摘要
介绍了空时编码(STBC)和空频编码(SFBC)应用于OFDM系统,实现发射分集,并对基于梳状导频的LS(最小二乘)算法采用正交导频设计方案,把多天线信道估计转化为单天线信道估计,大大简化了运算。仿真结果表明,实现的空时和空频编码OFDM方案不仅误码性能良好,且具有系统实现复杂度低、接收机结构简单等优点。
This paper introduces space-time coding and space-frequency coding are applied to OFDM system to achieve transmit diversity. An orthogonal pilot design scheme is adopted for the least square algorithm, the MIMO channel estimation is converted to SISO channel estimation. The simulation results show that this method has many advantages such as good error bit performance, low implementation complexity etc..
出处
《无线电通信技术》
2007年第6期27-29,共3页
Radio Communications Technology
关键词
OFDM
空时分组码
空频分组码
信道估计
OFDM
space-time block code
space-frequency block code
channel estimation
