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Apple Senior Wireless System Engineer – DSP Power Amplifier Linearization United States, California, Cupertino 45639266
06.06.2024
Description
In this role, core responsibilities include, but are not limited to, the following:•Design and simulate state-of-the-art wireless transmitter for very high data rate applications.•Investigate innovative PA architectures, calibration algorithms, processing structures for performance enhancement.•Architect HW/FW/SW partitioning of various calibrations for area and time efficiency.•Implement system models of the analog front-end design, impairments and come up with right controls and calibrations in C and MATLAB for optimal system performances.•Work with digital designers to realize these methods with power and area efficient digital implementations.•Work with firmware designers to realize these methods with high efficiency software implementation, and possibility hardware acceleration.•Bring up, test and characterize real silicon with relevant implementation in lab.
Key Qualifications
- Extensive experience in designing relevant signal processing for wireless communications systems.
- Proven track record of optimization algorithm and its applications to RF calibration
- Good understanding of the methods to estimate various RF impairments via direct equipment measurement or self-testing via loopback.
- Experiences in digital predistortion, crest-factor reduction, nonlinear crosstalk/interference cancellation, and real-chip bring-up in lab
- MATLAB or Python or C/C++ for algorithm development, modeling and simulation.
- Hands on experience on lab testing and characterization (such as spectrum analyzer, signal generator, signal analyzer, power meter, etc.).
- Some understanding of RF and analog components/modules composited of wireless communication systems, the possible impairments from those components, their impact to MIMO OFDM signals, and the corresponding calibration and impairment reduction methods/algorithms.
- Preferred to understand communication theory & signal processing related algorithms design (such as timing recovery, signal estimation and detection, automatic gain control, channel estimation, equalization, coding theory, etc.)
- Preferred to have some knowledge in existing wireless communication protocols: 5G-NR/LTE/WCDMA/GSM, 802.11 WiFi, and/or Bluetooth/BLE
- Course works and experience in circuit design – a plus
Education & Experience
BS and 10+ years of relevant experience required. MSEE/PhD preferred
Pay & Benefits
- At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $170,700 and $300,200, and your base pay will depend on your skills, qualifications, experience, and location.Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.
Apple is an equal opportunity employer that is committed to inclusion and diversity. We take affirmative action to ensure equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics.
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