公开(公告)号：US20110182339A1

公开(公告)日：2011-07-28

申请号：US13004271

申请日：2011-01-11

申请人： In-Tae KANG ,  Jung-Hwa BAE ,  Jung-Uk WOO ,  Shin-Ho KIM ,  Sang-Min BAE ,  Jong-Han LIM ,  Dong-Min KIM ,  Bo-Rham LEE

发明人： In-Tae KANG ,  Jung-Hwa BAE ,  Jung-Uk WOO ,  Shin-Ho KIM ,  Sang-Min BAE ,  Jong-Han LIM ,  Dong-Min KIM ,  Bo-Rham LEE

IPC分类号： H04B17/00

CPC分类号： H04L27/2624

摘要： A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) using peak windowing is provided. In the apparatus, an absolute value calculator calculates an absolute value of an input signal, a subtractor subtracts a predetermined clipping threshold level from the absolute value, a smoothing unit performs smoothing on the subtracted signal according to a predetermined smoothing scheme and outputs a first smoothed signal, an adder adds the first smoothed signal to the clipping threshold level, an inverse calculator outputs a second smoothed signal by multiplying the clipping threshold level by an inverse of the added signal, and a multiplier outputs a final PAPR-reduced signal by multiplying the input signal by the second smoothed signal. The method and apparatus address an overcompensation problem while processing signals having a large bandwidth and a high data rate without delay, thereby minimizing the clipping influences on Bit Error Rate (BER) and Adjacent Channel Leakage Ratio (ACLR) performances.

摘要翻译： 提供了一种使用峰值窗口降低峰均功率比（PAPR）的方法和装置。 在设备中，绝对值计算器计算输入信号的绝对值，减法器根据绝对值减去预定的限幅阈值电平，平滑单元根据预定的平滑方案对减法信号进行平滑处理，并输出第一个平滑 信号，加法器将第一平滑信号与削波阈值电平相加，逆计算器通过将削波阈值电平乘以相加信号的倒数来输出第二平滑信号，乘法器将最终的PAPR降低信号乘以 输入信号由第二平滑信号。 该方法和装置在不延迟地处理具有大带宽和高数据速率的信号的同时解决过度补偿问题，从而最小化对误码率（BER）和相邻信道泄漏比（ACLR）性能的削波影响。

公开(公告)号：US20100322065A1

公开(公告)日：2010-12-23

申请号：US12795991

申请日：2010-06-08

申请人： In-Tae KANG ,  Jung-Hwa BAE ,  Bo-Rham LEE ,  Sang-Min BAE ,  Jong-Han LIM

发明人： In-Tae KANG ,  Jung-Hwa BAE ,  Bo-Rham LEE ,  Sang-Min BAE ,  Jong-Han LIM

IPC分类号： H04J1/00

CPC分类号： H04L5/003 ,  H04L5/0007 ,  H04L27/2618

摘要： A method and apparatus for transmitting a signal in a Single Carrier-Frequency Division Multiplexing Access (SC-FDMA) communication system are provided. The method includes determining if a Bandwidth Expansion Factor (BEF) Q is an integer, the BEF being determined as N/M according to a number N of subcarriers of a system band and a number M of subcarriers of an allocated band, expanding an input signal to be transmitted Q times in a time domain when the Q is an integer, generating an SC-FDMA signal, and transmitting the SC-FDMA signal.

摘要翻译： 提供一种用于在单载波频分复用接入（SC-FDMA）通信系统中发送信号的方法和装置。 该方法包括：确定带宽扩展因子（BEF）Q是否为整数，根据系统频带的子载波的数目N和所分配频带的子载波数M来确定BEF为N / M，扩展输入 当Q为整数时，在时域中发送Q次的信号，产生SC-FDMA信号，并发送SC-FDMA信号。

公开(公告)号：US20090083514A1

公开(公告)日：2009-03-26

申请号：US12234788

申请日：2008-09-22

申请人： Bo-Rham LEE ,  Jong-Hun Rhee ,  Min-Goo Kim ,  In-Tae Kang ,  Jun-Kyu Kang

发明人： Bo-Rham LEE ,  Jong-Hun Rhee ,  Min-Goo Kim ,  In-Tae Kang ,  Jun-Kyu Kang

IPC分类号： G06F12/06

CPC分类号： H03M13/2957 ,  H03M13/2707 ,  H03M13/276 ,  H03M13/6505 ,  H03M13/6525 ,  H04L1/0066 ,  H04L1/0071

摘要： A method and apparatus for block interleaving that eliminates the step of intermediary buffering. The method includes: (a) calculating a memory address at which first output data, of which number is equal to the number of rows of a first encoder is stored, (b) storing the first output data at the calculated memory address of a circular buffer, (c) storing second output data at an address which is incremented by a specific constant value from the calculated memory address of the circular buffer, and (d) storing (n+1)th output data at an address which is incremented by n from the calculated memory address of the circular buffer.

摘要翻译： 一种用于块交织的方法和装置，其消除了中间缓冲的步骤。 该方法包括：（a）计算存储器地址，在该存储器地址处，存储第一个输出数据的数量等于第一个编码器的行数，（b）将第一个输出数据存储在计算的循环存储器地址 缓冲器，（c）将存储第二输出数据存储在从计算的循环缓冲器的存储器地址中增加特定常数值的地址处，以及（d）将第（n + 1）个输出数据存储在增加了 n从循环缓冲区的计算内存地址。