Based on the existing incremental selection algorithm for Decode-and-Forward (DF) Multiple Input Multiple Output (MIMO) systems, a faster one which combines the incremental selection with the decremental exclussion is...Based on the existing incremental selection algorithm for Decode-and-Forward (DF) Multiple Input Multiple Output (MIMO) systems, a faster one which combines the incremental selection with the decremental exclussion is proposed. Firstly, the algorithm selects one antenna which makes the increment of the capacity greatest in every step. Then, excludes the antennas whose contribution to the capacity is less than μ% of that of the best antenna. Simulations show that the proposed algorithm achieves comparable performance to the existing one and has obviously decreased complexity under the appropriate threshold μ% .展开更多
本文针对S模式ADS-B(广播式自动相关监视)信号的信号格式与脉冲特征,给出了一种在低信噪比条件下的应答信号识别方法。利用DOB(盒差分,Difference of Boxes)脉冲检测与DF(Downlink Format,下行链路格式)字段匹配,能够准确检测应答信号...本文针对S模式ADS-B(广播式自动相关监视)信号的信号格式与脉冲特征,给出了一种在低信噪比条件下的应答信号识别方法。利用DOB(盒差分,Difference of Boxes)脉冲检测与DF(Downlink Format,下行链路格式)字段匹配,能够准确检测应答信号同步头的位置并实现DF认证。实测信号表明,该方法能够在低信噪比条件下检测到同步脉冲并进行DF检测,有效提升应答信号识别能力。展开更多
基金Supported by the National Natural Science Foundation of Jiangsu Province(No.08KJB510015)
文摘Based on the existing incremental selection algorithm for Decode-and-Forward (DF) Multiple Input Multiple Output (MIMO) systems, a faster one which combines the incremental selection with the decremental exclussion is proposed. Firstly, the algorithm selects one antenna which makes the increment of the capacity greatest in every step. Then, excludes the antennas whose contribution to the capacity is less than μ% of that of the best antenna. Simulations show that the proposed algorithm achieves comparable performance to the existing one and has obviously decreased complexity under the appropriate threshold μ% .
文摘本文针对S模式ADS-B(广播式自动相关监视)信号的信号格式与脉冲特征,给出了一种在低信噪比条件下的应答信号识别方法。利用DOB(盒差分,Difference of Boxes)脉冲检测与DF(Downlink Format,下行链路格式)字段匹配,能够准确检测应答信号同步头的位置并实现DF认证。实测信号表明,该方法能够在低信噪比条件下检测到同步脉冲并进行DF检测,有效提升应答信号识别能力。