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随着移动互联网的发展,为了获得更高的峰值速率和频谱效率,第三代合作伙伴计划(3GPP)提出了长期演进(LTE)系统。2010年以来,全球共部署了113个LTE商用网络,但是其中大部分都是基于频分双工(FDD)的。本文首先研究了时分双工LTE(TD-LTE)系统中的4种主要多输入多输出(MIMO)传输模式(TM);然后通过链路级仿真,评估了不同信噪比和参数配置的8×2下行平均吞吐量;最后给出了结合信道模拟器的室内性能测试方法。
With the development of the mobile Internet, the 3rd Generation Partnership Project (3GPP) proposes a Long Term Evolution (LTE) system in order to obtain higher peak rates and spectral efficiencies. Since 2010, 113 LTE commercial networks have been deployed globally, but most of them are based on Frequency Division Duplexing (FDD). In this paper, we first study the four main MIMO transmission modes (TM) in time division duplexing LTE (TD-LTE) system. Then, we evaluate the different signal-to-noise ratio × 2 downlink average throughput. Finally, the indoor performance testing method combined with channel simulator is given.