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1. 发明申请

US20040247041A1 Digital time alignment in a polar modulator 有权
标题翻译：极坐标调制器中的数字时间校准
公开(公告)号：US20040247041A1
公开(公告)日：2004-12-09
申请号：US10454906
申请日：2003-06-04
申请人： Tropian, Inc., a California Corporation
发明人： Thomas E. Biedka , Wayne S. Lee , Gary L. Do
IPC分类号： H04L027/04 , H04L027/12 , H04L027/20 , H03C003/00 , H03K007/06
CPC分类号： H04L27/361 , H03C5/00
摘要： Methods of and apparatus for digitally controlling, with sub-sample resolution, the relative timing of the magnitude and phase paths in a polar modulator. The timing resolution is limited by the dynamic range of the system as opposed to the sample rate. The methods and apparatus of the invention use a digital filter to approximate a sub-sample time delay. Various techniques for approximating a sub-sample time delay using digital signal processing may be used to achieve the approximation. Ideally, the filter will have an all-pass magnitude response and a linear phase response. In practice, the magnitude may be low-pass and the phase may not be perfectly linear. Such deviation from the ideal response will introduce some distortion. However, this distortion may be acceptably small depending on the particular signal being processed.
摘要翻译：利用子样本分辨率数字控制的方法和装置，极坐标调制器中的幅度和相位路径的相对定时。定时分辨率受系统动态范围的限制，而不是采样率。本发明的方法和装置使用数字滤波器近似子采样时间延迟。可以使用用于使用数字信号处理近似子采样时间延迟的各种技术来实现近似。理想情况下，滤波器将具有全通幅度响应和线性相位响应。实际上，幅度可能是低通，相位可能不是完全线性的。这种偏离理想的反应会引入一些失真。然而，根据正在处理的特定信号，该失真可能是可接受的。

2. 发明申请

US20040196925A1 Systems and methods of using IQ modulation for calibration or measurement 失效
标题翻译：使用IQ调制进行校准或测量的系统和方法
公开(公告)号：US20040196925A1
公开(公告)日：2004-10-07
申请号：US10405555
申请日：2003-04-02
发明人： George S. Moore , Raymond A. Birgenheier
IPC分类号： H04L027/20 , H04L027/22
CPC分类号： H04L27/364
摘要： A system analyzer may generate an estimated frequency response of a device, system, communication medium, or combination thereof by utilizing a stimulus signal that is robust against IQ modulator impairments. A stimulus generator may be used to generate a plurality of discrete tones according to a frequency spacing and a frequency offset. The frequency spacing and the frequency offset cause spectrally inverted spurs (generated by impairments of the IQ modulator) to occur at frequencies other than frequencies of said modulated signal that are associated with said plurality of discrete tones. Additionally, by implementing a Discrete Fourier Transform (DFT) to possess a frequency resolution equal to the frequency offset, there is no leakage of power associated with the spectrally inverted spurs into frequency bins of the DFT associated with the desired frequency components. Likewise, leakage between the desired frequency components and leakage associated with the local oscillator may be avoided.
摘要翻译：系统分析器可以通过利用针对IQ调制器损伤的鲁棒的刺激信号来生成设备，系统，通信介质或其组合的估计的频率响应。刺激发生器可以用于根据频率间隔和频率偏移产生多个离散音调。频率间隔和频率偏移导致频谱反转的杂散（由IQ调制器的损伤产生）发生在与所述多个离散音调相关联的所述调制信号的频率以外的频率处。另外，通过实现具有等于频率偏移的频率分辨率的离散傅里叶变换（DFT），不存在与频谱反转的杂散相关联的功率泄漏到与期望的频率分量相关联的DFT的频率仓中。同样，可以避免所需频率分量之间的泄漏和与本地振荡器相关的泄漏。

