频率选择性信道下单载波空时分组编码传输系统中的信道估计技术

Channel estimation in single-carrier systems with space-time block coded transmission over frequency-selective fading channels

在频率选择性信道下给出了单载波频域均衡系统结合空时分组编码传输基于训练序列的最优信道估计算法。由于选取具有恒幅特性的Chu序列作为训练序列,因此这一算法能够实现信道估计的最小均方误差,并作了理论证明。最后,对本方案的性能进行了仿真比较,仿真的结果证实了本方案的优点。

A channel estimation scheme was presented in single-carrier frequency domain equalization systems with space-time block coded transmission over frequency-selective fading channels. We have verified that, armed with Chu sequences which have constant envelope both in time and frequency domain, the proposed method is able to achieve MMSE estimation performance. In the end, the performance of the proposed scheme is simulated and compared over Jakes channel model. The simulation results show the effectiveness of the proposed method.