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1. 发明申请

WO2013049242A1 SYSTEMS AND METHODS FOR ASYNCHRONOUS RE-MODULATION WITH ADAPTIVE I/Q ADJUSTMENT 审中-公开
标题翻译：用于自适应I / Q调整的异步重新调制的系统和方法
公开(公告)号：WO2013049242A1
公开(公告)日：2013-04-04
申请号：PCT/US2012/057379
申请日：2012-09-26
申请人： AVIAT NETWORKS, INC. , VANN, Emerick , CHAO, Yen-Fang , QIN, Youming , MATIAN, Roland
发明人： VANN, Emerick , CHAO, Yen-Fang , QIN, Youming , MATIAN, Roland
IPC分类号： H03H7/30
CPC分类号： H04L1/206 , H03C3/406 , H03D3/009 , H03D7/168 , H04B1/0014 , H04B1/10 , H04B1/16 , H04B1/28 , H04B1/30 , H04L1/0036 , H04L1/203 , H04L1/208 , H04L27/38 , H04L27/3854
摘要： Various embodiments provide for systems and methods for signal conversion of one modulated signal to another modulated signal using demodulation and then re-modulation. According to some embodiments, a signal receiving system may comprise an I/Q demodulator that demodulates a first modulated signal to an in-phase ("I") signal and a quadrature ("Q") signal, an I/Q signal adjuster that adaptively adjusts the Q signal to increase the signal-to-noise ratio (SNR) of a transitory signal that is based on a second modulated signal, and an I/Q modulator that modulates the I signal and the adjusted Q signal to the second modulated signal. To increase the SNR, the Q signal may be adjusted based on a calculated error determined for the transitory signal during demodulation by a demodulator downstream from the I/Q modulator.
摘要翻译：各种实施例提供了用于使用解调然后再调制将一个调制信号信号转换成另一调制信号的系统和方法。根据一些实施例，信号接收系统可以包括将第一调制信号解调为同相（“I”）信号和正交（“Q”）信号的I / Q解调器，I / Q信号调节器，其自适应地调整Q信号以增加基于第二调制信号的瞬态信号的信噪比（SNR），以及将I信号和经调整的Q信号调制为第二调制信号的I / Q调制器信号。为了增加SNR，可以基于在由I / Q调制器下游的解调器解调期间为瞬态信号确定的计算误差来调整Q信号。

2. 发明申请

WO2006084244A3 ERASURE DETECTION FOR A TRANSPORT CHANNEL WITH AN UNKNOWN FORMAT 审中-公开
标题翻译：具有未知格式的运输通道的擦除检测
公开(公告)号：WO2006084244A3
公开(公告)日：2006-11-23
申请号：PCT/US2006004129
申请日：2006-01-31
申请人： QUALCOMM INC , VISVANATHAN ARUN , BUTALA AMIT , SUBRAHMANYA PARVATHANATHAN
发明人： VISVANATHAN ARUN , BUTALA AMIT , SUBRAHMANYA PARVATHANATHAN
IPC分类号： H04L1/00 , H04B7/005 , H04W52/12 , H04W52/18 , H04W52/20 , H04W52/24 , H04W52/44
CPC分类号： H04W52/12 , H04B1/7172 , H04L1/20 , H04L1/201 , H04L1/208 , H04W52/18 , H04W52/20 , H04W52/24 , H04W52/44
摘要： To perform erasure detection for an intermittently active transport channel with unknown format, a receiver determines an energy metric and a symbol error rate (SER) for a received block with CRC failure. The receiver computes uncorrelated random variables u and v for the received block based on the energy metric and SER, the estimated means and standard deviations of the energy metric and SER, and a correlation coefficient indicative of the correlation between the energy metric and SER. The receiver then evaluates the uncorrelated random variables u and v based on at least one decision criterion and declares the received block to be an erased block or a DTX block based on the result of the evaluation. The decision criterion may be defined based on a target probability of false alarm and adjusted based on another metric, such as a zero state bit, for the received block.
摘要翻译：为了对具有未知格式的间歇活动传输信道执行擦除检测，接收器确定CRC失败的接收块的能量度量和符号错误率（SER）。接收器基于能量度量和SER，能量度量和SER的估计均值和标准偏差以及指示能量度量和SER之间的相关性的相关系数来计算接收块的不相关随机变量u和v。接收器然后基于至少一个判定标准评估不相关的随机变量u和v，并且基于评估的结果将接收到的块声明为擦除块或DTX块。可以基于虚警的目标概率来定义判决标准，并且基于接收块的另一个度量（例如零状态比特）来调整判决标准。

