PA nonlinearities due to DC power limitation when the amplifier works in the saturation regionĪdapt the power level of the baseband waveform to the RF configuration by adding a Gain Control block after the Input Buffer block.Īs the current RF Transmitter Subsystem block configuration sends one sample at a time, the Output Buffer block (after the RF Transmitter Subsystem block) collects all samples within an HE SU packet before sending the samples onto the Demodulation and EVM calculation block. Phase noise as an effect directly related to the thermal noise within the active devices of the oscillator I/Q imbalance as a result of gain or phase mismatches between the parallel sections of the transmitter chain dealing with the IQ signal paths This model supports Normal and Accelerator simulation modes. The Simulink model uses WLAN Toolbox and DSP System Toolbox™ features to process the baseband signal (steps 1, 2, and 5-8) and uses RF Blockset blocks to model the RF transmitter (steps 3 and 4). This block models the impairments introduced by an RF transmitter using RF Blockset blocks.Ĭalculate the occupied bandwidth and channel power and depict the spectral mask by using the Spectrum Analyzer block.Ĭompute the CCDF and PAPR by using the CCDF and PAPR block.ĭownsample and filter the waveform by using an FIR Decimation block.Įxtract the data symbols and measure the EVM by demodulating the baseband waveform. Model the effects of upconverting the waveform to the carrier frequency by using the RF Transmitter Subsystem block. The model uses an RF intermediate frequency to carry the baseband information in RF Blockset. Import the baseband waveform into the RF Transmitter Subsystem block implemented by using RF Blockset blocks. Oversample and filter the waveform by using an FIR Interpolation block. Generate the baseband 802.11ax waveform by using WLAN Toolbox features.
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