5G RAN L1/PHY Engineer Position

Type of contract: Full-time, Permanent

Position: 5G RAN L1/PHY Engineer

Date: As of now

Location: USA

The candidate must be U.S.-based and authorized to work in the U.S.

Job Description:

The OAI L1 5G stack is a fully open-source implementation of the 5G/NR physical layer (3GPP 38.2xx, Rel. 15), written in C and running on generic Intel/AMD-based and ARM-based CPUs. For both the gNB and UE, it supports all FR1 bandwidths with 256-QAM as well as SISO and 2-layer MIMO in downlink and uplink, and 100 and 200 MHz bandwidths in FR2. It supports all control and transport channels necessary for operation in 5G standalone (SA) mode, as well as SRS and CSI-RS for MIMO operation. The full list of supported features can be found here: https://gitlab.eurecom.fr/oai/openairinterface5g/-/blob/develop/doc/FEATURE_SET.md#gnb-phy.

You will contribute to the improvement of the 5G L1/PHY stack of OAI. Specifically, you will start working on the L1/PHY of the gNB:

• Support with the implementation of digital beamforming in the downlink
• Support with the integration of the OSC xran library in OAI, and test of the 7.2 interface
• Refactoring of the existing L1 code base towards a more efficient implementation, writing of tests

We are looking for a telecom dev software engineer with very good knowledge of C/C++. The applicant should have very good knowledge of 3GPP 38.2xx and 38.331 specifications in Release 15+. This means that the applicant should have a background in implementing 3GPP in code (L1 required, L2/L3 as a bonus).

Prior experience with 5G/NR L1 in other implementations and the MATLAB toolbox is a strong plus.

Working on the UE L1/PHY stack can be a possible follow-up.

Gitlab link: https://gitlab.eurecom.fr/oai/openairinterface5g/

Required/Mandatory Skills:

• Very strong C/C++ skills
• Very good knowledge of 3GPP 38.2xx and 38.331 specifications in Rel.15+
• Solid experience in RAN software development (L1 experience required, L2/L3 is a bonus) and using SIMD intrinsics
• Very good understanding of Git SCM
• Experience with 5G/NR L1 implementations or MATLAB is a plus.

Qualification:

• Work experience of a minimum of 3 years
• Master's degree in Computer Science, Telecommunications, or equivalent
• Strong analytical skills and problem-solving attitude
• Good interpersonal and teamwork skills to collaborate and work well with others :)
• Fluency in written and spoken English

Workspace language: English

Salary: Negotiable

Benefits of working with us

• Exposure to open source communities around telecom
• Possibility of participating in telecom and/or open source events (MWC, ORAN Meetings or Demos, OAI Workshop, …)