3. 发明申请

WO2005062516A1 METHOD AND APPARATUS FOR ESTIMATING NOISE POWER PER SUBCARRIER IN A MULTICARRIER SYSTEM 审中-公开
标题翻译：用于在多媒体系统中估计噪声功率的方法和装置
公开(公告)号：WO2005062516A1
公开(公告)日：2005-07-07
申请号：PCT/US2004/039477
申请日：2004-11-24
申请人： INTEL CORPORATION , MALTXEV, Alexander , SADRI, Ali , DAVYDOV, Alexei
发明人： MALTXEV, Alexander , SADRI, Ali , DAVYDOV, Alexei
IPC分类号： H04L1/20
CPC分类号： H04L1/20 , H04L1/0001 , H04L1/0045 , H04L1/0071 , H04L1/208 , H04L27/2608 , H04L27/2647
摘要： Noise power is estimated for subcarriers in a multicarrier system by first decoding a received multicarrier signal and then using the decoded signal information and the received signal information to perform the estimation. Soft decision or hard decision decoding may be used. In at least one embodiment, channel estimates are also made using the decoded signal information and the received signal information.
摘要翻译：通过首先解码接收的多载波信号，然后使用解码信号信息和接收到的信号信息来执行估计，对多载波系统中的子载波估计噪声功率。可以使用软判决或硬判决解码。在至少一个实施例中，还使用解码信号信息和接收到的信号信息进行信道估计。

4. 发明申请

WO2004023676A1 SIGNAL, INTERFERENCE AND NOISE POWER MEASUREMENT 审中-公开
标题翻译：信号，干扰和噪声功率测量
公开(公告)号：WO2004023676A1
公开(公告)日：2004-03-18
申请号：PCT/US2003/026769
申请日：2003-08-26
申请人： HUGHES ELECTRONICS CORPORATION
发明人： CHEN, Ernest, C. , TRAN, Chinh
IPC分类号： H04B7/185
CPC分类号： H04B7/18515 , H04B7/1851 , H04B7/18526 , H04B17/318 , H04L1/20 , H04L1/206 , H04L1/208 , H04L27/183 , H04L27/227 , H04L27/366 , H04L2027/0061
摘要： Systems and methods are presented for measuring power levels of primary and interfering signals as well as noise, particularly for satellite transmitted signals. A typical method comprises the steps of receiving a signal comprising a primary signal, an interference signal and noise, demodulating the primary signal to remove a carrier frequency, decoding the primary signal to obtain symbols, estimating a power level of the primary signal based upon the demodulated and decoded primary signal. Additionally, an ideal primary signal can be generated from the carrier power and frequency and the symbols and subtracted from the received signal to produce the noise and interference signal. The noise and interference power is then estimated from the noise and interference signal.
摘要翻译：提出了系统和方法，用于测量主要和干扰信号的功率电平以及噪声，特别是卫星发射信号的噪声。典型的方法包括以下步骤：接收包括主信号，干扰信号和噪声的信号，解调主信号以去除载波频率，解码主信号以获得符号，基于该信号估计主信号的功率电平解调和解码的主信号。此外，理想的主信号可以从载波功率和频率以及符号产生，并从接收信号中减去产生噪声和干扰信号。然后从噪声和干扰信号估计噪声和干扰功率。

