MIMO-OFDM移动通信系统的研究

he fourth generation mobile communication provides high speed of data transmission，OFDM technology as wireless environment of high-speed transmission technology, use several orthogonal sub-carriers to realize adjust transmission in given channels, spectrum overlapping, this not only reduced the mutual interference between sub-carriers, but also improve the spectrum utilization efficiency. MIMO technology as currently one of the most common wireless technologies, it can multiply improve communication system capacity and spectral efficiency without increasing the band- width. The combination of both has become the fourth generation mobile communication technology research`s hotspot. Through these two technologies complement each other, which can provide the system with high transfer rate , increase the system capacity, against frequency selective fading, reduce costs, etc.