Study on Reference Signals and Control Signaling for Downlink MU-MIMO in LTE-Advanced
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概要
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Multi-user MIMO (MU-MIMO) is identified as a key technique for Long Term Evolution Advanced (LTE-A) to reach the performance requirements. In this paper, we present our study on the MU-MIMO design issues in LTE-A that are relevant to standardization such as MU-MIMO transparency, and demodulation reference signal (DM-RS) configuration. Besides qualitative analysis from various system impacts including signaling overhead, scheduling flexibility and channel estimation accuracy, numerical results are provided by both link-level and system-level simulations as well. Based on the study, we propose to support transparent MU-MIMO with quasi-orthogonal DM-RS configuration in LTE-A.
- 2010-10-20
著者
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CHEN Lan
DOCOMO Beijing Communication Laboratory Co., Ltd.
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Chen Lan
Docomo Beijing Communications Labs Co. Ltd
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Chen Lan
Docomo Beijing Communication Laboratories Co. Ltd.
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Chen Lan
Docomo Beijing Communications Laboratories Co. Ltd.
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Takeda Kazuaki
Radio Access Network Development Department Ntt Docomo Inc.
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Taoka Hidekazu
Docomo Communications Labs Europe Gmbh
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SHE Xiaoming
DoCoMo Beijing-Labs
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She Xiaoming
Docomo Beijing Communications Labs Co. Ltd
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Taoka Hidekazu
Docomo Communications Laboratories Europe Gmbh
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