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Novel Constructions of Improved Square Complex Orthogonal Designs for Eight Transmit Antennas

机译：八个发射天线的改进方形复正交设计的新颖构造

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摘要

Constructions of square, maximum rate complex orthogonal space-time block codes (CO STBCs) are well known, however codes constructed via the known methods include numerous zeros, which impede their practical implementation. By modifying the Williamson and Wallis-Whiteman arrays to apply to complex matrices, we propose two methods of construction of square, order-4n CO STBCs from square, order-n codes which satisfy certain properties. Applying the proposed methods, we construct square, maximum rate, order-8 CO STBCs with no zeros, such that the transmitted symbols are equally dispersed through transmit antennas. Those codes, referred to as the improved square CO STBCs, have the advantages that the power is equally transmitted via each transmit antenna during every symbol time slot and that a lower peak-to-average power ratio (PAPR) is required to achieve the same bit error rates as the conventional CO STBCs with zeros.
机译：正方形，最大速率复数正交空时分组码（CO STBC）的构造是众所周知的，但是通过已知方法构造的码包括许多零，这妨碍了它们的实际实现。通过修改Williamson和Wallis-Whiteman数组以应用于复杂矩阵，我们提出了两种由满足某些性质的正方形n阶代码构造正方形n阶4n CO STBC的方法。应用所提出的方法，我们构造不带零的正方形，最大速率，阶数为8的CO STBC，从而使发射符号通过发射天线平均分散。这些被称为改进的方形CO STBC的代码具有以下优点：在每个符号时隙期间均通过每个发射天线平均发射功率，并且需要较低的峰均功率比（PAPR）才能实现相同的目标误码率与传统的CO STBC一样为零。

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