同步和接收机设计
对前端接收机和同步组件进行建模与仿真，包括 AGC、I/Q 不平衡校正、DC 阻断以及定时和载波同步。
函数
iqcoef2imbal | Convert compensator coefficient to amplitude and phase imbalance |
iqimbal2coef | Convert I/Q imbalance to compensator coefficient |
channelDelay | Channel timing delay |
ofdmChannelResponse | Calculate OFDM channel response (自 R2023a 起) |
timingEstimate | Estimate timing offset for communication signals (自 R2024a 起) |
对象
comm.AGC | Adaptively adjust gain for constant signal level output |
comm.CarrierSynchronizer | Compensate for carrier frequency offset |
comm.SymbolSynchronizer | Correct symbol timing clock skew |
comm.PreambleDetector | Detect preamble in data |
comm.CoarseFrequencyCompensator | Compensate for frequency offset of PAM, PSK, or QAM signal |
comm.IQImbalanceCompensator | Compensate for IQ imbalance |
comm.DiscreteTimeVCO | Generate variable frequency sinusoid |
comm.GMSKTimingSynchronizer | Recover symbol timing phase using fourth-order nonlinearity method |
comm.MSKTimingSynchronizer | Recover symbol timing phase using fourth-order nonlinearity method |
模块
| AGC | Adaptively adjust gain for constant signal-level output |
| Carrier Synchronizer | Compensate for carrier frequency offset |
| Symbol Synchronizer | Correct symbol timing clock skew |
| Preamble Detector | Detect preamble in data packet |
| Coarse Frequency Compensator | Compensate for carrier frequency offset in PAM, PSK, or QAM |
| 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 |
| MSK-Type Signal Timing Recovery | Recover symbol timing phase using fourth-order nonlinearity method |
| OFDM Channel Response | Calculate OFDM channel response (自 R2023a 起) |
主题
MATLAB
- MSK Signal Recovery
Model channel impairments such as timing phase offset, carrier frequency offset, and carrier phase offset for a minimum shift keying (MSK) signal.
Simulink
- MSK Signal Recovery in Simulink
Correct channel impairments for a minimum shift keying (MSK) signal by using a Simulink® model.
精选示例
QPSK Transmitter and Receiver
Simulate a QPSK transmitter and receiver.
QPSK Transmitter and Receiver in Simulink
Model a QPSK transmitter and receiver in Simulink.
RF Satellite Link
Simulate a satellite link that models amplifier impairments by using a Memoryless Nonlinearity block.
Top-Down Design of RF Receiver
Design an RF receiver for a ZigBee®-like application using a top-down methodology.
OFDM Synchronization
Demonstrate a method for digital communication with OFDM synchronization based upon the IEEE® 802.11a™ standard.
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.
RF Noise Modeling
Use the RF Blockset Circuit Envelope library to simulate noise and calculate noise power.
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).
CORDIC-Based QPSK Carrier Synchronization
Model a CORDIC (COordinate Rotation DIgital Computer) rotation algorithm in a digital PLL (Phase Locked Loop) implementation for QPSK carrier synchronization.
Defense Communications: US MIL-STD-188-110A Receiver
Model a communications system compliant with the U. S. MIL-STD-188-110A military standard.
OFDM Transmitter and Receiver
Simulate an end-to-end OFDM transmission system for a single-input, single-output (SISO) channel.
