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Some Designs of Full Rate Space–Time Codes With Nonvanishing Determinant

机译:行列式为零的全速率时空码的一些设计

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In this correspondence, we first present a transformation technique to improve the normalized diversity product for a full rate algebraic space–time block code (STBC) by balancing the signal mean powers at different transmit antennas. After rewriting a cyclic division algebra structure into a multilayer structure for a full rate code, we show that the normalized diversity product of the transformed code with the multilayer structure is better than the one of the transformed code with the cyclic division algebra structure. We then present a new full rate algebraic STBC with multilayer structure with nonvanishing determinant (NVD) for three transmit antennas when signal constellation is carved from QAM. We show that the new code has larger normalized diversity product than the existing $3,times,3$ NVD full rate STBC for quadrature amplitude modulation (QAM) signals, and we also show that it has the largest normalized diversity product in a family of full rate STBC.
机译:在这种对应关系中,我们首先提出一种变换技术,通过平衡不同发射天线的信号平均功率来提高全速率代数空时分组码(STBC)的归一化分集乘积。将循环分割代数结构重写为全速率码的多层结构后,我们证明具有多层结构的转换码的归一化分集乘积优于具有循环分割代数结构的转换码的归一化乘积。然后,当从QAM雕刻信号星座图时,我们针对三个发射天线提出了一种新的全速率代数STBC,该结构具有多层结构且无消失行列式(NVD)。我们证明,对于正交幅度调制(QAM)信号,新代码具有比现有的$ 3,3,3 $ NVD全速率STBC更大的归一化分集乘积,并且我们还表明,在完整的全频系列中,它具有最大的归一化乘积给STBC评分。

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