Senior Hardware/Phy Test Engineer
Horsham, Pennsylvania, Us
Created, optimized, and automated test and calibration algorithms for prototype WiMAX mobile devices.▪ Test algorithms: BER (bit error rate), RSSI (received signal strength indicator), signal to noise ratio, EVM (error vector magnitude) at various digital modulation orders (QPSK, 16-QAM, 64-QAM), spectral flatness, adjacent channel power, carrier leakage, co-channel interference, channel rejection, relative receiver BER performance related to repetition coding, and relative receiver BER performance related to diversity schemes, MRC (Maximum Ratio Combining), STC (Space Time Coding), and SM (Spatial Multiplexing).▪ Calibration algorithms: transmitter gain correction and calibration, receiver path loss calibration, crystal calibration, and IQ calibration.