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分析PDSCH解调性能测试的吞吐量

LTE吞吐量分析仪Overview

You can use the LTE Throughput Analyzer app to execute a physical downlink shared channel (PDSCH) demodulation performance test.

开放LTE吞吐量分析仪应用程序

要打开LTE吞吐量分析仪应用程序,请选择应用tab on the MATLAB desktop and click the following icon.

另外,可以从MATLAB启动LTE吞吐量分析仪应用程序®命令窗口。

从命令行开放LTE吞吐量分析仪应用程序

执行时,将出现“ LTE吞吐量分析仪对话框”ltedlconformanceTestTool没有输入参数的函数。

ltedlconformanceTestTool

Figure LTE PDSCH Conformance Testing contains 2 axes objects and other objects of type uicontrol, uipanel. Axes object 1 with title Throughput vs. SNR contains an object of type line. This object represents Target throughput. Axes object 2 with title Running average throughput per frame for all SNR values contains an object of type line. This object represents Target throughput.

Dialog Box Inputs and Outputs

参数

In theLTE PDSCH一致性测试用户界面,您可以设置以下参数:

参数(等效字段) Description
Reference channel((RC

'r0'(默认),'r1',,,,'r2',,,,'r3',,,,'r4',,,,'r5',,,,'r6',,,,'r7',,,,'R8',,,,'R9',,,,'r10',,,,'R11',,,,'R12',,,,'r13',,,,'R14',,,,'R6-27RB',,,,'R12-9RB',,,,'R11-45RB',,,,用户自定义

参考测量通道(RMC)编号或类型,如TS 36.101,附件A.3所示。

  • To facilitate the transmission of system information blocks (SIB), normally no user data is scheduled on subframe 5. However,'r.31-3a'and'R.31-4'是持续的数据速率RMC,并在子帧5中具有用户数据。

  • 'r.6-27rb',,,,'r.12-9rb',,,,and'R.11-45RB'are custom RMCs configured for non-standard bandwidths that maintain the same code rate as the standardized versions defined in TS 36.101, Annex A.3.

To define your own reference channel, select用户自定义。TheUser-defined configuration对话框打开。为了Configuration structure variable name,,,,type the name of an RC parameter structure variable in the MATLAB workspace.

该工具期望此变量在MATLAB基本工作区中存在。使用功能创建基本的配置结构ltermcdlby choosing a closely matched RMC and modifying to meet your requirements. Use this approach to simulate transmission modes 7–10. Specifically, whentxscheme='port5',,,,'port7-8',,,,'Port8', 或者'Port7-14',其中PDSCH解调需要基于DM-RS的通道估计。在这种情况下,预编码矩阵,w,,,,is randomly defined per subframe according to TS 36.101, Table 8.3.1-1, or Table 8.3.2-1.

Duplex mode((双工模板

'fdd'(默认),'TDD'

双链模式,指定为:

  • 'fdd'用于频分式双工或

  • 'TDD'for Time Division Duplex

传输方案((txscheme

'port0',,,,'TxDiversity',,,,'CDD',,,,'spatialmux',,,,'多用户',,,,'port5',,,,'port7-8',,,,'Port8',,,,'Port7-14'

PDSCH传输方案,指定为以下选项之一。

传输方案 Description
'port0' Single antenna port, port 0
'TxDiversity' 传递多样性
'CDD' Large delay cyclic delay diversity scheme
'spatialmux' 闭环空间多路复用
'多用户' Multi-user MIMO
'port5' 单人港口,港口5
'port7-8' 单端港口,港口7,nlayers= 1。双层传输,端口7和8nlayers= 2
'Port8' 单人体港口,港口8
'Port7-14' 最多八层传输,端口7–14

PDSCH RHO(DB)((

0(默认),数字标量

PDSCH资源元素功率分配,DB

传播模型((延迟版

'Off',,,,'epa'(默认),'EVA',,,,'etu',,,,'hst'

Delay profile model. For more information, seePropagation Channel Models

多普勒(Hz)((多普尔弗雷克

'5',,,,'70',,,,'300',,,,'750'

Maximum多普勒频率,以Hz。

天线相关性((MIMOCorrelation

'低的',,,,'Medium',,,,'高的'

