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Motorola Solutions

Builds communications and security technology

Senior Wireless Communication Systems Engineer

Telecommunications EngineeringPosted on Nov 12
Full-timeIrvine, CA, USA

About the Job

Requirements

  • A Master of Science with a minimum of four years of relevant wireless system design experience, or a Ph.D. in Electrical Engineering, Computer Engineering, Communications Engineering, Computer Science, or a related engineering field; wireless communications and signal processing focus is preferred.
  • Hands-on experience designing or integrating wireless modem functions and understanding interactions among the physical, medium access control, and higher layers.
  • Working knowledge of radio-frequency propagation, link budgets, fading, interference, and channel modeling for mobile wireless systems.
  • A strong foundation in digital communications and signal processing, including multiple-input multiple-output, orthogonal frequency-division multiplexing, synchronization, channel estimation, equalization, and channel coding.
  • Understanding of radio-frequency systems and impairments, including automatic gain control, phase noise, carrier and sampling offsets, and in-phase/quadrature imbalance, and their effects on system performance and digital compensation.
  • Proficiency in MATLAB for algorithm development, simulation, data analysis, and performance characterization.
  • U.S. citizenship is required due to clients under U.S. government contracts.
  • Employment is contingent upon successfully clearing a background check.

Responsibilities

  • Translate product and mission needs into measurable wireless system requirements, architecture and interface specifications, and verification plans across the radio-frequency, physical, medium access control, and network layers.
  • Develop and evaluate modem and signal-processing algorithms, including synchronization, channel estimation, multiple-input multiple-output and orthogonal frequency-division multiplexing processing, and adaptation to changing channel conditions.
  • Build link- and system-level models to assess range, throughput, latency, reliability, and performance under mobility, interference, and challenging propagation, and use the results to guide design tradeoffs.
  • Work with FPGA, embedded software, and radio-frequency teams on implementation specifications, fixed-point modeling, test vectors, integration, and performance optimization.
  • Plan and execute simulation, bench, and field tests; correlate measured results with models, investigate performance gaps, and drive issues to resolution.
  • Document architectures, algorithms, assumptions, test methods, and results, and present technical findings and recommendations at design reviews.
  • Assess current products and emerging technologies, identify opportunities to improve performance and robustness, and contribute to future product architecture and enhancements.
  • Travel occasionally to support customer interactions, testing, or demonstrations, as needed.

Desired Qualifications

  • Experience with mobile ad hoc networks, including distributed medium access, routing, mobility, and multi-hop performance.
  • Experience taking wireless systems from simulation and prototype through integration, laboratory characterization, and field validation.
  • Knowledge of radio-frequency front ends, antennas, link budgets, and practical tradeoffs between waveform algorithms and hardware constraints.
  • Experience operating in congested or contested spectrum, including interference detection and mitigation, radio-frequency sensing, or adaptive/cognitive radio.
  • Hands-on fixed-point design and verification, including quantization analysis and reference models for FPGA or embedded software implementations.
  • Experience with radio-frequency test equipment, over-the-air measurements, and systematic laboratory troubleshooting.
  • Working knowledge of TCP/IP networking and its interactions with wireless links and mobile ad hoc networks.
  • Experience using Python or C/C++ for analysis, prototyping, test automation, or debugging.
  • Ability to organize work independently, prioritize competing tasks, and collaborate across systems, radio-frequency, FPGA, software, and test teams.
  • Clear technical writing and communication skills, including the ability to explain performance tradeoffs and test results to colleagues and customers.

About the Company

Motorola Solutions

Builds communications and security technology

Motorola Solutions builds communications and security technology for emergency services, governments and businesses, connecting field teams with control rooms. Its APX radios keep responders in contact, while command center software combines calls, dispatch and incident records. Cameras, access controls and video analytics help organizations monitor buildings and investigate events, alongside body cameras that record work in the field. The company sells devices and network equipment, licenses software, and earns recurring fees from cloud subscriptions, maintenance and managed services. Founded in 1928, Motorola Solutions is headquartered in Chicago, Illinois.

Company size
10,001+
Company stage
IPO
Headquarters
Chicago, IL
Founded
1928

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