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引用次数: 4

摘要

Hassibi, Hochwald, Shokrollahi和sweeldens(参见技术代表,贝尔实验室,朗讯技术,2000)分类了所有具有非零分集积的酉矩阵的有限群。然而,众所周知,具有消失分集积的空时差分码在一定条件下仍然具有较好的性能。我们展示了如何仅使用群的特征表来计算有限群作为时空星座的关键参数。对SL(2,17)组进行了模拟。
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Group characters and unitary space-time codes
Hassibi, Hochwald, Shokrollahi and Sweldens (see tech. rep., Bell Laboratories, Lucent Technologies, 2000) classified all finite groups of unitary matrices with nonzero diversity product. It is well-known, however, that differential space-time codes with vanishing diversity product still can perform reasonably well under certain conditions. We show how to compute parameters of finite groups crucial for their use as space-time constellations, using only the character table of the group. Simulations are given for the group SL(2,17).
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