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Synchronisation et design du récepteur
Reconstruction de fréquence et de phase de la porteuse, estimation du timing, reconstruction de fréquence et de phase du timing, AGC, compensation du déséquilibre I/Q et boucles à verrouillage de phase
Modélisez et simulez un récepteur et les composants de synchronisation comme l’AGC, la correction du déséquilibre I/Q, le blocage DC et la synchronisation du timing et de la porteuse.
Fonctions
iqcoef2imbal | Convert compensator coefficient to amplitude and phase imbalance |
iqimbal2coef | Convert I/Q imbalance to compensator coefficient |
channelDelay | Channel timing delay (depuis R2020a) |
ofdmChannelResponse | Calculate OFDM channel response (depuis R2023a) |
timingEstimate | Estimate timing offset for communication signals (depuis R2024a) |
Objets
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 |
Blocs
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 (depuis R2023a) |
Rubriques
MATLAB
- Compensate for Frequency Offset Using Coarse and Fine Compensation
Correct for a phase and frequency offset in a noisy QAM signal by using a carrier synchronizer. - Correct Symbol Timing and Doppler Offsets
Correct symbol timing and frequency offset errors by using thecomm.SymbolSynchronizer
andcomm.CarrierSynchronizer
System objects. - 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.