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Shared Correlation Accelerator for an RF SoC

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A drone taxi combines the data from a satellite and a cellular basestation.


We are currently working on designing Radio Frequency (RF) Systems on a chip (SoCs) for the Internet of Things (IoT). Requirements for these devices often include data connectivity and location information. A drone may, for instance, use both GPS and cellular positioning to increase the accuracy of the location estimate. We want to integrate both functionalities on a single chip.

Positioning and network synchronization rely on performing a large number of cross-correlations in real-time. Due to the large throughput requirements, large accelerators are required. Instead of using a dedicated circuit for each standard, we would like to share a single, flexible accelerator for all these tasks.

Project Description

Concept for the shared correlation accelerator.

The goal of this project is, to develop a shared correlation accelerator for our RF SoC. This unit should support both positioning, as well as the synchronization for NB-IoT and eMTC. To do this, you will study the algorithms to quickly calculate a large number of cross-correlations. Using this knowledge, you will develop the accelerator in VHDL, or using High-Level Synthesis (HLS). It should be able to meet the throughput requirements of 100M correlation results/s, while keeping the area as low as possible.

Once you have implemented and verified the unit, you may tape out your own chip, or test it in our FPGA testbed.

Example correlation output for the eMTC network synchronization (PSS).

Status: Completed

Spring Semester 2018 (sem18f3)
Student: Sascha Giger
Supervision: Stefan Lippuner, Mauro Salomon


20% Theory, Algorithms and Simulation
50% Implementation (HLS/VHDL)
30% ASIC Implementation / FPGA Integration


Qiuting Huang

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