[问答]

如何使用N7624B创建LTE上行链路参考信道

问答对人有帮助，内容完整，我也想知道答案 0 我有一个Signal Studio N7624B（LTE FDD），并使用4438C Sig Gen来测量FDD LTE上行链路和下行链路信号。在测试LTE时，一致性文档指出正确测试需要UL参考信道（FRC）和DL测试模型（E-TM）。我注意到在创建基本LTE DL信号时，Signal Studio有一个测试模型向导，可以让我选择适当的带宽以及特定测试所需的测试模型。但是，在创建基本UL信号时，没有向导甚至没有提及参考通道。我注意到如果你创建一个高级LTE UL信号，你有一个选项可以使用向导提供参考通道，不幸的是我不想要LTE Advanced（这还没有被3GPP最终确定......）。任何人都知道如何创建UL参考通道，如标准文件36.521表A.2.2.1.2-1中所述的UL中继器测试？感谢任何信息！以上来自于谷歌翻译以下为原文 I have a Signal Studio N7624B (LTE FDD) and am using this with a 4438C Sig Gen to measure FDD LTE uplink and downlink signals. When testing LTE, the conformance documents state that UL reference channels (FRC) and DL test models (E-TM) are required for proper testing. I notice that on Basic LTE DL signal creation, Signal Studio has a test model wizard that will allow me to select the appropriate bandwidths as well as the test model that is need for a particular test. However, when creating a Basic UL signal, there is no wizard or even mention of the reference channels. I do notice that if you create an Advanced LTE UL signal, you do have an option work with a wizard to provide reference channels, unfortunately I don't want LTE Advanced (this hasn't even been finalized by 3GPP yet...). Does anyone know how I might go about creating the UL reference channels as stated in standards doc 36.521 Table A.2.2.1.2-1 for UL repeater testing? Thanks for any info! 0
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答案对人有帮助，有参考价值 0 您好 - 这是一个误解我们的名称的案例。在Signal Studio应用中，安捷伦将功能分解为基本或高级。基本功能通常用于组件和变送器设计和验证，以便工程师在各种测试条件下通过EVM，ACLR和PAPR / CCDF等指标来表征调制和功率行为和性能。它还可用于RF接收器中的物理层验证测试。高级功能用于接收器设计和验证，N7624B在设计过程中为应用程序提供信号，例如在Rx芯片组设计和验证或模块集成和验证期间。通过生成上行链路信号来执行接收机一致性测试，包括传输信道编码。预定义配置包括用于接收器和性能要求测试的FRC配置。当与PXB一起使用时，它还允许进行高级接收机测试，例如HARQ和MIMO测试.36.521中表A.2.2.1.2-1中的信道可以使用高级许可证配置进行复制。我可以在该表中进行任何配置。要使Payload大小正确，您可能需要更改FRC向导中的参考通道。如您所述，FRC向导具有N7624B的高级许可功能。基本许可证功能将不允许您选择代码率，只允许您选择调制类型.Regards - 以上来自于谷歌翻译以下为原文 Hello - This is a case of misunderstanding our designations. In Signal Studio applications, Agilent breaks down the capabilities as Basic or Advanced. Basic capabilities are generally used in component and transmitter design and validation for engineers to characterize modulation and power behavior and performance through metrics such as EVM, ACLR, and PAPR/CCDF under a wide variety of test conditions. It also can be used for physical layer verification tests in RF receivers. Advanced capabilities are for receiver design and verification, and N7624B delivers signals to address applications in the design process, such as during Rx chipset design and verification or module integration and verification. Receiver conformance testing is performed by generating uplink signals, including transport-channel coding. Pre-defined configurations include FRC configurations for receiver and performance requirement testing. It also allows for advanced receiver tests such as HARQ and MIMO testing when used with the PXB. The channels in table A.2.2.1.2-1 in 36.521 can be duplicated with an advanced license configuration. I can make any of the configurations in that table. To get the Payload size correct, you may need to change the Reference Channel in the FRC Wizard. As you mentioned, the FRC Wizard is in the Advanced license capabilities of N7624B. The Basic license capabilities will not allow you to select the code rate, only the modulation type. Regards -

2019-7-18 09:54:06 评论举报李欢