News

GSoC 2018 MIMO - Week 06 - Expanding the V-BLAST scheme to MxM

June 22, 2018

I expanded the 2×2 V-BLAST zero-forcing scheme to a general MxM scheme. For a general MxM matrix, the inverse cannot be precalculated by hand as I did for the 1×1 and 2×2 scheme. The inversion of a possibly large channel matrix can quickly get a very complex problem which needs a lot of computation power, especially if it is recalculated frequently, for example each micro second when assuming a coherence time of 1μs and therefore a CSI update rate of 1MHz.

GSoC 2018 gr-modtool - Week 5 - Expose API and API tests

June 16, 2018

The API!

GSoC 2018 MIMO - Week 05 - About Inverses and Pseudo-Inverses

June 15, 2018

Last week, I implemented a V-BLAST encoder which demultiplexes a data stream into M parallel streams that are simultaneously sent through the same channel. This was a really simple task which granted us a data rate increase of factor M without the need of a complex transmitter complexity.

GSoC 2018 gr-modtool - Week 4 - Core-CLI split

June 9, 2018

The Core and the CLI splits!

GSoC 2018 MIMO - Week 04 - Spatial Multiplexing

June 8, 2018

At the first half of the week, I finished the doxygen documentation for the already implemented MIMO modules. I have now completed all milestones of the first coding period

GSoC 2018 gr-modtool - Week 3 - Enhancement, Documentation, Separation of Modules (started)

June 2, 2018

The first major pull request!

GSoC 2018 MIMO - Week 03 - Documentation

June 1, 2018

I think about the proposed MIMO feature not just as a functioning tool but as well as an instructive and attractive feature for GNU Radio beginners to understand MIMO. Therefore, I started to write a little in-tree top-level documentation which includes both, an introduction to the theoretical background of MIMO and a practical usage manual of all the GNU Radio blocks which are included in the section MIMO.