UE和EnodeB天线之间的相关性

没有接收天线((nrxant

Nonnegative scalar integer

接收天线的数量

SNR(DB)

数字向量

SNR值,在DB中

Simulation length (frames)

Positive scalar integer

Simulation length, in frames

HARQ过程数量((nharqprocesses

1, 2, 3, 4, 5, 6, 7, or 8

每个组件载体的HARQ过程数量

Perfect channel estimator

'是的',,,,'不'

频道估计器在设置时提供了完美的频道估计'是的'。有关更多信息,请参阅ltedlperfectChannElestimate

PMI mode((pmimode

“宽带”(默认),'Subband'

PMI报告模式。pmimode=“宽带”corresponds to PUSCH reporting Mode 1-2 or PUCCH reporting Mode 1-1 (PUCCH Report Type 2) andpmimode='Subband'对应于Pusch报告模式3-1。

Simulation results

可变名称以字母字符开头,包含字母数字字符。

Simulation results output variable name. When you clickGenerate waveform,,,,a new variable with this name is created in the MATLAB workspace.

Examples

Perform 4-by-2 Transmit Diversity Conformance Test

This example shows how to run a conformance test for a single codeword RMC R.12-9RB for the transmit diversity transmission scheme with EPA-5 fading.

打开LTE吞吐量分析仪应用程序。选择应用tab on the MATLAB desktop and click the following icon.

LTE PDSCH一致性测试对话框打开。

来自Reference channel下拉列表,选择R.12-9RB

为了SNR, 进入[-3.0 -1.0 1.0 3.0]

为了Simulation length (frames), 进入20

Click theStart simulationbutton. Wait a few minutes for the simulation to run. In the bottom-right corner of the window, next toEstimated time remaining,,,,the tool displays an approximation of how long the simulation still needs to run. When the simulation finishes, the dialog box appears as shown in the following figure.

The simulation result for a 20-frame run is displayed in the MATLAB Command Window.

结果3 dBSNR Throughput: 47.65% Result for -1 dB SNR Throughput: 87.65% Result for 1 dB SNR Throughput: 95.59% Result for 3 dB SNR Throughput: 100.00%

除此之外simResultsvariable now appears in the MATLAB workspace. EntersimResults查看其内容。

simResults
simresults = 1x4结构数组带有字段:吞吐量tpperframe rawber

Perform Customized Conformance Test with User-Defined Configuration

This example shows how to run a conformance test for a user-defined configuration structure. You can carry out performance analysis and testing under user-defined settings. To do so, select'用户自定义'从“参考通道”弹出菜单中,然后提示配置结构变量名称。测试工作台将期望此变量在“基础”工作区中存在(用户已经定义)。

执行单个物理资源块(PRB)RMC R.0符合度测试,除了分配的资源块移至上带边缘而不是下带边缘。首先,使用功能创建基本配置结构ltermcdl。选择最紧密的RMC。然后,对此进行修改PRBSETrequirement.

rmc = ltermcdl('R.0'); rmc.PDSCH.PRBSet = rmc.NDLRB-1;

打开LTE吞吐量分析仪应用程序。选择应用tab on the MATLAB desktop and click the following icon.

LTE PDSCH一致性测试对话框打开。

来自Reference channel下拉列表,选择用户自定义。用户定义的配置对话框打开。

为了Configuration structure variable name, 进入rmc。ClickOK

Click theStart simulationbutton. Wait a few minutes for the simulation to run. In the bottom-right corner of the window, next toEstimated time remaining,,,,the tool displays an approximation of how long the simulation still needs to run. When the simulation finishes, the dialog box appears as shown in the following figure.

The simulation result for a 20-frame run is displayed in the MATLAB Command Window.

-2 dB snr吞吐量的结果:-1 dB snr吞吐量的7.22%结果:1 dB snr吞吐量的15.56%结果:2 dB SNR吞吐量的28.33%结果:33.89%

除此之外simResultsvariable now appears in the MATLAB workspace. EntersimResults查看其内容。

simResults
simresults = 1x4结构数组带有字段:吞吐量tpperframe rawber

References

[1] 3GPP TS 36.101。“进化的通用地面无线电通道(E-UTRA);用户设备(UE)无线电传输和接收。”第三代合伙项目;技术规格组无线电访问网络。URL:https://www.3gpp.org

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