A bandwidth efficient channel estimation algorithm for MIMO-SCFDE
A bandwidth efficient channel estimation algorithm for MIMO-SCFDE
复制标题
DOI：
10.1109/vetecf.2003.1285200
复制
发表时间：
2003-10
期刊：
影响因子：
--
通讯作者：
J. Siew;J. Coon;R. Piechocki;A. Nix;M. Beach;S. Armour;Joe McGeehan
中科院分区：
文献类型：
--
作者：
J. Siew;J. Coon;R. Piechocki;A. Nix;M. Beach;S. Armour;Joe McGeehan
提出了一种基于频域均衡/检测的单载波MIMO系统信道估计新方法。为此，我们构建了新颖的短MIMO训练序列，该序列在时域具有恒定的包络，以避免在许多利用频域进行数据恢复的系统中遇到的峰均功率问题。同时，频谱在频域是平坦的，除了一个网格的零预定义的频率音调。这样的结构允许我们对空音调进行插值，以恢复完整的MIMO信道状态信息（CSI）。通过一系列FFT和IFFT操作迭代重建完整的CSI来执行插值。该算法具有极高的带宽效率，因为获得完整CSI所需的总训练开销仅为一个块周期。
This paper proposes a novel method for channel estimation in a single-carrier MIMO system with frequency-domain equalization/detection. To this end, we construct novel short MIMO training sequences that have a constant envelope in the time domain to preclude the peak-to-mean power problem encountered in many systems that utilize the frequency domain for data recovery. Simultaneously, the spectrum in the frequency domain is flat except for a grid of nulls for predefined frequency tones. Such construction allows us to interpolate over nulled tones to recover the full set of MIMO channel state information (CSI). The interpolation is performed by a specially crafted algorithm which iteratively reconstructs the full CSI by a series of FFT and IFFT operations. This algorithm is extremely bandwidth efficient in that the total training overhead required to obtain full CSI is just one block period.