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1. 发明申请

US20040247039A1 Method of differential-phase/absolute-amplitude QAM 有权
标题翻译：差分相位/绝对幅度QAM方法
公开(公告)号：US20040247039A1
公开(公告)日：2004-12-09
申请号：US10454811
申请日：2003-06-04
发明人： Jeffrey William Dimsdle
IPC分类号： H04L023/02 , H04L005/12 , H04L027/36
CPC分类号： H04L27/3845 , H04L27/362 , H04L27/3809 , H04L27/3818
摘要： A method of quadrature amplitude modulation involving encoding phase differentially and amplitude absolutely, allowing for a high data rate and spectral efficiency in data transmission and other communication applications, and allowing for amplitude scaling to facilitate data recovery; amplitude scale tracking to track-out rapid and severe scale variations and facilitate successful demodulation and data retrieval; 2N power carrier recovery; incoherent demodulation where coherent carrier recovery is not possible or practical due to signal degradation; coherent demodulation; multipath equalization to equalize frequency dependent multipath; and demodulation filtering.
摘要翻译：一种正交幅度调制方法，包括绝对地对相位进行差分和幅度编码，允许数据传输和其他通信应用中的高数据速率和频谱效率，允许幅度缩放以便于数据恢复; 幅度跟踪以追踪快速和严重的尺度变化，并促进成功的解调和数据检索; 2 N电力载体恢复; 非相干解调，其中相干载波恢复由于信号劣化是不可能或实际的; 相干解调; 多径均衡以均衡频率依赖多路径; 和解调滤波。

2. 发明申请

US20040141564A1 Decoding of low-complexity signals transmitted by a constellation modulation 有权
标题翻译：通过星座调制传输的低复杂度信号的解码
公开(公告)号：US20040141564A1
公开(公告)日：2004-07-22
申请号：US10735251
申请日：2003-12-12
发明人： Helder Da-Silva-Valente , Frederic Lehmann
IPC分类号： H04L005/12 , H04L023/02
CPC分类号： H04L25/067 , H04L27/38
摘要： A method decodes a noisy signal from the coordinates of a point in a point constellation, each point associated with a digital data item of a determined number of bits, consisting of determining components of a received point; determining a reference point corresponding to the constellation point closest to the received point; determining at least one concurrent point corresponding to the constellation point closest to the reference point, having a bit of determined rank opposite to the bit of determined rank of the reference data; and determining, at least for the bit of the reference digital data at said determined rank, a precision data item based the received, reference, and concurrent points, in which the determination of the bits of the concurrent point is performed based on the values of some of the bits of the reference digital data and on said rank.
摘要翻译：一种方法从点星座中的点的坐标解码噪声信号，每个点与确定的位数的数字数据项相关联，包括确定接收点的分量; 确定对应于最接近接收点的星座点的参考点; 确定对应于最接近所述参考点的星座点的至少一个并发点，其具有与所述参考数据的确定秩的位相反的确定秩的比特; 以及至少针对所述确定的等级的所述参考数字数据的比特，基于所接收的，参考的和并发的点来确定精确数据项，其中根据参考数字数据的一些位和所述等级。

3. 发明申请

US20040120414A1 Method and apparatus for reducing peak to average power ratio in QAM multi-channel blocks 审中-公开
标题翻译：用于降低QAM多通道块中的峰均功率比的方法和装置
公开(公告)号：US20040120414A1
公开(公告)日：2004-06-24
申请号：US10671873
申请日：2003-09-29
发明人： Gerald Harron , Douglas Fast , Surinder Kumar
IPC分类号： H04L005/12 , H04L023/02
CPC分类号： H04L27/2621
摘要： The present inventions provide methods and systems for reducing the peak to average power ratio of a multi-channel block of QAM signals. Reducing the peak to average power ratio of a signal ensures that amplifiers and transmitters are not saturated, causing loss of data, and reducing spatter to adjacent channels. Further, reducing peak to average power ratios reduces the consumption of power during transmission. The reduction is obtained by providing a symbol delay on one or more of the QAM signals prior to the signals being summed where the delay is computed such that peak QAM power transitions in the QAM signals statistically do not align in time. The delay is arranged according to the equation: the additional delay for each QAM signal is equal to the symbol rate of the QAM signals divided by the number of QAM signals in summation.
摘要翻译：本发明提供了用于降低QAM信号的多通道块的峰均功率比的方法和系统。降低信号的峰均功率比确保放大器和发射器不饱和，导致数据丢失，并减少相邻信道的飞溅。此外，降低峰值与平均功率比降低了传输期间的功率消耗。通过在信号相加之前的一个或多个QAM信号上提供符号延迟，其中计算延迟，使得QAM信号中的峰值QAM功率跃迁在时间上不统一地获得。延迟根据以下等式布置：每个QAM信号的附加延迟等于QAM信号的符号率除以求和的QAM信号的数量。

