Cellular 5G

3 weeks ago

bangalore, India Apple Full time
Summary:
Do you have a passion for invention and self-challenge? Do you thrive on pushing the limits of what’s considered feasible? As part of an extraordinary modem team, you’ll craft sophisticated & pioneering embedded firmware that deliver more performance in our products than ever before. You’ll work across subject areas to transform improved hardware elements into a single, integrated design. Join us, and you’ll help us innovate new wireless systems technologies that continually outperform the previous iterations By collaborating with other product development groups across Apple, you’ll push the industry boundaries of what wireless systems can do and improve the product experience for our customers across the world. As a Cellular 5G/4G Physical Layer Firmware Engineer on this team, you will be at the center of the embedded 5G/4G/multimode cellular firmware effort within a silicon design group responsible for crafting and productizing state-of-the-art cellular SoCs. We are looking for someone comfortable with all aspects of embedded software development, who thrives in a dynamic multi-functional organization, is not afraid to debate ideas openly, and is flexible enough to pivot on constantly evolving requirements.
Key Qualifications:
Experience with hardware control for physical layer4G/5G data path processingUnderstanding of 5G and 4G 3GPP protocols Experience implementing digital signal processing algorithms using special purpose digital signal processing HW. Strong understanding of linear algebra and digital signal processing principles. Deep understanding of software engineering principles, and core computer science fundamentals. Fundamental facility with C and C++, compilers, build and source code control tools. Significant experience with memory constrained Real Time Operating Systems (RTOS) and concurrent programming. Solid understanding of computer architecture with particular emphasis on the HW/SW interfaces of high speed communication subsystems. Experience with silicon prototyping, emulation systems, and virtual platforms. Proficiency debugging embedded software systems. Familiarity with UARTs, JTAG, and oscilloscopes. Some mainstream OS application level development and Python or Perl scripting experience.
Description:
- Implement key 3GPP protocols and control/data path processing algorithms with very tight time, latency and energy budgets by interfacing to specialized cellular ASIC hardware. - Examples of processing include 3GPP channels and procedures such as PDCCH, PDSCH,PBCH,PUCCH, PUSCH, PRACH, UL/DL HARQ, Tracking loops. - Examples of 3GPP algorithmic areas include: - Channel Estimation - Channel State Feedback - Interference Cancellation - Cell Search and Measurement - Beam Measurement - Work with systems engineers to refine signal processing algorithms for efficient firmware/hardware execution - Work with silicon designers to define HW interfaces, processors, bus, DMA, accelerator, and memory subsystems. - Specify, design, and implement the firmware architecture of an innovative mobile wireless communications system. - Assist in the development of pre-silicon emulation systems/virtual platforms and use them for pre-silicon FW design and HW verification. - Evaluate and implement pioneering tools for build, formal verification and test. - Define methodologies and best practices.
Additional Requirements:

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