Aeroflex PXI Studio - AEROFLEX - #4

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UMTS MEASUREMENT SUITE A complete suite of measurement functions to characterize UMTS mobile transceiver performance in accordance with ETSI TS 34.121 (3GPP release 6). • Maximum output power • Frequency stability • ACLR • Spectrum emission mask • Phase discontinuity • CCDF • Occupied bandwidth • EVM (Peak and RMS) • Phase and amplitude errors • IQ skew and gain imbalance • Carrier leak • Origin offset • Tx slot timing error • Code domain power • Peak code domain error • Demodulated symbol data for active channels • Enhanced physical channels and HS-DPCCH • Receive sensitivity (BER) using loopback • Fast Sequence Tuning (FST) The UMTS measurement suite enables the measurement of all major 3GPP W-CDMA UE transceiver parameters including RF power, ACLR (adjacent channel leakage ratio), occupied bandwidth, spectrum emission mask, modulation accuracy, frequency stability, code domain power and peak code domain error and receiver sensitivity. The PXI Studio plug-in provides a variety of trace displays including constellation diagram, code domain power and spectral mask. Set up for UMTS uplink measurement requires only user entry of DPCCH slot format 3 and scrambling code. Active channel detection can be set automatically or defined by the user. Measurements can then be made for any user specified or a random timeslot 0 to 14. Figure 8. UMTS plug-in typical screenshot LTE FDD The LTE FDD measurement suite is a library of measurement functions designed to characterize LTE FDD signals in accordance with the requirements of ETSI TS 36.521-1.(3GPP release 8). • Power • Transmit signal quality: • Frequency Error • Error Vector Magnitude (EVM) • IQ skew/Gain Imbalance • Symbol clock error • IQ-component (carrier leak) • In-band emissions for non allocated RB • Spectrum flatness • Output RF spectrum emissions: • Occupied bandwidth • Spectrum Emission Mask • Adjacent Channel Leakage power Ratio • CCDF LTE analysis is supported for uplink (SC-FDMA) transmissions for all bandwidths, 1.4 MHz, to 20 MHz and modulation types QPSK, QAM16 and QAM64. In addition to numerical measurement results, the measurement suite provides trace displays for spectrum emission mask, CCDF, constellation plots, EVM vs. Carrier and EVM vs. Symbol. EVM analysis for uplink PUSCH is supported. A user defined window position can be selected when performing EVM measurements. This helps to track down problems associated with baseband timing and windowing. Figure 9. LTE plug-in typical screenshot