4. 发明申请

US20040062318A1 Method and apparatus for receiving and deshuffling shuffled data in a high-rate packet data telecommunication system 有权
标题翻译：用于在高速率分组数据电信系统中接收和去混洗洗牌数据的方法和装置
公开(公告)号：US20040062318A1
公开(公告)日：2004-04-01
申请号：US10671553
申请日：2003-09-29
发明人： Nam-Yul Yu , Sang-Hyuck Ha , Min-Goo Kim
IPC分类号： H04L005/12 , H04L023/02
CPC分类号： H04L1/0071 , H04L1/0003 , H04L1/007 , H04L1/0083 , H04L27/18 , H04L27/34
摘要： A method and apparatus for deshuffling received shuffled data in a communication system supporting multi-level modulation. A transmitter encodes information bits and shuffles code symbols so that systematic symbols having a relatively high priority are disposed at high-transmission reliability positions and parity symbols having a relatively low priority are disposed at low-transmission reliability positions in a modulation symbol. A receiver demodulates received data and outputs a modulation symbol having a plurality of code symbols, stores the code symbols separately as systematic symbols and parity symbols in corresponding memory areas according to a deshuffling order corresponding to the shuffling, reads the stored code symbols, decodes the stored code symbols at a predetermined code rate, and thus outputs an packet.
摘要翻译：一种在支持多级调制的通信系统中对混洗数据进行混洗的方法和装置。发送器对信息比特进行编码并混合编码符号，使得具有较高优先级的系统符号被布置在高传输可靠性位置，并且具有较低优先级的奇偶校验符号被布置在调制符号中的低传输可靠性位置。接收机对接收到的数据进行解调并输出具有多个码符号的调制符号，根据与洗牌相对应的混洗顺序将代码符号作为系统符号和奇偶校验符号分别存储在相应的存储区域中，读取存储的码元，解码以预定的码率存储代码符号，从而输出分组。

5. 发明申请

US20040001555A1 Method and apparatus for producing and processing sequences of modulation symbols 有权
标题翻译：用于产生和处理调制符号序列的方法和装置
公开(公告)号：US20040001555A1
公开(公告)日：2004-01-01
申请号：US10180853
申请日：2002-06-26
发明人： Arnauld Taffin , Bastien Massie
IPC分类号： H04L005/12 , H04L023/02
CPC分类号： H04L1/0068 , H04L1/0071 , H04L1/0083 , H04L1/08 , H04L1/1812 , H04L27/3488
摘要： A sequence of modulation symbols defines at least two bit groups, including a first group of bits located in at least one first bit position within the symbols and a second group of bits located in at least one second bit position within the symbols and having a higher probability of transmission error than the bits of the first group. The coded information bits of a block are arranged to form a first sequence of bits in which each information bit is assigned to a respective one of the bit groups. The bits of the first sequence are then interleaved to form a second sequence of bits while preserving the assignment of the information bits to the bit groups. The bits of the second sequence are finally mapped onto the sequence of modulation symbols.
摘要翻译：调制符号序列定义至少两个比特组，包括位于符号内的至少一个第一比特位置中的第一比特组，以及位于符号内的至少一个第二比特位置中的第二比特组，并具有较高的传输错误的概率比第一组的位数。块的编码信息比特被布置成形成第一比特序列，其中每个信息比特分配给相应的一个比特组。然后将第一序列的比特交织以形成第二比特序列，同时保留对比特组的信息比特的分配。第二序列的比特最终映射到调制符号序列上。

