公开(公告)号：US20140314187A1

公开(公告)日：2014-10-23

申请号：US14312252

申请日：2014-06-23

Applicant: AT&T Intellectual Property II, L.P.

Inventor： LEONARD JOSEPH CIMINI, JR. ,  Nelson Ray Sollenberger

IPC: H04L27/26

CPC classification number: H04L27/2615 ,  H04B1/06 ,  H04L27/2601 ,  H04L27/2621 ,  H04L27/2626 ,  H04L27/2647

Abstract: An OFDM system embeds sequence information in the transmitted signal that reduces peak average power ratio (PAP) with minimal impact on the overall system efficiency. A marker is embedded onto the transmitted information that is used to identify the combining (inversion) sequence at the receiver. In one embodiment, selected tones in a cluster are rotated when the corresponding phase factor rotates the cluster.

Abstract translation: OFDM系统在传输信号中嵌入序列信息，降低峰值平均功率比（PAP），对整个系统的效率影响最小。 标记被嵌入到用于识别接收机上的组合（反转）序列的所发送的信息上。 在一个实施例中，当对应的相位因子旋转群集时，群集中的所选音调被旋转。

公开(公告)号：US20140192924A1

公开(公告)日：2014-07-10

申请号：US14203227

申请日：2014-03-10

Applicant: AT&T Intellectual Property II, L.P.

Inventor： LEONARD JOSEPH CIMINI, JR. ,  Nelson Ray Sollenberger

IPC: H04B1/04

CPC classification number: H04L27/2623 ,  H04B1/0475 ,  H04B7/2628 ,  H04B2201/70706 ,  H04L27/2614 ,  H04L27/2621

Abstract: The present invention provides a method and system for reducing the peak to average power ratio (PAP) of a signal with low computational complexity. According to one embodiment, the present invention is applied to reduce the PAP of an OFDM signal. According to an alternative embodiment, the present invention, is applied to reduce the PAP of a CDMA signal. Rather than seeking the optimum solution, which involves significant computational complexity, the present invention provides for a number of sub-optimal techniques for reducing the PAP of an OFDM signal but with much lower computational complexity.

Abstract translation: 本发明提供一种降低计算复杂度低的信号的峰均功率比（PAP）的方法和系统。 根据一个实施例，本发明应用于减少OFDM信号的PAP。 根据替代实施例，本发明被应用于减少CDMA信号的PAP。 本发明不是寻求涉及大量计算复杂度的最佳解决方案，而是提供了许多用于减少OFDM信号的PAP但具有低得多的计算复杂度的次优技术。