未来地面数字TV在不等接收功率下的高效MIMO-OFDM方案
Efficient MIMO-OFDM Schemes for Future Terrestrial Digital TV with Unequal Received Powers
摘要：
本文研究了接收功率相等和不等对地面数字电视中不同MIMO-OFDM方案性能的影响。更准确地说，我们专注于三种类型的非正交计划：BLAST计划，线性色散（LD）码和黄金码，我们比较他们的性能的Alamandro计划。使用两个接收天线，我们表明，第二个天线上的中等衰减和高频谱效率，黄金码优于其他计划。然而，当频谱效率较低、接收功率相等或其中一个天线严重损坏时，Alamplitude方案的性能最好。当使用三个天线时，我们表明Golden码对接收侧的功率不平衡提供了最高的鲁棒性
英文摘要：
This article investigates the effect of equal and unequal received powers on the performances of different MIMO-OFDM schemes for terrestrial digital TV. More precisely, we focus on three types of non-orthogonal schemes: the BLAST scheme, the Linear Dispersion (LD) code and the Golden code, and we compare their performances to that of Alamouti scheme. Using two receiving antennas, we show that for moderate attenuation on the second antenna and high spectral efficiency, Golden code outperforms other schemes. However, Alamouti scheme presents the best performance for low spectral efficiency and equal received powers or when one antenna is dramatically damaged. When three antennas are used, we show that Golden code offers the highest robustness to power unbalance at the receiving side
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