RF 컴포넌트 모델링

RF 무선 통신 동작 모델링 및 손상 보정

RF 손상 및 보정을 적용합니다. 증폭기, 믹서 및 디지털 전치왜곡(DPD)을 포함하는 RF 프론트엔드 설계를 모델링합니다.

앱

변조된 파형을 생성, 손상 추가, 시각화 및 내보내기

함수

손상

`fspl`	자유 공간 경로 손실
`frequencyOffset`	입력 신호에 주파수 오프셋 적용 (R2022a 이후)
`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 (R2022b 이후)

위상 잡음 필터 시각화

plotPhaseNoiseFilter Plot response of phase noise filter block

객체

모두 확장

손상 및 컴포넌트

`comm.MemorylessNonlinearity`	Apply memoryless nonlinearity to complex baseband signal
`comm.MultibandCombiner`	Frequency-shift and combine signals (R2021b 이후)
`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 (R2021b 이후)
`comm.ThermalNoise`	Add thermal noise to signal

손상 보정

`comm.AGC`	Adaptively adjust gain for constant signal level output
`comm.CoarseFrequencyCompensator`	Compensate for frequency offset of PAM, PSK, or QAM signal
`dsp.DCBlocker`	입력 신호에서 DC 성분(오프셋) 차단
`comm.DPD`	Digital predistorter
`comm.DPDCoefficientEstimator`	Estimate memory-polynomial coefficients for digital predistortion
`comm.IQImbalanceCompensator`	Compensate for IQ imbalance

블록

모두 확장

손상 및 컴포넌트

Complex Phase Difference	Phase difference between two complex signals
Complex Phase Shift	복소 신호에 복소 위상 변위 적용
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 (R2021b 이후)
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 (R2022b 이후)
Sample Rate Offset	Apply sample rate offset to input signal (R2022b 이후)

손상 보정

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

유틸리티

Complex Phase Difference	Phase difference between two complex signals
Complex Phase Shift	복소 신호에 복소 위상 변위 적용

도움말 항목

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.

추천 예제

Simulate and Verify Power Amplifier Backoff

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

라이브 스크립트 열기

RF Noise Modeling

Use the RF Blockset™ Circuit Envelope library to simulate noise and calculate noise power. Results are compared against theoretical calculations and a Communications Toolbox™ reference model.

모델 열기

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). A Communications Toolbox™ reference model with parameters computed using Friis equations and a RF Blockset Noise Testbench are used to verify the results.

모델 열기

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 the following RF impairments:

스크립트 열기

Adjacent and Co-Channel Interference

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

모델 열기

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.

라이브 스크립트 열기

Power Amplifier Characterization

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

라이브 스크립트 열기

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. This example use power amplifier models that were obtained from Power Amplifier Characterization example to simulate two cases. In the first simulation, the RF transmitter sends two tones. In the second simulation, the RF transmitter sends a 5G-like OFDM waveform with 100 MHz bandwidth.

스크립트 열기

Impact of RF Effects on Communication System Performance

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

모델 열기

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).

스크립트 열기