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MIMO-OFDMA技术是正交频分多址(OFDMA)技术与多输入多输出(MIMO)系统结合形成的,该技术是在OFDMA传输系统中采用阵列天线实现空间、时间分集,提高系统容量和覆盖范围。基于OFDMA的MIMO系统具有逼近极限的系统容量和良好的抗衰落特性,人们普遍认为MIMO-OFDMA技术将是4G移动通信网络采用的核心技术。今年8月底,三星电子在韩国济州岛成功举办了“2006三星4G论坛”。在这次会议上．三星电子首次在全球公开演示了4G技术。这其中包括在以60公里时速行驶的汽车内进行100Mbps的数据传输;多个用户同时以1Gbps的速度下载32个频道的HD广播,并且同时使用超高速互联网上传下载、可视电话、论坛直播等服务;采用三星在小区边缘1bps／Hz干扰消除技术
MIMO-OFDMA is a combination of Orthogonal Frequency Division Multiple Access (OFDMA) and MIMO (Multiple Input Multiple Output) systems. This technology uses array antennas in OFDMA transmission systems to achieve space and time diversity and improve system capacity and coverage range. OFDMA-based MIMO system with the approaching limit of the system capacity and good anti-fading characteristics, it is generally believed that MIMO-OFDMA technology will be 4G mobile communication network using the core technology. By the end of August this year, Samsung Electronics successfully held the “2006 Samsung 4G Forum” in Jeju, South Korea. At this meeting. For the first time, Samsung Electronics demonstrated 4G technology globally. This includes 100Mbps data transmission in a car traveling at 60km / h; multiple users simultaneously downloading 32 channels of HD broadcast at 1Gbps simultaneously and concurrently using ultra-fast Internet uploads and downloads, video telephony, live forums, etc. Service; using Samsung in the cell edge 1bps / Hz interference cancellation technology