Main Content

Synchronization and Receiver Design

Carrier frequency and phase recovery, timing frequency and phase recovery, AGC, I/Q imbalance compensation, and phase-locked loops

Model and simulate front-end receiver and synchronization components, including AGC, I/Q imbalance correction, DC blocking, and timing and carrier synchronization.

Functions

iqcoef2imbalConvert compensator coefficient to amplitude and phase imbalance
iqimbal2coefConvert I/Q imbalance to compensator coefficient
channelDelayChannel timing delay
ofdmChannelResponseCalculate OFDM channel response

Objects

comm.AGCAdaptively adjust gain for constant signal level output
comm.CarrierSynchronizerCompensate for carrier frequency offset
comm.SymbolSynchronizerCorrect symbol timing clock skew
comm.PreambleDetectorDetect preamble in data
comm.CoarseFrequencyCompensatorCompensate for frequency offset of PAM, PSK, or QAM signal
comm.IQImbalanceCompensatorCompensate for IQ imbalance
comm.DiscreteTimeVCOGenerate variable frequency sinusoid
comm.GMSKTimingSynchronizerRecover symbol timing phase using fourth-order nonlinearity method
comm.MSKTimingSynchronizerRecover symbol timing phase using fourth-order nonlinearity method

Blocks

AGCAdaptively adjust gain for constant signal-level output
Carrier SynchronizerCompensate for carrier frequency offset
Symbol SynchronizerCorrect symbol timing clock skew
Preamble DetectorDetect preamble in data packet
Coarse Frequency CompensatorCompensate for carrier frequency offset for PAM, PSK, or QAM
I/Q Compensator Coefficient to ImbalanceConvert 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 CoefficientConverts amplitude and phase imbalance into I/Q compensator coefficient
MSK-Type Signal Timing RecoveryRecover symbol timing phase using fourth-order nonlinearity method
OFDM Channel ResponseCalculate OFDM channel response

Topics

MATLAB

Simulink

  • MSK Signal Recovery
    This model shows how channel impairments such as timing phase offset, carrier frequency offset, and phase offset for a minimum shift keying (MSK) signal are modeled.