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

页码：173 / 176

页数：4

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