摘要
提出了空时分集的正交频分复用系统(STBC-OFDM)的模型,完成了计算机仿真。结果表明,采用QPSK调制方式,双天线发射,单天线接收STBC与OFDM调制相结合,可以在1MH z带宽下得到1.73M b it/s的码速率,在瑞利信道下,该系统相对于无编码的OFDM系统,在误码率为1-0 3时,可获得3dB的信噪比增益。
A STBC-OFDM model was proposed with support of computer simulations. The simulation results show that with QPSK, the combination of STBC and OFDM modulation provides the date-rate of 1.73Mbit/s under the bandwidth of 1MHz. Compared to the OFDM system, the proposed system may obtain up to 3dB SNR gain with BER of under Raleigh channel.
出处
《无线通信技术》
2006年第4期9-12,共4页
Wireless Communication Technology
