适于高速无线通信系统的空时分组码组合QAM调制方案

空时分组码 (STBC)利用多输入 多输出 (MIMO)无线通信系统的本质特性 ,通过提供发射天线分集和接收端的信号处理 ,从本质上提高了无线通信系统的容量 ,并以其编译码算法简单的特点获得了广泛关注和应用。在介绍了空时码和多输入 多输出无线通信系统的系统模型后 ,以基本的两天线空时分组码C2 为例给出了其编码和解码算法 ,并基于此提出了适于高速无线通信系统的空时分组编码结合正交调制 (QAM)的通信方案。最后给出了该方案在 16 QAM调制条件下几种典型空时分组码的误符率和误码率的性能仿真结果。结果表明 ,该方案是一种适于高速无线通信系统的优选方案

A Novel Scheme of STBC Combined with QAM for High-Data-Rate Wireless Communications

The space-time block coding (STBC), as an important member of the space-time coding family, has recently been developed to take advantage of the substantial capacity increases which are available in MIMO wireless communication systems by means of transmit diversity and proper signal processing at receiver and has been attracting more and more attention. After the introduction of space-time coding followed by the system model, the encoding and decoding algorithms for STBC are illustrated by the C-2. Then a novel scheme of STBC combined with QAM for high-data-rate wireless communications is put forward. Finally, simulation results of various STBC under 16-QAM constellation modulation are figured out and the validity of the scheme is proved.