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Job Description & Responsibilities

Persistent Systems is seeking a Principal Wireless Communication Systems Design Engineer to join our team and be based in our NYC headquarters. In this role, you will be part of a best-in-class Ad Hoc Network system engineering development team. You will work closely with the teams like architecture, RF, FPGA, Software and DSP for the FPGA based SDR (software defined radio) design. You will involve the SDR system performance evaluation, data analysis, issues troubleshooting and performance optimization (power efficiency, signal quality, size of logic resources) to meet the System Design Specifications.

Position Responsibilities

• Direct responsibility for development of Crest Factor Reduction, Digital Predistortion and Envelope Tracking
• Provide specifications and reference algorithms for RF, SW and DSP implementations
• Conduct SDR system validation and analysis
• Propose design and process changes for handling RX jamming and multi-radio coexistence issues considering trade-offs and implementation constrains
• Interface with our internal FPGA/DSP group to relay the results of the system performance
• Collaborate to identify and solve performance issues within the RF and FPGA/DSP sub-systems
• Responsible for providing RF transceiver, DPD and ET calibration algorithm and define the testing methods
• Measure, Optimize and ensure baseband application is performing optimally

Job Qualifications & Experience

Minimum Qualifications

• Bachelor's degree in Electrical Engineering, Computer Science, Mathematics, Physics or equivalent and relatable degree
• 15 years of experience in wireless systems design and implementation
• Solid knowledge of wireless communications and digital signal processing
• Deep understanding of Wireless PHY/MAC, RF data-path and control algorithms
• Extensive design and implementation experience in wireless modem and RF transceiver
• In-depth knowledge of wireless RF architecture, RF impairments (Phase Noise, Non-linearity, IQ imbalance) and digital compensation techniques
• Proven expertise and experience in concepts, architectures, implementation, and validation for Crest Factor Reduction (CFR), Digital Predistortion (DPD) and Envelope Tracking (ET) for High Power GaN Power Amplifiers
• Proven understanding on RF link budget, RX AGC operation and optimization techniques in the presence of different jammer conditions
• Solid understanding of calibration concepts of RF transceiver, DPD and ET to meet requirements in high volume production
• Product experience in FPGA based SDR (software defined radio) design and in 802.11 protocol development
• Identify and analyze critical requirements and provide deep dive assessments with respect to critical metric impact, timeline and risks
• Familiarity with standard RF lab equipment, as well as simulation tools such as MATLAB and Python
• Excellent communication skills and people skills as the position requires the ability to work with others
• Applicant must have the ability to obtain a United States Security Clearance

Preferred Qualifications

• Ph.D. in Digital Signal Processing, Electrical Engineering, Computer Science, Mathematics, Physics or equivalent and relatable degree
• Working experience at startup company for SDR development

Total compensation for this role can vary from $180, 000 to $220, 000 a year based on individual qualifications. Eligibility for yearly discretionary bonus. Persistent Systems, LLC offers a comprehensive benefits package including medical, dental, vision, life, and disability insurance; paid time off (sick time and vacation time); flexible spending accounts; 401(k) plan with company match; fitness membership reimbursement; tuition assistance; mental health benefits; and pet discounts.

Company Overview

Headquartered in New York City since 2007, Persistent Systems, LLC is a global communications technology company which develops, manufactures, and integrates a patented and secure Mobile Ad Hoc Networking (MANET) system: Wave Relay. The company's industry leading R& D team has designed wireless networking protocols to support their cutting-edge Wave Relay system and technology. Wave Relay is capable of running data, video, voice and other applications under the most difficult and unpredictable conditions. Their suite of products is field proven and utilized in Commercial, Military, Government, Industrial, Agriculture, Robotics, and Unmanned System markets.

Equal Opportunity Employer - minorities/females/veterans/individuals with disabilities/sexual orientation/gender identity

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