It is a true blind detection algorithm in that it needs no knowledge of channel fading information as well as time domain and frequency domain spread spectrum codes.

该算法无需时域扩频码、频域扩频码和信道衰落信息，是一种真正意义上的盲的检测算法。

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Due to the performance degradation of subspace-based blind decoding of space-time block codes (STBC) over spatially correlated channels, a revised decoding algorithm was proposed.

针对空时分组码子空间盲解码算法在空间相关信道下性能下降的问题，提出了一种修正解码算法。

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Blind multiuser detection technology can detect the exptected user with only needing the spreading codes and without train sequences and without information of users.

然而频繁的发送训练序列严重制约了多用户检测技术的实时性和实用性；

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