LTE-A CSI-RSRP测量算法研究

[摘要] 分别以单天线端口的信道状态信息参考信号（CSI-RS）场景和两天线端口的CSI-RS场景为例子，通过详细的公式推导了信道状态信息参考信号接收功率（CSI-RSRP）测量的4种不同算法，并进行了仿真验证。根据仿真结果不仅可以分析出这些算法的特点，还得出如果要提高CSI-RSRP的测量精度，可以尽量增大CSI-RSRP的测量带宽和增加参与计算CSI-RSRP的子帧数。

[关键词] CSI-RS；CSI-RSRP；时域相关法；频域相关法

[Abstract] Respectively taking the scenario of a single antenna-port-based channel status information-reference signal (CSI-RS) and two antenna port based CSI-RS as example, four kinds of algorithms of channel status information-reference signal received power (CSI-RSRP) measurement were researched in this paper through deriving formula in detail. Simulations were also run for verification. According to the simulation results, not only the different features of these algorithms were analyzed, but we also determined that the precision of CSI-RSRP measurement can be improved by increasing the CSI-RSRP measurement bandwidth and the number of subframes used to calculate CSI-RSRP.

[Keywords] CSI-RS; CSI-RSRP; time domain correlation; frequency correlation