Design Of Interleaver For OFDM System Based On FPGA

The difference between wireless communication and terrestrial wired communications is there is no physical connection between the channel in wireless communication and the signal can not be bound on a path. Therefore, more and more interference in the space, including:different channel generated between the inter symbol interference (ICI) caused by multipath channel; internal inter symbol interference (ISI); the physical space on the electromagnetic wave absorption effect caused by different frequency selective fading channel (FSF), and so on, these will seriously affect the communication efficiency. We need some methods to overcome above problems and make the wireless communication be high speed, convenient, inexpensive and reliable and can replace the wired communicationIn this paper, we introduce a design uses the FPGA digital baseband signal, with the thought of SDR, and use the interleaving and de-interleave technology, dispersed the focus error, error bitstream into broader bitstream, reduce and even part eliminate the influence of ICI, ISI and FSF on the quality of communication, the OFDM technology is more easy to communicate at a higher rate.