这种估计方法不需要利用任何训练序列或导频信号，进一步提高了系统频带利用率，降低了计算复杂度。

This estimation algorithm doesn't need any training sequences or pilot signal, therefore improves band efficiency and lower computational complexity.

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盲信道估计算法因完全不需要发送导频或训练序列，提高了系统的频谱利用率，受到了研究人员越来越多的关注。

Because of never needing to send pilot tones or training symbols that can improve the spectrum using efficiency of the systems, blind channel estimation has gotten more and more research attention.

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