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11. 发明授权

US07376202B2 OFDM peak-to-average power ratio reduction by combined symbol rotation and inversion with limited complexity 有权
标题翻译：通过组合符号旋转和反演减少OFDM峰均功率比，复杂度有限
公开(公告)号：US07376202B2
公开(公告)日：2008-05-20
申请号：US10989895
申请日：2004-11-16
申请人： Yeheskel Bar-Ness , Mizhou Tan
发明人： Yeheskel Bar-Ness , Mizhou Tan
IPC分类号： H04K1/02
CPC分类号： H04L27/2617 , H04K1/00 , H04L27/2621
摘要： A signal scrambling method based on combined symbol rotation and inversion (CSRI) for the peak-to-average power ratio (PAPR) reduction of OFDM signals. By dividing OFDM sequences into subblocks and performing symbol rotation and inversion in each subblock, high degrees of freedom are available to offset the possibility of encounting poor sequences with large PAPR. In order to reduce the complexity of this scheme, two suboptimal CSRI schemes are disclosed, one based on a successive approach combined with symbol grouping, and the other based on a random approach combined with threshold control.
摘要翻译：基于组合符号旋转和反演（CSRI）的信号加扰方法，用于OFDM信号的峰均功率比（PAPR）降低。通过将OFDM序列划分为子块并在每个子块中执行符号旋转和反转，可以获得高自由度来抵消具有较大PAPR的差序列的可能性。为了降低该方案的复杂性，公开了两种次优的CSRI方案，一种是基于与符号分组相结合的连续方法，另一种基于与阈值控制相结合的随机方法。

12. 发明授权

US07339884B2 STBC MIMO-OFDM peak-to-average power ratio reduction by cross-antenna rotation and inversion 有权
标题翻译：通过横向天线旋转和反演降低STBC MIMO-OFDM峰值与平均功率比
公开(公告)号：US07339884B2
公开(公告)日：2008-03-04
申请号：US11013934
申请日：2004-12-16
申请人： Yeheskel Bar-Ness , Mizhou Tan , Zoran Latinovic
发明人： Yeheskel Bar-Ness , Mizhou Tan , Zoran Latinovic
IPC分类号： H04J11/00
CPC分类号： H04L25/03866 , H04L1/0625 , H04L27/2614 , H04L27/3411
摘要： A signal scrambling method is provided for peak-to-average power ratio (PAPR) reduction of STBC MIMO-OFDM signals in a MIMO-OFDM system having Y transmit antenna. In general terms the OFDM sequence of symbols in said signal for each transmit antenna is divided into M sub-blocks of equal size and subclockwise rotation and inversions are performed across all transmit antennas to generate [2Y]M permuted sequence sets from the original OFDM sequence. Based on a predetermined criteria, there is then selected from the resulting sets of OFDM sequences the one with the best PAPR properties for transmission. The predetermined criteria preferably comprises identifying maximums for all [2Y]M sequence sets, by calculating the largest PAPR value of Y sequences in each set and selecting a set with the minimum maximum for transmission.
摘要翻译：提供信号加扰方法，用于具有Y发送天线的MIMO-OFDM系统中的STBC MIMO-OFDM信号的峰均功率比（PAPR）降低。一般来说，用于每个发射天线的所述信号中的符号的OFDM序列被划分为相同大小的M个子块和亚时基旋转，并且在所有发射天线之间执行反转以产生[2Y] 来自原始OFDM序列的序列集。基于预定标准，从所得到的OFDM序列组中选择具有最佳PAPR属性的传输序列。预定标准优选地包括通过计算每组中的Y序列的最大PAPR值并选择具有最小传输最小值的集合来识别所有[2Y]个超级序列集的最大值。

13. 发明申请

US20060120268A1 STBC MIMO-OFDM peak-to-average power ratio reduction by cross-antenna rotation and inversion 有权
标题翻译：通过横向天线旋转和反演降低STBC MIMO-OFDM峰值与平均功率比
公开(公告)号：US20060120268A1
公开(公告)日：2006-06-08
申请号：US11013934
申请日：2004-12-16
申请人： Yeheskel Bar-Ness , Mizhou Tan , Zoran Latinovic
发明人： Yeheskel Bar-Ness , Mizhou Tan , Zoran Latinovic
IPC分类号： H04J11/00
CPC分类号： H04L25/03866 , H04L1/0625 , H04L27/2614 , H04L27/3411
摘要： A signal scrambling method is provided for peak-to-average power ratio (PAPR) reduction of STBC MIMO-OFDM signals in a MIMO-OFDM system having Y transmit antenna. In general terms the OFDM sequence of symbols in said signal for each transmit antenna is divided into M sub-blocks of equal size and subclockwise rotation and inversions are performed across all transmit antennas to generate [2Y]M permuted sequence sets from the original OFDM sequence. Based on a predetermined criteria, there is then selected from the resulting sets of OFDM sequences the one with the best PAPR properties for transmission. The predetermined criteria preferably comprises identifying maximums for all [2Y]M sequence sets, by calculating the largest PAPR value of Y sequences in each set and selecting a set with the minimum maximum for transmission.
摘要翻译：提供信号加扰方法，用于具有Y发送天线的MIMO-OFDM系统中的STBC MIMO-OFDM信号的峰均功率比（PAPR）降低。一般来说，用于每个发射天线的所述信号中的符号的OFDM序列被划分为相同大小的M个子块和亚时基旋转，并且在所有发射天线之间执行反转以产生[2Y] 来自原始OFDM序列的序列集。基于预定标准，从所得到的OFDM序列组中选择具有最佳PAPR属性的传输序列。预定标准优选地包括通过计算每组中的Y序列的最大PAPR值并选择具有最小传输最小值的集合来识别所有[2Y]个超级序列集的最大值。

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