Cellular PHY Systems Engineer

4 weeks ago

Sunnyvale, California, United States Apple Full time

Role Summary

We are seeking a talented engineer with experience in modem design to join our exciting team of innovators working on best-in-class modem platforms.

In this role, you will join the system engineering team developing innovative algorithms and leveraging our unique end-to-end design.

Key Responsibilities

  • Design and simulate state-of-the-art physical layer wireless communication algorithms.
  • Implement system models and perform detailed performance investigations to allow performance sign-off and enable RTL development.
  • Collaborate with digital designers and firmware developers to realize algorithms with optimal PPA (performance/power/area) trade-off.
  • Work with verification teams to define functional and performance test plans, and support the silicon bring-up.
  • Contribute to productization efforts through trouble-shooting of issues found in lab and field, and algorithm optimization using data from real-life use cases.

Requirements

  • In-depth knowledge of wireless communication systems with hands-on experience in lab testing & characterization.
  • Experience with wireless and/or cellular communication standards is a plus (specially on 5G NR).
  • Deep-knowledge of communication system theory and signal processing will be essential for this role to design algorithms related to channel state feedback, digital precoding and analog beamforming, link adaptation, channel estimation, interference mitigation, MIMO detection, multi-user MIMO, timing and frequency recovery, automatic gain control, RF impairments estimation and correction, forward-error correction, OFDM, etc.
  • Experience with Matlab, C/C++ and/or Python for algorithm development, modeling (floating-point and fixed-point) and link-level simulation.
  • Strong analytical skills (linear algebra, random processes, detection and estimation, filter design, machine learning, etc.).
  • Experience in PPA (power/performance/area) optimization including complexity analysis, mapping to vector signal processors, memory and MIPS estimation, real-time vs non-real time partition, interface definition, RF and BB power saving options.
  • Experience in chip bring-up including analysis of UE and/or test equipment logs, being familiar with relevant KPI metrics (UDP/TCP DL/UL Throughput, E2E latency, call establishment, call retention, audio quality metrics such as POLQA, etc.).

Education & Experience

BS and 3+ years of relevant experience.

Additional Requirements

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 $143,100 and $264,200, and your base pay will depend on your skills, qualifications, experience, and location.

Apple employees also have the opportunity to become an Apple shareholder through participation in Apple's discretionary employee stock programs.

Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple's Employee Stock Purchase Plan.

You'll also receive benefits including:

Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition.

Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation.

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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