Sr. DSP and Wireless Systems Engineer, Digital RF Systems

Amazon; San Diego (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

A leading technology company based in San Diego seeks a Sr. DSP and Wireless Systems Engineer. You will define DSP architecture and develop algorithms for RF systems. Ideal candidates have 7+ years of experience in wireless DSP engineering, familiarity with MATLAB, Python, C/C++, and understanding RF systems. This role involves working closely with cross-disciplinary teams to optimize system performance for satellite communication systems.

Qualifications

• 7+ years of relevant experience in wireless DSP/RF systems engineering.
• In-depth knowledge of DSP design for low power consumption ASIC.
• Solid understanding of RF blocks and components.

Responsibilities

• Design and model DSP algorithms for RF systems.
• Collaborate with RTL/RFIC designers to drive chip specifications.
• Develop and optimize algorithms for RF SOC and phased array systems.

Skills

Wireless DSP/RF systems engineering

MATLAB

Python

C/C++

OFDM understanding

Beamforming algorithms

MIMO

RF impairment estimation

Education

MSEE/PhD in digital signal processing

Tools

Spectrum analyzer

Signal generators

High speed oscilloscopes

Logic analyzers

Job description

Description

Job summary

Project Kuiper is an initiative to launch a constellation of Low Earth Orbit satellites that will provide low-latency, high-speed broadband connectivity to unserved and underserved communities around the world.

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The Role:

As a Sr. DSP and Wireless Systems Engineer working in the Digital RF Systems team, you will be responsible for DSP architecture definition, design and simulation of DSP blocks in wireless communication SOCs that are used in Kuiper phased array systems. You will be implementing end-to-end system models including fixed point DSP blocks, RF impairments of the radio, phased array antenna and satellite channel. You will be involved in novel techniques to estimate and correct RF impairments that will be implemented in HW and FW. Based on the system level constraints such as low power and cost, you will develop optimized solutions to support high throughput for our customers.

As a Sr. DSP Engineer, you will engage with an experienced cross-disciplinary staff to conceive and design innovative product solutions. You will work closely with internal inter-disciplinary teams such as ASIC/RFIC designers, FW/SW engineers, design verification engineers. You will drive key aspects of the silicon design as well as the entire RF line-up. You will support validation of the silicon in the lab and optimize RF performance via algorithms.

Responsibilities:

• Design and model DSP algorithms such as beamforming, MIMO, DPD, CFR, digital cancellation schemes and RF impairment compensation
• Model RF transceivers impairments and develop RF impairment compensation algorithms
• Collaborate with RTL/RFIC designers, communication systems and software engineers to drive chip and system specifications
• Develop and optimize HW/SW calibration algorithms for RF SOC and phased array systems
• Architect HW and FW partitioning of calibration algorithms
• Develop detailed test plans and test procedures for pre-silicon, help with design verification as well as post silicon validation, integration 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

Export Control Requirement:

Due to applicable export control laws and regulations, candidates must be a U.S. citizen or national, U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Basic Qualifications:

• 7+ 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
• Experience with MATLAB, Python and/or C/C++ for fixed point DSP algorithm development, modeling and simulation
• Solid understanding of OFDM, AGC, beamforming algorithms, MIMO, channel estimation, equalization techniques
• Solid 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
• MSEE/PhD is highly preferred with emphasis on digital signal processing and wireless communication systems

Preferred Qualifications:

• 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

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

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