Gerald Marx Email & Phone Number

San Francisco Bay Area

Neubiberg, München, De

Development of C++ software under the QT framework which allows for accurate measurement of RF metrices such as IIP3/OIP3, noise figure, gain and power linearity, spurious response, and isolation between transceiver chains. Utilization of hardware FFT and I/Q samples from SDR receive chain for receive characterizations. Software interface to RF instruments.

Mountain View, Ca, Us

Audacy was an early stage startup company that focused on developing a wireless communication network including client terminal hardware solutions that would allow for small Low Earth Orbit satellites to maintain an uninterrupted communication link to Earth based ground stations.Key member on a small team that overcame great challenges to develop the company’s first satellite called Audacy Zero. Technical focus in the areas of software architecture, embedded systems and software, networking software, wireless PHY and MAC layer software, and wireless PHY / MAC performance characterization.

San Diego, Ca, Us

Internet of Things wireless SOC development. Focus on wireless coexistence, WLAN regulatory, tools and software for WLAN radio calibration and verification, the overall manufacturing flow definition, and associated firmware and software development. WLAN (802.11ac) radio development for access point market. Focus on software used for or performing WLAN receiver and transmitter radio calibration and analyzing associated system level performance including transmit beamforming. My work has spanned software and firmware development as well as algorithms associated with calibration.

Palo Alto, California, Us

Bluetooth ASIC development. Primary focus on BR/EDR Controller firmware architecture, design including hardware / firmware tradeoffs, and implementation. Work spans all layers of the Bluetooth controller stack, boot mode, data transports (SDIO, UART, USB, SPI), low power modes, ROM patching, and L2CAP. Firmware written in C, C++, and assembly. Utilized ThreadX along with a custom task scheduler on ARM7 and Cortex M3 based ASICs. Worked directly with tier 1 customer engineers to bring well known products to market on time.Examples of work:• Leading edge low power mode based on a low latency reconnection method that eliminates the need to maintain the Bluetooth Classic wireless connection between HID and host side devices in a sniff state. Architecture and implementation for this protocol that spans the MAC layer up to interface with the Host. Firmware integrated into low power state machine of the HID stack. • Innovative scanning method which results in reduced Host Controller power consumption. Method is based on sharing an external crystal at opportune times with the baseband processor of the Host. Quantified improvement using current consumption data coupled with simulation.

• Design, simulation, and firmware implementation of a low power mode method for a GSM ASIC. US patent awarded.• Simulation and implementation of the Enhanced Full Rate voice compression algorithm within a custom DSP embedded within the GSM ASIC.• System level numerical simulation and test vector generation related to the wireless PHY of a satellite modem ASIC.

Software, DSP firmware, and systems engineering related to optical based products