5. 发明申请

WO01017158A1 METHOD AND APPARATUS FOR DETECTING ZERO RATE FRAMES IN A COMMUNICATIONS SYSTEM 审中-公开
标题翻译：用于检测通信系统中的零速率帧的方法和装置
公开(公告)号：WO01017158A1
公开(公告)日：2001-03-08
申请号：PCT/US2000/023926
申请日：2000-08-31
IPC分类号： H03M13/45 , H04B7/005 , H04L1/00 , H04L1/20 , H04L27/30 , H04W52/26
CPC分类号： H04L1/208 , H03M13/3738 , H04B2201/70705 , H04L1/20 , H04W52/26
摘要： Techniques for detecting zero rate frames in a received data transmission. A modulated signal is received and demodulated in accordance with a particular demodulation format to generate demodulated symbols. The demodulated symbols are partitioned into a number of received frames. For each received frame, a quality metric is computed and compared against a threshold value. The threshold value is selected based, in part, on the quality metrics of received frames. Based on the comparison result, the received frame is indicated as being either transmitted and received in error (i.e., erased or bad) or not transmitted at all (i.e., zero rate or empty). The quality metric can relate to an energy of a received frame, a distance between a received frame and a codeword corresponding to the received frame, or other metrics. The threshold value can be selected based on the quality metrics computed for decoded frames or received frames identified as good, and can be dynamically adjusted based on current information available at the receiver. The method is advantageously used in a CDMA communications system (100).
摘要翻译：在接收数据传输中检测零速率帧的技术。根据特定解调格式接收和解调调制信号以产生解调符号。解调的符号被分割成多个接收的帧。对于每个接收的帧，计算质量度量并将其与阈值进行比较。部分地基于接收帧的质量度量来选择阈值。基于比较结果，接收到的帧被指示为发送和接收错误（即，擦除或不良）或完全没有发送（即，零率或空）。质量度量可以涉及接收帧的能量，接收到的帧与对应于接收到的帧的码字之间的距离或其他度量。可以基于为被识别为良好的解码帧或接收帧计算的质量度量来选择阈值，并且可以基于接收器处可用的当前信息来动态地调整阈值。该方法有利地用于CDMA通信系统（100）。

6. 发明申请

WO00033504A1 NOISE CHARACTERIZATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统中的噪声特征
公开(公告)号：WO00033504A1
公开(公告)日：2000-06-08
申请号：PCT/US1999/028625
申请日：1999-12-02
IPC分类号： H04B1/04 , H04B1/10 , H04B7/26 , H04L1/20
CPC分类号： H04L1/208 , H04L1/20
摘要： The character of the noise in a series of incoming symbols received over a wireless link is determined. A series of corresponding bits are recovered (72) based upon the series of incoming symbols. The series of corresponding bits are encoded (72) to determine a series of recovered symbols. A vector product of the series of incoming symbols and the series of recovered symbols is determined (74). A difference between two symbols within the vector product is determined (76), wherein the two symbols were transmitted over the wireless link in close temporal proximity to one another. The expected value of a non-orthogonal noise portion of the series of incoming symbols is determined (78) based upon an expected value of the difference between the two symbols.
摘要翻译：确定通过无线链路接收的一系列输入符号中的噪声的特性。基于一系列进入符号恢复一系列对应的比特（72）。对一系列对应的比特进行编码（72）以确定一系列恢复的符号。确定一系列输入符号和一系列恢复符号的矢量积（74）。确定矢量积中的两个符号之间的差异（76），其中两个符号在无线链路上彼此紧密地时间接近地发送。基于两个符号之间的差的期望值来确定（78）输入符号序列的非正交噪声部分的期望值。

7. 发明申请

WO99059269A1 METHOD AND SYSTEM FOR MULTIPLEXING OF MULTIPLE USERS FOR ENHANCED CAPACITY RADIOCOMMUNICATIONS 审中-公开
标题翻译：用于增强容量无线电通信的多用户的多路复用方法和系统
公开(公告)号：WO99059269A1
公开(公告)日：1999-11-18
申请号：PCT/SE1999/000798
申请日：1999-05-11
IPC分类号： H04B7/26 , H04L1/00 , H04L5/12 , H04L27/18 , H04B7/005
CPC分类号： H04L1/0071 , H04B7/2628 , H04B7/264 , H04L1/0045 , H04L1/007 , H04L1/208 , H04L5/12 , H04L27/18
摘要： A radiocommunication system supports multi-user multiplexing. Half-rate data communications with interleaving of data between two sources are described. This multiplexing technique provides, effectively, two sub-channels of information, which in turn provides an opportunity to improve decoding/demodulation of each sub-channel by re-encoding/remodulation information after successful decoding/demodulation of one sub-channel.
摘要翻译：无线电通信系统支持多用户复用。描述了两个源之间数据交错的半速率数据通信。这种复用技术有效地提供了两个信息子信道，这又提供了通过在一个子信道成功解码/解调之后重新编码/再调制信息来改善每个子信道的解码/解调的机会。

