4] Huawei Shanghai Res Inst, Shanghai 200040, Peoples R China
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2014年 / 3卷 / 02期
关键词：
Scheduling; transmission mode; high-mobility; low-mobility; OLSM; CLSM; frequency selective; 3GPP; LTE; downlink; FREQUENCY; DIVERSITY; OFDMA;
D O I：
10.1109/WCL.2013.123013.130823
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this article, we investigate multiple-input multiple-output (MIMO) transmission mode selection and scheduling for LTE downlink with users of different mobilities. Our algorithm first classifies users into high-and low-mobility ones, then selects open-loop spatial multiplexing (OLSM) or close-loop spatial multiplexing (CLSM) mode based on user's mobility, and finally assigns the time-frequency resources to ensure multi-user or frequency diversity. The proposed algorithm is with low complexity, considers all practical constraints in LTE systems, and can achieve up to 27% cell-average and 25% cell-edge throughput gain.
引用
收藏
页码：173 / 176
页数：4
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