公开(公告)号：US07804914B2

公开(公告)日：2010-09-28

申请号：US12076825

申请日：2008-03-24

Applicant: Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Tokuro Kubo

Inventor： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Tokuro Kubo

IPC: H04L27/00 ,  H04L25/49

CPC classification number: H04B1/707 ,  H04B2201/70706 ,  H04L5/0021 ,  H04L27/2624

Abstract: A radio transmission apparatus executing peak suppression processing to an input signal in at least two stages, includes a first peak detector detecting a first peak, a maximum peak among peaks exceeding a first threshold, for a plurality of envelopes included in a predetermined input signal section; a second peak detector detecting a second peak exceeding a second threshold, on the basis of each input signal envelope; a first peak suppression unit suppressing the predetermined input signal section to the limit of a first level based on the first peak; a modulation signal generation unit generating a modulated signal modulated from the input signal suppressed by the first peak suppression unit; and a second peak suppression unit suppressing the second peak to the limit of a second level by each modulated signal envelope based on the first level and the second peak.

Abstract translation: 对至少两级对输入信号执行峰值抑制处理的无线发送装置包括检测包括在预定输入信号部分中的多个信封的第一峰值，检测超过第一阈值的峰值中的最大峰值的第一峰值检测器 ; 基于每个输入信号包络检测第二峰值检测器，检测超过第二阈值的第二峰值; 第一峰值抑制单元，基于第一峰值将预定输入信号部分抑制到第一电平的极限; 调制信号生成单元，生成由所述第一峰值抑制单元抑制的输入信号调制的调制信号; 以及第二峰值抑制单元，其基于第一电平和第二峰值，通过每个调制信号包络将第二峰值抑制到第二电平的极限。

公开(公告)号：US20100215080A1

公开(公告)日：2010-08-26

申请号：US12677742

申请日：2008-09-12

Applicant: Yasuhiro Hamaguchi ,  Minoru Kubota ,  Hideo Namba ,  Shimpei Toh ,  Kazunari Yokomakura

Inventor： Yasuhiro Hamaguchi ,  Minoru Kubota ,  Hideo Namba ,  Shimpei Toh ,  Kazunari Yokomakura

IPC: H04B1/707

CPC classification number: H04B7/15 ,  H04B1/692 ,  H04B1/707 ,  H04B2201/70706 ,  H04J13/0044 ,  H04J13/20 ,  H04L5/0021 ,  H04L5/026 ,  H04L27/2615 ,  H04L27/2636 ,  H04L27/2647 ,  H04W72/0446

Abstract: A transmission apparatus according to the present invention includes: an encoding section; a modulation section; a variable-SF spreading section that performs spreading with variable SF according to control information A from a control section; an IDFT section that performs IDFT on output from the spreading section; a GI inserting section; a parallel/serial conversion section that converts output from the GI inserting section into a serial data sequence; a digital/analog conversion section; and an RF section that transmits a signal from an antenna after converting the signal to a frequency band for analog signal transmission and controlling it to an appropriate transmission power. The control section is configured to generate control information A for determining the variable SF and input the information A to the variable-SF spreading section and the RF section. In control information A, SF is varied depending on transmission power required.

Abstract translation: 根据本发明的发送装置包括：编码部分; 调制部; 可变SF扩展部，其根据来自控制部的控制信息A，利用变量SF进行扩展; IDFT部分，用于在扩展部分的输出上执行IDFT; GI插入部分; 并行/串行转换部分，其将来自GI插入部分的输出转换为串行数据序列; 数字/模拟转换部分; 以及RF部，其在将信号转换成用于模拟信号传输的频带之后从天线发送信号，并将其控制到适当的发送功率。 控制部分被配置为产生用于确定变量SF并且将信息A输入到可变SF扩展部分和RF部分的控制信息A. 在控制信息A中，SF取决于所需的发射功率而变化。

公开(公告)号：US20100148828A1

公开(公告)日：2010-06-17

申请号：US12577019

申请日：2009-10-09

Applicant: Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

Inventor： Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

IPC: H03B28/00 ,  G06G7/16

CPC classification number: H04L27/2614 ,  H04B2201/70706 ,  H04L27/0008 ,  H04L27/2623

Abstract: A technique wherein when signals, the modulation schemes of which are different, are to be combined, performing the peak suppression using amounts of the respective modulation schemes can effectively reduce the PAPR of a resulting combined signal. A peak suppressing method for use in a peak suppressing circuit, which combines input signals of different modulation schemes in a time domain to provide a combined signal, comprises detecting, as a peak, that portion of the combined signal which excesses a threshold value to generate a peak signal in accordance with the peak; converting the peak signal into a frequency domain signal and then dividing it into signals originating from the input signals to use these input-signal-originated signals as respective suppression signals; and adding, to the input signals, the suppression signals having different suppression amounts for the respective modulation schemes, thereby performing the peak suppression.

