Indoor MIMO

2012 7th International ICST Conference on Communications and Networking in China (CHINACOM)

Study on LTE MIMO Schemes for Indoor Scenarios
Zhaobiao Lv1, Jianquan Wang1, Changling Wang2, Qingyu Cai2, Xinzhong Li1, Jun Yang1, Youxiang Wang1, Bin Fan1,
Yu Sheng1
1.

Network Technology Research Center, China Unicom Research Institute
Beijing, China
2. Department of Network Construction, China Unicom Group Co., Ltd
Beijing, China
Email: [e-mail]
MIMO. In the indoor scenarios, higher data rate is required normally. It is necessary to utilize MIMO technique to provide high peak rate. For the traditional 2G/3G distributed antenna systems with single-path single-polarized antenna, it is required to upgrade to multiple antennas.

Abstract—With the development of Internet and 3G communication systems, the requirement of data transmission is increasing. Multi-Input-Multi-Output (MIMO) as one of the important techniques to improve the capacity of Long Term
Evolution (LTE) systems have been widely discussed. However, how to deploy MIMO for indoor scenarios is still a problem which needs to be solved at present. In this paper, dual-path single-polarized antenna and dual-path dual-polarized antenna solutions are analyzed. According to simulation and test results, under appropriate indoor scenarios, the both solutions have good coverage performance and have 56% improvement in capacity performance compared with traditional single-path singlepolarized antenna solution.

Figure 1. Single-path single-polarized antenna solution

Keywords- LTE; Multi-Input-Multi-Output; Indoor; Dual polarized antenna

I.

INTRODUCTION

With the development of the internet and the intensive application of 3G networks, the user's demand for data services is growing sharp. Surveys show that most part of the data services occurred in indoor scenarios. The law of the 3G services development home and abroad shows that 70% of the high-speed data services