8. 发明申请

WO1994000915A1 BIT ERROR COUNTER AND ITS COUNTING METHOD, AND SIGNAL IDENTIFYING DEVICE AND ITS IDENTIFYING METHOD 审中-公开
标题翻译：位错误计数器及其计数方法和信号识别装置及其识别方法
公开(公告)号：WO1994000915A1
公开(公告)日：1994-01-06
申请号：PCT/JP1993000831
申请日：1993-06-21
申请人： OKI ELECTRIC INDUSTRY CO., LTD. , ABE, Masami
发明人： OKI ELECTRIC INDUSTRY CO., LTD.
IPC分类号： H03M13/12
CPC分类号： H04L1/208 , H03M13/00 , H03M13/23 , H03M13/3961 , H03M13/41 , H04L1/20
摘要： A device and method for counting bit errors in the received signal in digital communication, and a device and method for judging whether received signal is aural signal or control signal and for outputting identification signal, the number of errors, and decoded signal. Generally in bit error counters, there is a problem that an exact error rate cannot be calculated if an error that is incorrectable is included in a decoded signal. To overcome the problem, a status monitoring unit (22) is provided, which outputs a predetermined error rate utilizing information in the decoding process if an error is included in the decoded signal. Further, an error detection unit (28) is provided, which outputs a predetermined error rate if an error is included in the decoded signal. In identification devices, there is a problem that signal cannot be identified if an error that is undetectable is included, because the kind of the input signal is identified based on the result of error detection. To solve this problem, a signal identification unit (1206) is provided, which identifies the input signal based on the error detection result, the decoding result, and the number or errors.
摘要翻译：一种用于对数字通信中的接收信号中的比特错误进行计数的装置和方法，以及用于判断接收信号是听觉信号还是控制信号并用于输出识别信号，误差数目和解码信号的装置和方法。通常在位错误计数器中，存在如下问题：如果解码信号中包含不正确的错误，则不能计算精确的错误率。为了克服这个问题，提供了状态监视单元（22），如果在解码信号中包含错误，则利用解码处理中的信息输出预定的错误率。此外，提供错误检测单元（28），如果解码信号中包含错误，则输出预定的错误率。在识别装置中，由于根据错误检测结果来识别输入信号的种类，所以存在不能识别出不可检测的误差的信号的问题。为了解决这个问题，提供了一种信号识别单元（1206），其基于错误检测结果，解码结果以及数量或错误来识别输入信号。

9. 发明申请

WO1992009953A1 ERROR DETECTION SYSTEM 审中-公开
标题翻译：错误检测系统
公开(公告)号：WO1992009953A1
公开(公告)日：1992-06-11
申请号：PCT/US1991006230
申请日：1991-09-03
申请人： MOTOROLA, INC.
发明人： MOTOROLA, INC. , GOULD, Adam, F. , RASKY, Phillip, D.
IPC分类号： G06F11/10
CPC分类号： H04L1/0057 , H03M13/41 , H04L1/0054 , H04L1/0065 , H04L1/20 , H04L1/201 , H04L1/208
摘要： An error detection system (200; 508) for a discrete receiver (340). The error detection system (200; 508) indicates bad frames of binary information signals (206; 408) which contain distorted bits in densities so great as to cause a convolutional decoder (212; 412) to generate an incorrect, decoded signal. A signal (418) decoded by a convolutional decoder (212; 412) is re-encoded by an encoder (224; 424), and the re-encoded signal (230; 430) is compared (256; 456) with the signal (206-248; 408-448) received by the receiver (340). When portions of the re-encoded signal (230; 430) differ too greatly from the actual, received signal (206-248; 408-448), a bad frame indication (286; 486) is generated.

10. 发明申请

WO2014012391A1 一种语音数据丢包的补偿方法及装置审中-公开
公开(公告)号：WO2014012391A1
公开(公告)日：2014-01-23
申请号：PCT/CN2013/075057
申请日：2013-05-02
申请人：华为技术有限公司
发明人：刘金华
IPC分类号： H04L1/00
CPC分类号： H04L49/557 , G10L19/005 , H04L1/0061 , H04L1/208 , H04L65/1083
摘要：本发明实施例公开了一种语音数据丟包的补偿方法及装置，用于补偿丟失的语音数据包。本发明实施例方法包括：当侦测到丟失帧时，在接收到的语音数据中提取基音周期，计算接收到的最后一帧正常语音数据的后向相位，根据该后向相位计算所述丟失帧的前向相位，在所接收到的数据中，截取最后一帧相位与该前向相位相同的数据，作为补偿数据。

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