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About the Role

As a leading technology innovator, Qualcomm drives the evolution of wireless connectivity with industry-leading modem innovations across 5G and next-generation cellular technologies. This role involves building next-generation wireless technologies including 5G NR and emerging 6G systems, with opportunities to apply AI/ML techniques. You will work closely with cross-functional teams to integrate, test, characterize, certify, and commercialize 6G/5G modem products for global markets, directly impacting their quality, performance, and commercialization.

Responsibilities

Support verification and performance evaluation for complex digital modem products across 6G and 5G cellular technologies in carrier lab, infra vendor lab, field, and with test equipment like protocol simulators.
Validate end-to-end system functionality and performance across the cellular protocol stack (PHY, MAC/RLC/PDCP, RRC, NAS, TCP/IP).
Define modem key performance indicators and evaluate system performance, optimizing based on data from conducted, radiated, and live 6G/5G network testing.
Develop and execute system-level test strategies, methodologies, and test plans for modem features and use cases.
Analyze 3GPP specifications and carrier requirements, translating them into robust validation scenarios and test coverage.
Perform log analysis, debugging, and root cause investigation of modem issues across lab and field environments.
Support feature integration, certification, and commercialization of global wireless products.

Requirements

3+ years System Test Engineering experience in 5G/4G mobile communications system, protocols, or related work experience.
Strong understanding of digital and wireless communication systems, signal processing, and RF propagation.
Strong understanding of physical layer procedures such as signal detection, channel estimation, link adaptation, mmWave beam refinement, and massive MIMO.
Knowledge of 5G NR PHY, MAC, RLC, PDCP, and RRC protocols.
Knowledge of OFDMA, Wi-Fi, and LTE.
Knowledge of air interface performance analysis, characterization, and optimization.
Experience with test equipment such as protocol simulator call boxes and channel emulators for wireless product verification.
Programming skills in Python, Perl and MATLAB.
Proficient communication and reporting skills.
Speaking Japanese and English is required at operator lab.

Skills

AI/ML concepts and their application to digital communications

Location

Tokyo

Work Type

Full-time

Experience Level

3+ years

Education Level

Bachelor's degree in Engineering, Information Systems, Computer Science, or related field.

About the Company

Qualcomm CDMA Technologies, Y.K. is a leading technology innovator driving the evolution of wireless connectivity.
Qualcomm pushes the boundaries of what's possible to drive the evolution of wireless connectivity, delivering industry-leading modem innovations across 5G and next-generation cellular technologies.
Qualcomm’s modem innovation have enabled breakthrough advances in performance, power efficiency, global interoperability, and commercialization at scale.

Equal Opportunity

Qualcomm is an equal opportunity employer.
If you are an individual with a disability and need an accommodation during the application/hiring process, rest assured that Qualcomm is committed to providing an accessible process.
Upon request, Qualcomm will provide reasonable accommodations to support individuals with disabilities to be able participate in the hiring process.
Qualcomm is also committed to making our workplace accessible for individuals with disabilities.
Qualcomm expects its employees to abide by all applicable policies and procedures, including but not limited to security and other requirements regarding protection of Company confidential information and other confidential and/or proprietary information, to the extent those requirements are permissible under applicable law.