摘要
在移动通信技术迅速发展的今天,差错控制技术在保证通信可靠性方面起到越来越重要的作用,因此本文研究了多输入多输出系统中基于天线选择技术的混合自动请求重传技术。发送端的数据经过CRC校验,信道编码、调制,然后经过串/并变换之后发送出去,接收端接收到信息之后经过相反的处理,然后反馈相关的重传信息给发送端,重传时在发射天线集中选择最优的天线组合进行数据重传。本文提出了基于准信道信息的QR分解天线选择算法,研究结果表明,基于QR分解的天线选择算法与穷尽搜索的最优天线选择算法性能相当,但是运算量却少了很多,因此更加适合于运用到现代移动通信系统中。
Nowadays, Mobile Telecommunication develops very fast, Error Control Technology is very important in reliability. So we research Hybrid Automatic Repeat Request （HARQ） based on Antenna Selection in MIMO system. Data in Node B is dealt with CRC check, channel coding, modulation etc. Then it is sent to receiver. UE get data and deal with opposite operation, then send ACK/NACK to transmitter. Node B selects the best antenna combination in all antennas based on feedback of UE. We propose QR Antenna Selection based on precise channel information. The performance is as much as classic Antenna Selection, but its arithmetic is simpler. So it is more suitable for wideband mobile communication.
出处
《电子测试》
2009年第2期22-25,共4页
Electronic Test
