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Amazon · 1 day ago

DSP and Wireless Systems Engineer, Digital RF Systems

San Diego, California, USA

Full-time

Onsite

Mid, Senior Level

$130K/yr - $213K/yr

5+ years exp

Amazon Technologies, Inc. is launching a constellation of Low Earth Orbit satellites to provide broadband connectivity. The DSP Engineer will focus on designing and simulating DSP blocks for wireless communication systems, collaborating with cross-disciplinary teams to develop optimized solutions for high throughput.

Artificial Intelligence (AI)DeliveryE-CommerceRetail

No H1B

U.S. Citizen Only

Responsibilities

Design and model DSP algorithms such as beamformer, DPD, CFR, digital cancellation schemes and RF impairment compensation blocks

Model RF transceivers impairments and develop RF impairment compensation algorithms

Collaborate with RFIC/analog designers, communication systems and software engineers to drive chip specifications

Develop and optimize HW/SW calibration methods for RF SOC and phased array systems

Architect HW and FW partitioning of calibration algorithms

Develop detailed test plans and test procedures for validation and characterization of RF Wireless SOC performance

Involve in chip bring-up in the lab and optimize conducted and/or OTA throughput performances by collaboratively working with cross functional teams

Characterize and enhance RF performance of the wireless SOC and help integration of the silicon into Leo phased array systems

Qualification

Wireless DSP/RF systemsMATLABPythonC++RF impairment compensationLow power ASIC designRF blocks understandingFW implementationChip validationCommunication TheoryPhased array systemsLab equipment usage

Required

Experience in developing link and system level simulators using MATLAB, Python, or C++

5+ years of relevant experience in wireless DSP/RF systems engineering (LTE, 5G-NR, WiFi 802.11, BLE)

In depth knowledge of DSP design for low power consumption ASIC

Good understanding of RF blocks and components

Experience in RF impairment estimation and compensation techniques

Working knowledge of FW implementation of various DSP algorithms

Experience in using lab equipment, bring-up and validation of chip

Preferred

Master's degree in Electrical or Communications Engineering or a related field

Experience with current and upcoming RF standards in cellular (4G/5G NR), WiMAX, 802.11ad, microwave backhaul, or related broadband wireless standards

Strong background in Communication Theory (signal estimation and detection, AGC, channel estimation), OFDM, MIMO, Digital/Wireless Communication Systems and engineering

Extensive experience in designing low power/area digital signal processing blocks for Wireless RF SOCs

Excellent understanding of RF architectures and blocks used in the Wireless SOCs

MATLAB, Python, C++ experience with emphasis on fixed point modeling of DSP blocks, RF impairment modeling, RF calibration algorithm development, system performance simulations (EVM, ACRL, OOB emissions)

Experience with bit-accurate modeling to match RTL implementations, emulations, FW development

Familiarity with phased array systems and phased array performance optimization techniques

Experience in silicon bring-up in the lab and using lab equipment such as vector spectrum analyzer, signal generators, high speed scopes and logic analyzers