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arXiv 0902.2948cs.ITmath.IT
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优化的L2-Orthogonal STC CPM,适用于3个NAS

Optimized L2-Orthogonal STC CPM for 3 Antennas

Matthias Hesse, Jerome Lebrun, Luc Deneire

摘要:

在本文中,我们进一步介绍了我们最近设计的家庭的L2正交空时码的CPM。由于它们既保持了CPM的恒定包络特性,又保持了空时码的分集特性和正交性,从而降低了译码复杂度,因此即使对于多于两个发射天线,这些码也是满速率的。这些代码的功率效率的问题首先处理证明,在这些系统中的带宽的固有增加是相当温和的。然后详细说明了码的初始状态如何影响编码增益,并且必须进行优化。对于两个和三个天线的情况下,我们通过计算机模拟确定的最佳值,并显示如何编码增益和误码性能显着提高了这种优化。

英文摘要:

In this paper, we introduce further our recently designed family of L2 orthogonal Space-Time codes for CPM. With their advantage of maintaining both the constant envelope properties of CPM, the diversity of Space-Time codes and moreover orthogonality, and thus reduced decoding complexity, these codes are also full rate, even for more than two transmitting antennas. The issue of power efficiency for these codes is first dealt with by proving that the inherent increase in bandwidth in these systems is quite moderate. It is then detailed how the initial state of the code influences the coding gain and has to be optimized. For the two and three antennas case, we determine the optimal values by computer simulations and show how the coding gain and therewith the bit error performance are significantly improved by this optimization.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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