Abstract translation: 一种技术，其中当要组合其调制方案不同的信号时，使用各个调制方案的量执行峰值抑制可以有效地减少所得到的组合信号的PAPR。 在峰值抑制电路中使用的峰值抑制方法，其组合在时域中的不同调制方案的输入信号以提供组合信号，包括检测超过阈值以产生的组合信号的那部分作为峰值 根据峰值的峰值信号; 将峰值信号转换为频域信号，然后将其分为来自输入信号的信号，以将这些输入信号发起的信号用作相应的抑制信号; 并且向输入信号添加对于各个调制方案具有不同抑制量的抑制信号，由此执行峰值抑制。

公开(公告)号：US20100002670A1

公开(公告)日：2010-01-07

申请号：US12166883

申请日：2008-07-02

Applicant: PAUL DENT

Inventor： PAUL DENT

IPC: H04J13/04 ,  H04B1/707

CPC classification number: H04L27/3411 ,  H04B2201/70706 ,  H04J13/0077

Abstract: A transmitter and a method are described herein that generate a reduced peak-to-rms ratio multicode radio signal which helps to conserve battery life and increase the communication range and average data throughput rate.

Abstract translation: 这里描述了一种发射机和方法，其产生减小的峰均比MS多码无线电信号，其有助于节省电池寿命并增加通信范围和平均数据吞吐率。

公开(公告)号：US07639077B2

公开(公告)日：2009-12-29

申请号：US11662317

申请日：2005-09-08

Applicant: Nicholas Archer

Inventor： Nicholas Archer

IPC: H03F1/26

CPC classification number: H03F1/3241 ,  H03F3/24 ,  H03F2200/66 ,  H03G11/00 ,  H04B1/0475 ,  H04B2201/70706

Abstract: Iterative pre-conditioning of an electrical signal for supply to an amplifier, comprising: a first pre-conditioning iteration comprising limiting the amplitude of the electrical signal to produce a limited signal; generating a difference signal for subtracting the electrical signal from the limited signal; and generating an output signal by subtracting the difference signal from the limited signal; at least one further iteration comprising the steps of: Limiting the amplitude of the output signal of the previous iteration to produce a subsequent limited signal; generating a subsequent difference signal by subtracting the electrical signal from the subsequent limited signal; and generating an output signal by subtracting the subsequent difference signal from the subsequent limited signal.

Abstract translation: 用于提供给放大器的电信号的迭代预处理，包括：第一预调节迭代，包括限制电信号的幅度以产生有限信号; 产生用于从限制信号中减去电信号的差分信号; 以及通过从所述限制信号中减去所述差分信号来产生输出信号; 至少一个进一步的迭代包括以下步骤：限制先前迭代的输出信号的幅度以产生随后的有限信号; 通过从后续的限制信号中减去电信号来产生后续差分信号; 以及通过从随后的限制信号中减去后续差分信号来产生输出信号。

公开(公告)号：US07630454B2

公开(公告)日：2009-12-08

申请号：US11476694

申请日：2006-06-29

Applicant: Toshio Kawasaki

Inventor： Toshio Kawasaki

IPC: H04L27/00

CPC classification number: H04B1/692 ,  H04B1/7097 ,  H04B2201/70706

Abstract: In a frequency-division multiplexing transmission apparatus for transmitting data in a frequency spectrum specific to a mobile station, a chip-dividing unit divides each symbol of a transmission-symbol sequence into chips; a first phase rotation unit performs π/2 phase rotation for the odd-numbered chips of the divided chips; a chip-repetition and rearrangement unit compresses the time domains of each chip of the chip sequence after phase rotation, then repeats the chips a specified number of times and rearranges the chips of the obtained repetitive-chip sequences so that they have the same arrangement as the original chip sequence; a second phase rotation unit performs phase rotation that changes at a speed specific to a mobile station for each chip of the rearranged repetitive-chip sequence; and a transmission unit transmits said phase-rotated chips.

Abstract translation: 在用于以特定于移动台的频谱中发送数据的频分复用发送装置中，芯片分割单元将发送符号序列的每个符号划分成码片; 第一相位旋转单元对分割的芯片的奇数芯片执行π/ 2相位旋转; 芯片重复和重排单元在相位旋转之后压缩芯片序列的每个芯片的时域，然后将芯片重复指定次数，并重新排列所获得的重复码片序列的码片，使得它们具有与 原始芯片序列; 第二相位旋转单元执行以重排列重复码片序列的每个码片为特定于移动台的速度改变的相位旋转; 并且发送单元发送所述相位旋转的码片。

公开(公告)号：US07593705B2

公开(公告)日：2009-09-22

申请号：US11287787

申请日：2005-11-28

Applicant: Tadahiro Sato ,  Akifumi Adachi

Inventor： Tadahiro Sato ,  Akifumi Adachi

IPC: H04B1/06 ,  H04Q7/20

CPC classification number: H03G3/3052 ,  H03G3/005 ,  H03G3/3078 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H04B1/707 ,  H04B2201/70701 ,  H04B2201/70706

Abstract: A radio receiver includes a branching unit, a first gain-control system, a second-gain control system, and a signal processing unit. The branching unit branches a radio signal received by the radio receiver into two signals. The first-gain control system performs a gain control of a pilot signal in one of branched signals, and the second gain control system performs a gain control of a data signal in another of the branched signals. The signal processing unit synchronizes frames in the received radio signal. The signal processing unit outputs a gain signal to each of the first gain-control system and the second gain-control system. The first gain-control system and the second gain-control system perform the gain controls based on the gain signal.

