GUILLERMO EVARISTO PEREZ LOPEZ

• Working on calibrating the anechoic chamber as per CTIA 3.2.1. • 2G/3G pre-testing. • Quantifying the effects of one cellular technology on another: o Determining the effect of placing antennas at different heights over the received signal. o GPS receiver over the adjacent Downlink channel of LTE, and vice-versa. • Performance testing as WiFi testing Engineer: o Measuring the transmit power and receiver sensitivity of Wi-Fi AP. o Beamforming feature in Wi-Fi AP. • Project management.

Job Responsibilities: • Executing GCF and PTCRB test cases for different LTE bands for RF, Protocol and RRM, GSM/GPRS/EGPRS, WCDMA and HSPA. • Validating the test results as per 3GPP test spec 36.521-1 for RF LTE, 36.521-3 for RRM LTE and 36.523 for Protocol LTE.

Job Responsibilities: • Analyzing the requirements from the customer for creating new features, creating MR (maintenance release) for the existing applications, developing new applications etc. • Implementing the requirements using embedded SQL in C and NSDK. • QA testing of the implementation in the simulated environment before implementing it on the actual production system.

Job Responsibilities: • Using MATLAB to implement a comercial application, whose patent has been conceded, to measure and assess the acoustic intelligibility level of a room in real time using voice signal based on RASTI & STI index. • Field testing of the implementation in different environments for accuracy testing of the implementation. • Implementing the Matlab solution in Protoboard using C and assembly language. • Publication of a paper on Tecniacústica2010 Congress. October 2010