6. 发明申请

US20030223507A1 Coded digital modulation method for communication system 有权
标题翻译：通信系统编码数字调制方法
公开(公告)号：US20030223507A1
公开(公告)日：2003-12-04
申请号：US10163167
申请日：2002-06-04
申请人： Agence Spatiale Europeenne
发明人： Riccardo De Gaudenzi , Alberto Guillen i Fabregas , Alfonso Martinez Vicente , Beatrice Ponticelli
IPC分类号： H04L027/10 , H04L027/18 , H04L023/02 , H04L005/12
CPC分类号： H04L27/3411
摘要： A new class of 16-ary Amplitude and Phase Shift Keying (APSK) coded modulations, called double-ring APSK modulation, based on an amplitude and phase shift keying constellation in which the locations of the digital signals to be encoded are placed on two concentric rings of equally spaced signal points. The APSK constellation parameters are optimised so as to pre-compensate the impact of non-linearities. The new modulation scheme is suited for being used with different coding schemes. It is shown that, for the same coding scheme, pre-distorted double-ring APSK modulation significantly outperforms classical 16-QAM and 16-PSK over a typical satellite channel, due to its intrinsic robustness against the high power amplifier non-linear characteristics. The proposed coded modulation scheme is shown to provide a considerable performance advantage for future satellite multi-media and broadcasting systems.
摘要翻译：基于振幅和相移键控星座的新一代16位幅度和相移键控（APSK）编码调制，称为双环APSK调制，其中要编码的数字信号的位置放置在两个同心等距信号点的环。对APSK星座参数进行优化，以预补偿非线性的影响。新的调制方案适合于使用不同的编码方案。显示出，对于相同的编码方案，由于其对高功率放大器非线性特性的固有鲁棒性，预失真双环APSK调制在典型的卫星信道上显着优于经典的16-QAM和16-PSK。所提出的编码调制方案被显示为将来的卫星多媒体和广播系统提供了相当大的性能优势。

7. 发明申请

US20030142755A1 Closed loop transmit diversity antenna verification using trellis decoding 失效
标题翻译：使用网格解码的闭环发射分集天线验证
公开(公告)号：US20030142755A1
公开(公告)日：2003-07-31
申请号：US10061877
申请日：2002-01-31
发明人： Richard Chi , Jittra Jootar , Parvathanathan Subrahmanya
IPC分类号： H04L005/12 , H04L023/02
CPC分类号： H04L1/0054 , H04B7/0634 , H04B7/0654 , H04L1/0055 , H04L1/06
摘要： Techniques for closed loop transmit diversity antenna verification are disclosed. In one aspect, a trellis decoder is used to determine the most likely transmitted phase in response to previously requested phase adjustments and observed transmitted symbols. In another aspect, maximum a posteriori (MAP) decoding is used. In yet another aspect, the identified likely transmitted phase is used for data demodulation. Various other aspects of the invention are also presented. These aspects have the benefit of decreasing the effect of phase discrepancies introduced by erroneous reception of phase adjustment information, resulting in improved error rates, and a corresponding increase in system capacity, data throughput, or both.
摘要翻译：公开了闭环发射分集天线验证技术。在一个方面，网格解码器用于响应于先前请求的相位调整和观察到的发射符号来确定最可能的发射相位。在另一方面，使用最大后验（MAP）解码。在另一方面，所识别的可能的传输阶段用于数据解调。还提出了本发明的各种其它方面。这些方面的优点在于减少由相位调整信息的错误接收引起的相位差异的影响，导致改善的错误率，以及相应的系统容量，数据吞吐量或两者的增加。

8. 发明申请

US20030138055A1 Decoder and decoding method 审中-公开
标题翻译：解码和解码方法
公开(公告)号：US20030138055A1
公开(公告)日：2003-07-24
申请号：US10257131
申请日：2002-10-09
发明人： Yoshiko Saito , Mitsuru Uesugi
IPC分类号： H04L005/12 , H04L023/02 , H04L027/06
CPC分类号： H04L27/22 , H04L25/03178 , H04L25/06 , H04L25/061
摘要： Converting section 201 converts I signal and Q signal in phase modulated signal of which delay wave distortion is cancelled into Inull signal and Qnull signal shown in Inull-Qnull plane, respectively. Positive/negative decision section 202 outputs decoded bit in Inull signal as bit 3Nnull1. Positive/negative decision section 205 outputs an inversely rotated value by decoded bit in Qnull signal as bit 3N. Subtractor 206 outputs a decoded bit obtained by carrying out subtraction using the absolute value of Inull signal and absolute value of Qnull signal as bit 3Nnull2. Thus, it is possible to carry out decoding of phase modulated signal while keeping apparatus size and calculation amount.
摘要翻译：转换部201将延迟波失真的相位调制信号中的I信号和Q信号分别转换成I'-Q'平面所示的I'信号和Q'信号。正/负决定单元202将I'信号中的解码比特输出为比特3N + 1。正/负判定部205通过Q'信号中的解码比特输出逆位旋转值作为位3N。减法器206输出通过使用I'信号的绝对值和Q'信号的绝对值作为位3N + 2执行减法而获得的解码比特。因此，可以在保持装置尺寸和计算量的同时执行相位调制信号的解码。

