射频组件建模

行为射频组件建模和损伤校正

应用射频损伤和校正。对包含放大器、混频器和数字预失真 (DPD) 的射频前端设计进行建模。

App

Create, impair, visualize, and export modulated waveforms

函数

损伤

`fspl`	Free space path loss
`frequencyOffset`	Apply frequency offset to input signal (自 R2022a 起)
`iqimbal`	Apply I/Q imbalance to input signal
`iqcoef2imbal`	Convert compensator coefficient to amplitude and phase imbalance
`iqimbal2coef`	Convert I/Q imbalance to compensator coefficient
`srmdelay`	Compute delay introduced by Sample-Rate Match block (自 R2022b 起)

可视化相位噪声滤波器

plotPhaseNoiseFilter Plot response of phase noise filter block

对象

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损伤和组件

`comm.MemorylessNonlinearity`	Apply memoryless nonlinearity to complex baseband signal
`comm.MultibandCombiner`	Frequency-shift and combine signals (自 R2021b 起)
`comm.PhaseFrequencyOffset`	Apply phase and frequency offsets to input signal
`comm.PhaseNoise`	Apply phase noise to baseband signal
`comm.SampleRateOffset`	Apply sample rate offset to signal (自 R2021b 起)
`comm.ThermalNoise`	Add thermal noise to signal

损伤校正

`comm.AGC`	Adaptively adjust gain for constant signal level output
`comm.CoarseFrequencyCompensator`	Compensate for frequency offset of PAM, PSK, or QAM signal
`dsp.DCBlocker`	阻断输入信号中的 DC 分量（偏移量）
`comm.DPD`	Digital predistorter
`comm.DPDCoefficientEstimator`	Estimate memory-polynomial coefficients for digital predistortion
`comm.IQImbalanceCompensator`	Compensate for IQ imbalance

模块

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损伤和组件

Complex Phase Difference	Phase difference between two complex signals
Complex Phase Shift	Apply complex phase shift to complex signal
Free Space Path Loss	Apply free space path loss to complex signal
I/Q Imbalance	Apply I/Q imbalances to complex signal
Memoryless Nonlinearity	Apply amplifier models to complex baseband signal
Multiband Combiner	Frequency-shift and combine signals (自 R2021b 起)
Phase/Frequency Offset	Apply phase and frequency offsets to complex baseband signal
Phase Noise	Apply receiver phase noise to complex baseband signal
Receiver Thermal Noise	Apply receiver thermal noise to complex signal
Sample-Rate Match	Upsample two signals to common rate (自 R2022b 起)
Sample Rate Offset	Apply sample rate offset to input signal (自 R2022b 起)

损伤校正

AGC	Adaptively adjust gain for constant signal-level output
Coarse Frequency Compensator	Compensate for carrier frequency offset in PAM, PSK, or QAM
DC Blocker	Block DC component
DPD	Digital predistorter
DPD Coefficient Estimator	Estimate memory-polynomial coefficients for digital predistortion
I/Q Compensator Coefficient to Imbalance	Convert compensator coefficient into amplitude and phase imbalance
I/Q Imbalance Compensator	Compensate for imbalance between in-phase and quadrature components
I/Q Imbalance to Compensator Coefficient	Converts amplitude and phase imbalance into I/Q compensator coefficient

实用工具

Complex Phase Difference	Phase difference between two complex signals
Complex Phase Shift	Apply complex phase shift to complex signal

主题

Top-Down Design of RF Receiver
Design an RF receiver for a ZigBee®-like application using a top-down methodology.
Visualize RF Impairments
Apply various RF impairments to a QAM signal.

精选示例

ACS Test Waveform Generation for 5G NR Receiver Testing

Generate waveform for ACS receiver test, as defined in TS 38.141-1, Section 7.4.1.

(5G Toolbox)

自 R2024b 起

Simulate and Verify Power Amplifier Backoff

Use backoff to scale a signal prior to inputting it to a table-based power amplifier.

打开实时脚本

RF Noise Modeling

Use the RF Blockset™ Circuit Envelope library to simulate noise and calculate noise power.

打开模型

Impact of Thermal Noise on Communication System Performance

Use the RF Blockset Circuit Envelope library to model thermal noise in a super-heterodyne RF receiver and measure its effects on a communications system noise figure (NF) and bit error rate (BER).

打开模型

Architectural Design of a Low IF Receiver System

Use the RF Blockset Circuit Envelope library to simulate the performance of a Low IF architecture with RF impairments.

打开脚本

Adjacent and Co-Channel Interference

Use PSK-modulated signals to show the effects of adjacent and co-channel interference on a transmitted signal.

打开模型

OSTBC Transmission with Antenna Coupling

Simulate the effects of antenna mutual coupling on the performance of an orthogonal space-time block code (OSTBC) transmission over a multiple-input multiple-output (MIMO) channel.

打开实时脚本

Power Amplifier Characterization

Characterize a power amplifier using measured input and output signals of an NXP Airfast PA.

打开实时脚本

Digital Predistortion to Compensate for Power Amplifier Nonlinearities

Use digital predistortion (DPD) in a transmitter to offset the effects of nonlinearities in a power amplifier.

打开脚本

Impact of RF Effects on Communication System Performance

Model thermal noise, phase noise, and nonlinearity impairments of an RF transceiver in Simulink^®.

打开脚本

Effect of a High-Power Interferer on ADC Performance

Effect of a high-power in-band or out-of-band interferer on the performance of a communications system with an analog-to-digital converter (ADC).

打开脚本