FPGA Implementation of MIMO for Visible Light Communication.pdf

1、As theradiofrequency(RF)spectrum gets more and more congestedwith our constant use of Wi-Fi and 3G/4G，newer systems are being designed to alleviate if not replace some older ones. Visible Light Communication (VLC)，a syst

2、em in which information uses visible light as the media to transmit information has been showing promising results for indoor use. Combined with the technologies that are used in RF，it can provide high performance for re

3、latively low costs. Techniques such as the orthogonalfrequencydivisionmultiplexing modulation andmultipleinputmultiple output (MIMO) can be adapted to work with visible light，they might not necessarily work without adjus

4、tment as the characteristics of RF waves and visible light waves differ.As part of a project to implement a VLC system on aFPGAhardware platform，the MIMOaspect is studied from a VLC point of view，which differs slightly f

5、rom its RF counterpart.As the SNR is expected to be sufficiently high，azero-forcing decoder with ordered successive interference cancellation is implemented. To do so，the pseudoinverseof the channel matrix needs to be co

6、mputed. This is acomplex process and can be done via different methods. We opt for the method using the singular value decomposition of a matrix to determine its pseudoinverse.Since resources available on hardware aremor