Performance Of WF Precoding Combined With LDPC Coding

Abstract -The MIMO system multiple input multiple outputconstitutesa solution to increase the capacity andor to guarantee the quality of a wireless communication. There are many scheme MIMO making it possible to bring diversity of emission with an aim of making the transmissions robust in a difficult environment of propagation. There are two different approaches to bring this diversity open-loop system and closed-loop system. A WF precoder is a closed-loop system which increases the capacityof the MIMO channel.In addition the application of the error correcting codes improves the performances of the transmission. We propose in this article to combine the WFprecoder WF with a code LDPC. This new scheme makes it possible to have better a BERcapacity compromise.