Abstract translation: 无线电接收机包括分支单元，第一增益控制系统，第二增益控制系统和信号处理单元。 分支单元将由无线电接收机接收的无线电信号分成两个信号。 第一增益控制系统以分支信号之一对导频信号进行增益控制，第二增益控制系统对分支信号中的另一个进行数据信号的增益控制。 信号处理单元同步所接收的无线电信号中的帧。 信号处理单元向第一增益控制系统和第二增益控制系统中的每一个输出增益信号。 第一增益控制系统和第二增益控制系统基于增益信号执行增益控制。

公开(公告)号：US20090225898A1

公开(公告)日：2009-09-10

申请号：US11991555

申请日：2006-09-01

Applicant: Tatsuya Abe

Inventor： Tatsuya Abe

IPC: H04L25/49

CPC classification number: H04L25/03834 ,  H04B1/707 ,  H04B2201/70706 ,  H04L27/2623

Abstract: Provided is a transmitter 1 for processing signals to be transmitted. The transmitter 1 reduces the peak power generated in a transmission signal, effectively, even in case a plurality of peaks exist, for example, in the transmission signal at positions (or times) close to each other. In the transmitter 1, coefficient generating means 35-39 and D1-DM detect the peaks of the levels of the transmission target signals, and generate a peak suppression coefficient for suppressing those detected peaks altogether on the basis of the peaks. Transmission target signal level suppressing means 40, 33 and 34 suppress the levels of the transmission target signals with the peak suppression coefficient generated.

Abstract translation: 提供了一种用于处理要发送的信号的发送器1。 即使在存在多个峰值的情况下，例如在彼此靠近的位置（或时间）的发送信号中，发送器1也有效地降低了发送信号中产生的峰值功率。 在发射机1中，系数产生装置35-39和D1-DM检测发射目标信号的电平的峰值，并且基于峰值产生用于抑制所检测到的峰值的峰值抑制系数。 发送目标信号电平抑制单元40,33,34以产生的峰值抑制系数来抑制发送对象信号的电平。

公开(公告)号：US07577183B2

公开(公告)日：2009-08-18

申请号：US11189699

申请日：2005-07-27

Applicant: Masahiko Nakayama

Inventor： Masahiko Nakayama

IPC: H04B1/00

CPC classification number: H04J13/00 ,  H04B2201/70706

Abstract: There is a problem that a delay is caused in signal processing by exercising control so as to cause amplitude peaks in a transmission signal to fall in a prescribed range. A transmission apparatus for conducting wireless communication makes a decision whether a specific pattern which causes a peak exceeding a predetermined amplitude range to be generated in frequency characteristics of a transmission signal is included in a transmission code sequence for forming the transmission signal. And the transmission apparatus selects filter coefficients which prescribe a band limiting factor for the frequency characteristics of the transmission signal, on the basis of a result of the decision, and conducts filtering on the transmission code sequence by using the selected filter coefficients.

Abstract translation: 存在通过进行控制在信号处理中引起延迟以使发送信号中的振幅峰值落在规定范围内的问题。 用于进行无线通信的发送装置决定是否在发送信号的频率特性中产生超过预定幅度范围的峰值的特定模式被包括在用于形成发送信号的发送代码序列中。 并且发送装置根据判定结果，选择规定发送信号的频率特性的频带限制因子的滤波器系数，并使用所选择的滤波器系数对发送码序列进行滤波。

公开(公告)号：US07542736B2

公开(公告)日：2009-06-02

申请号：US11189210

申请日：2005-07-26

Applicant: Mohsen Sarraf

Inventor： Mohsen Sarraf

IPC: H04B1/04

CPC classification number: H04B1/707 ,  H04B2201/70706

Abstract: Techniques to reduce signal amplitude peak-to-average ratio (PAR) in a wireless communications system are described. The apparatus may include a signal conditioning module to receive a baseband signal. The signal conditioning module may split the baseband signal along multiple paths, delay one or more of the paths, and combine the multiple paths to form a conditioned signal having lower signal amplitude PAR than the baseband signal. Other embodiments are described and claimed.

Abstract translation: 描述了在无线通信系统中降低信号幅度峰均比（PAR）的技术。 该装置可以包括用于接收基带信号的信号调节模块。 信号调理模块可以沿着多个路径分割基带信号，延迟一个或多个路径，并且组合多个路径以形成具有比基带信号更低的信号幅度PAR的调节信号。 描述和要求保护其他实施例。