FPGA implementation of MIMO-OFDM transceiver

摘要

Orthogonal Frequency Division Multiplexing (OFDM) which is a FDM modulation is a promising methodology for high data rate applications like video streaming. This methodology works effectively for multipath frequency selective channels. Multiple Input and Multiple Output (MIMO) is a wireless technology that uses multiple antennas at the transceiver ends. It increases link throughput and network capacity. The combination of both MIMO and OFDM provides a system that is robust against the frequency-selective fading caused by sever multi-path scattering and narrowband interference. This ongoing evaluation has accelerated the development of System-on-chip (SoC) platform to support the physical layer of these technologies. In this paper, Field Programmable Gate Array (FPGA) implementation of channel coder, its decoder, interleaver and deinterleaver of MIMO-OFDM are discussed. Convolutional encoder of code rate 1/2 is used because of its less complexity and Viterbi decoder is used for decoding. Interleaver and Deinterleaver is used to remove the burst error thus improving the performance.