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1. 发明申请

WO2008021392A2 METHOD AND APPARATUS FOR REDUCING A PEAK-TO-AVERAGE POWER RATIO IN A MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM 审中-公开
标题翻译：用于减少多输入多输出系统中的峰值平均功率比的方法和装置
公开(公告)号：WO2008021392A2
公开(公告)日：2008-02-21
申请号：PCT/US2007/018060
申请日：2007-08-15
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , MYUNG, Hyung, G. , PAN, Kyle, Jung-Lin , OLESEN, Robert, L. , GRIECO, Donald, M.
发明人： MYUNG, Hyung, G. , PAN, Kyle, Jung-Lin , OLESEN, Robert, L. , GRIECO, Donald, M.
CPC分类号： H04L27/2614 , H04B7/0639 , H04B7/066 , H04L25/0204 , H04L27/2623 , H04L27/2624
摘要： A method and apparatus for reducing a peak-to-average power ratio (PAPR) in a multiple-input multiple-output (MIMO) wireless communication system are disclosed. Transmit beamforming or precoding is performed on transmit symbols based on a channel matrix. For feedback, channel matrices may be averaged over multiple subcarriers and the averaged channel matrices may be further quantized. In order to reduce the PAPR, amplitude clipping may be performed on the symbols after the transmit processing. The amplitude clipping may be performed by hard clipping, soft clipping, or smooth clipping.
摘要翻译：公开了一种减少多输入多输出（MIMO）无线通信系统中的峰均功率比（PAPR）的方法和装置。基于信道矩阵对发射符号执行发射波束形成或预编码。对于反馈，信道矩阵可以在多个子载波上进行平均，并且平均的信道矩阵可以被进一步量化。为了减少PAPR，可以对发送处理之后的符号执行幅度削波。幅度削波可以通过硬削波，软削波或平滑削波来执行。

2. 发明申请

WO2008091951A2 HYBRID SUBCARRIER MAPPING METHOD AND SYSTEM 审中-公开
标题翻译：混合子轨道映射方法和系统
公开(公告)号：WO2008091951A2
公开(公告)日：2008-07-31
申请号：PCT/US2008/051807
申请日：2008-01-23
申请人： POLYTECHNIC UNIVERSITY , MYUNG, Hyung, G.
发明人： MYUNG, Hyung, G.
IPC分类号： H04J13/02
CPC分类号： H04J11/00 , H04J2011/0003 , H04J2211/006 , H04L27/2636
摘要： A method and system of accommodating different mapping schemes in a transmission using an orthogonal direct sequence spread spectrum technique in which input data to a transmitter is spread by conversion into a sequence of complex numbers modulated for N -point discrete Fourier transform ( N -point DFT), subcarrier mapping, M -point inverse discrete Fourier transform ( M -point IDFT), and cyclic prefix (CP) insertion; the spread and modulated data is transmitted to and received by a receiver; and the received data is despread demodulated for cyclic prefix (CP) removal, M -point discrete Fourier transform ( M -point DFT), subcarrier demapping and equalization, and N -point inverse discrete Fourier transform ( N -point IDFT).
摘要翻译：一种使用正交直接序列扩频技术在传输中适应不同映射方案的方法和系统，其中通过将对发射机的输入数据转换为对于发射机调制的复数序列来扩展， N点离散傅里叶变换（N点DFT），副载波映射，M点离散傅立叶逆变换（M点离散傅里叶变换）点IDFT）和循环前缀（CP）插入; 扩展和调制数据被发送到接收器并由接收器接收; 并且接收到的数据被解扩展以进行循环前缀（CP）去除，M点离散傅立叶变换（M点DFT），副载波解映射和均衡，以及 N点离散傅里叶逆变换（N点IDFT）。

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