9. 发明申请

US20030123563A1 Method and apparatus for turbo encoding and decoding 审中-公开
标题翻译：用于turbo编码和解码的方法和装置
公开(公告)号：US20030123563A1
公开(公告)日：2003-07-03
申请号：US09903306
申请日：2001-07-11
发明人： Guangming Lu
IPC分类号： H03M013/03 , H04L005/12 , H04L023/02
CPC分类号： H03M13/3905 , H03M13/2957 , H03M13/3972 , H03M13/6511 , H03M13/6569
摘要： A digital processing apparatus and method for executing a turbo coding routine. The apparatus and method includes adapting a turbo coding algorithm for execution by one or more reconfigurable processing elements from an array of processing elements, and then mapping the adapted algorithm onto the array for execution. A method includes configuring a portion of an array of independently reconfigurable processing elements for performing a turbo coding routine, and executing the turbo coding routine on data blocks received at the configured portion of the array of processing elements. An apparatus includes an array of interconnected, reconfigurable processing elements, where each processing element is independently programmable with a context instruction. The apparatus further includes a context memory for storing and providing the context instruction to the processing elements, and a processor for controlling the loading of the context instruction to the processing elements, for configuring a portion the processing elements to perform the turbo coding routine.
摘要翻译：一种用于执行turbo编码例程的数字处理装置和方法。该装置和方法包括：通过一个或多个可重配置的处理元件从处理元件的阵列适配用于执行的turbo编码算法，然后将适应的算法映射到阵列上以供执行。一种方法包括配置用于执行turbo编码例程的独立可重构处理元件阵列的一部分，以及在处理元件阵列的配置部分接收的数据块上执行Turbo编码程序。一种装置包括互连的可重新配置的处理元件的阵列，其中每个处理元件可以用上下文指令独立地编程。所述设备还包括用于存储并向处理元件提供上下文指令的上下文存储器，以及用于控制上下文指令加载到处理元件的处理器，用于配置处理元件执行turbo编码例程的部分。

10. 发明申请

US20030118122A1 METHOD AND APPARATUS FOR CHANNEL CODING AND DECODING FOR MODULATION SCHEMES WITH MEMORY 审中-公开
标题翻译：用于具有存储器的调制方案的信道编码和解码的方法和装置
公开(公告)号：US20030118122A1
公开(公告)日：2003-06-26
申请号：US09372331
申请日：1999-08-11
发明人： NIKOLAI NEFEDOV
IPC分类号： H04L005/12 , H04L023/02
CPC分类号： H04L1/005 , H04L1/0041 , H04L1/0065
摘要： For transferring digital information in the form of consecutive symbols from a transmitter over a transmission channel susceptible for intersymbol interference to a receiver, the following steps are taken in succession: a) encoding the digital information to be transmitted with an outer code (202), b) interleaving the encoded digital information to be transmitted (203), c) encoding the interleaved encoded digital information with a recursive inner code (204) and in conjunction therewith modulating the encoded interleaved encoded digital information onto a carrier (205), d) transmitting the carrier containing the modulated encoded interleaved encoded digital information, e) receiving the transmitted carrier containing the modulated encoded interleaved encoded digital information, f) producing an estimate of the characteristics of the transmission channel (208), g) converting the received carrier into consecutive symbols in a SISO equalisation process using the produced estimate of the characteristics of the transmission channel (209), h) deinterleaving the consecutive symbols (210), and i) decoding the deinterleaved consecutive symbols in a SISO decoding process (211).
摘要翻译：为了通过容易对接收机进行符号间干扰的传输信道从发射机传送数字信息，接下来的步骤是：a）用外码（202）编码要发送的数字信息， b）对要传输的编码数字信息进行交织（203），c）用递归内码（204）对交错编码的数字信息进行编码，并结合编码的交错编码数字信息到载波（205）上，d）发送包含调制编码交错编码数字信息的载波，e）接收包含调制编码交织编码数字信息的传输载波，f）产生传输信道（208）的特性估计，g）将接收到的载波转换成在SISO均衡过程中使用c的产生估计的连续符号传输信道（209）的特征，h）对所述连续符号（210）进行解交织，以及i）在SISO解码过程（211）中解码所述解交织的连续符号。

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