Executive Summary

The DAVINCI project aims at setting up foundations of pioneering Non-Binary Digital Wireless Transmission targeting the high spectral efficiency requirements of next generation wireless communications. Five major objectives are targeted, namely, (1) Development of new structures of non-binary LDPC codes; (2) Development of adapted link level procedures; (3) Design of adequate algorithm and architecture for low cost implementation; (4) Quantification of the performance benefits using IMT-Advanced compliant link and system level platforms; and finally 5) Real-time demonstration of DAVINCI codec on OFDM wireless platform.


The major achievements towards the above five main objectives can be summarized as follows:

  1. Development of new structures of non-binary LDPC codes outperforming the binary codes but also enjoying highly desirable features such as flexibility in trading-off the performance and complexity, rate-compatibility, reliability in fading scenarios, and compliance with hardware parallel implementation;

  2. Development of adapted link level procedures suited to OFDM wireless transmission including adaptive coding and modulation (ACM) schemes, ARQ/H-ARQ, turbo channel estimation, and multiple antenna (MIMO) techniques;

  3. Design of low complexity DAVINCI decoder, referred to as L-Bubble check algorithm, together with the proof and validation of DAVINCI codec implementation using adequate architectures on FPGA, ASIC (45 nm technology), and ASIP (65 nm technology).

  4. Quantification of the performance benefits of DAVINCI codec compared to reference IMT-Advanced binary FEC schemes showing a) up to 0.5 dB in the SISO context converting into up to 5% average sector throughput, and 1 to 2 dB in the MIMO context; b) higher gains for high order modulations, reflecting the potential of DAVINCI codes to achieve high spectral efficiencies; and c) better reliability to non-linear distortions compared to binary codes;

  5. Successful demonstration at the Future Networks and Mobile Summit’10 of the DAVINCI decoder mapped on FPGA integrated with a wireless platform and used in a near real-time wireless scenario, showing its potential for fully real-time high rate wireless applications.

Overall, the project successfully met all its 8 milestones as specified in the Annex I of the Grant Agreement, delivered more than 50 technical deliverables, filed 4 intellectual property rights applications, and published more than 40 articles in journals and international conferences. Plans for commercial exploitation and valorisation of the project outcomes have been also set.


In summary, the DAVINCI project succeeded in setting up the foundations of Non-binary digital wireless communications. It showed that non-binary technology has a great potential to complement or replace the binary technology in the long run to meet the high spectral efficiency requirements of next generation wireless multimedia communications. The DAVINCI project will certainly serve as a key reference for a continuous exploration of the potential benefits of non-binary technology for future wireless communications but also for other communication media. This is with the aim of an enhanced capacity and quality of future radio access networks, which will benefit the end users in terms of more affordable prices for higher quality services.

 

Final Publishable Summary Report is available for download.