Table 1

ML decoding complexity of $g$-group decodable STBCs.

Sphere decoder complexity | General STBC | $g$-group decodable STBC |

Worst case | $\mathcal{C}$ | $g\mid \mathcal{C}{\mid}^{\frac{1}{g}}$ |

Expected | Polynomial in $K$ | Polynomial in $\frac{K}{g}$ |

Apart from rate and ML decoding ...

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