Software Stack for 4G/LTE User Equipment (UE)

Orthogone is recognized as a leader in embedded software design. Needless to say that our software engineering team likes challenges. For this project, Orthogone was involved in the architecture, design, integration, and optimization of a 4G LTE/LTE-A User Equipment (UE) System-on-a-Chip (SoC). We have also participated in several field trials and demonstrations that led to a successful company acquisition by a large semiconductor company.

Our software engineering team implemented several algorithms to improve throughput and power consumption performances. This project was a clear example of how Orthogone’s team excels at optimizing software performances even when working with limited resources. The throughput of the 4G LTE/LTE-A UE was optimized by a factor of eighty after our team re-architected and re-designed the traffic flow and the buffer management between the different embedded processors of the SoC. The project was a success despite the very aggressive project schedules.

A few examples of key modules implemented by Orthogone are:

  • FFT Processor
  • Buffer Management
  • MIMO Decoder
  • FEC Decoder, CRC Checker
  • Channel Estimation
  • Soft Demapper
  • HARQ


“We were looking for unique solutions to some of the product development challenges we were facing. Having worked with Orthogone on other projects we knew we could rely on their engineering support. 

We are very satisfied with Orthogone’s work in the development of our rain sensor product - from software coding to algorithm modeling. In the process, Orthogone also helped us document a product development methodology that not only satisfied our customer but also was used to obtain our CMMI Certificate.”

- Scott Brown

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