摘要
通过对空时分组码(Space-Time Block Code,STBC)在低信噪比时的成对差错概率(Pairwise Error Probability,PEP)的分析,提出了一种针对全分集准正交空时分组码(Quasi-Orthogonal Space-Time Block Code,QOSTBC)低信噪比性能的改进方法。该方法是利用分组码的码字差别矩阵的最大特征值所对应的特征向量,来提高空时分组码的性能。本文用严格的数学推导证明了该方法,并通过了仿真验证。
Based on the analysis of the Pairwise Error Probability (PEP) in low Signal Noise Ratio (SNR) for Space-Time Block Codes (STBC), a method improving the performance of full diversity quasi-orthogonal STBC under the low SNR, by employing the maximum eigenvector of the codeword pair difference matrix, is proposed. The strict mathematical derivation is given. Finally, this method is validated by simulation.
出处
《信息与电子工程》
2007年第3期178-181,共4页
information and electronic engineering
基金
重庆市科委自然科学基金资助项目(CSTC
2006BB2132)