【摘要】 未来的新一代移动通信系统4G需要提供极高的数据速率,在有限的频谱下提供尽可能高的传输速率,这就需要采用高频谱利用率技术。在理想情况下,多进多出(MI-MO)技术可以随着天线数目的增大而线性增大信道容量,具有极高的频谱利用率,是未来移动通信系统中最富有竞争力的技术之一。详细介绍MIMO技术中的空间复用和分集,并给出了MIMO技术的研究方向。更多还原

【Abstract】 The next generation mobile communication 4G called will support very high data transmission rate. It’s necessary to introduce technology with high frequency utilization in limited frequency spectrum. MIMO is a technique to increase channel capacity with adding more antennas and has very high spectrum utilization it is one of the most competitive technologies in future mobile communications. The thesis discussed the key techniques of MIMO and described its developing trend in future.更多还原