3. 发明申请

US20040161054A1 Apparatus and method for digital wireless communications 有权
标题翻译：数字无线通信的装置和方法
公开(公告)号：US20040161054A1
公开(公告)日：2004-08-19
申请号：US10781839
申请日：2004-02-20
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Yutaka Murakami , Shinichiro Takabayashi , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L005/12 , H04L023/02 , H04L027/36 , H04L027/20
CPC分类号： H04L7/04 , H04L7/06 , H04L27/0008 , H04L27/206 , H04L27/34 , H04L27/3405 , H04L27/3455 , H04L2027/0024 , H04L2027/0087 , H04L2027/0093
摘要： A digital wireless communication apparatus includes a first modulator that modulates a pilot symbol according to a first modulation scheme, and a second modulator that modulates specific symbols according to a second modulation scheme, the second modulation scheme being different than the first modulation scheme. A third modulator modulates symbols other than the pilot symbol and the specific symbols according to a third modulation scheme, the third modulation scheme being different than the first and second modulation schemes. A timing controller controls timing such that the specific symbols are inserted immediately before and after the pilot symbol. The signal points of the specific symbols are allocated on an imaginary line that connects the origin point and a signal point of the pilot symbol on a signal space diagram.
摘要翻译：数字无线通信装置包括根据第一调制方案调制导频符号的第一调制器和根据第二调制方案调制特定符号的第二调制器，所述第二调制方案不同于第一调制方案。第三调制器根据第三调制方案调制除导频符号和特定符号之外的符号，第三调制方案不同于第一和第二调制方案。定时控制器控制定时，使得在导频符号之前和之后立即插入特定符号。特定符号的信号点分配在连接信号空间图上的导频符号的原点和信号点的假想线上。

4. 发明申请

US20040086058A1 Transmitter adjustment based on transmission statistics 有权
标题翻译：基于传输统计的发射机调整
公开(公告)号：US20040086058A1
公开(公告)日：2004-05-06
申请号：US10464990
申请日：2003-06-19
申请人： Advanced Micro Devices, Inc.
发明人： Uwe Eckhardt , Matthias Lenk , Michael Grell
IPC分类号： H04L027/20
CPC分类号： H04L25/05 , H04W52/08
摘要： A WLAN (Wireless Local Area Network) transmitter or another data communications apparatus is provided that comprise a transmission section that is configured to generate signals to be transmitted, and a control section that is connected to the transmission section to control the transmission section dependent on at least two transmission parameters. The control section comprises a state transition controller that is configured to step through a plurality of predefined control states. The control section is configured to apply different transmission parameter modification mechanisms in different control states. The state transition controller is configured to determine the respective next control states based on transmission success and failure statistics.
摘要翻译：提供了一种WLAN（Wireless Local Area Network，无线局域网）发射机或另一数据通信装置，其包括被配置为产生要发射的信号的发射部分，以及连接到发射部分以控制发射部分的控制部分，至少两个传输参数。控制部分包括状态转移控制器，其被配置成跨越多个预定义的控制状态。控制部分被配置为在不同的控制状态下应用不同的传输参数修改机制。状态转移控制器被配置为基于传输成功和失败统计来确定相应的下一个控制状态。

5. 发明申请

US20040071227A1 Apparatus for generating quadrature phase signals and data recovery circuit using the same 有权
标题翻译：用于产生正交相位信号的装置和使用其的数据恢复电路
公开(公告)号：US20040071227A1
公开(公告)日：2004-04-15
申请号：US10647476
申请日：2003-08-26
发明人： Jiunn-Yih Lee
IPC分类号： H04L027/20 , H03D003/22
CPC分类号： H03L7/0814 , H04L7/0025 , H04L7/0337
摘要： An apparatus for generating quadrature phase signals in a half-rate data recovery circuit, which is adapted to generate a first and a second clock signals having the same frequency and being 90 degrees out of phase with each other. The apparatus for generating quadrature phase signals mainly comprises a base selector, a first phase interpolator and a second phase interpolator. The base selector generates, based on a region control signal, a pair of phase region boundaries for the first clock signal as well as a pair of phase region boundaries for the second clock signal by using a plurality of reference clock signals. The first and second phase interpolators perform, based on a position control signal, weighted average processes for the two pairs of phase region boundaries, respectively, to thereby obtain the first and the second clock signals.
摘要翻译：一种用于在半速率数据恢复电路中产生正交相位信号的装置，其适于产生具有相同频率并且彼此相差90度的第一和第二时钟信号。用于产生正交相位信号的装置主要包括基本选择器，第一相位内插器和第二相位内插器。基地选择器通过使用多个参考时钟信号，基于区域控制信号产生用于第一时钟信号的一对相位区域边界以及用于第二时钟信号的一对相位区域边界。第一和第二相位内插器基于位置控制信号分别执行两对相位边界的加权平均处理，从而获得第一和第二时钟信号。

6. 发明申请

US20030189988A1 FIR chip for use in a wireless subscriber unit 失效
标题翻译： FIR芯片用于无线用户单元
公开(公告)号：US20030189988A1
公开(公告)日：2003-10-09
申请号：US10412456
申请日：2003-04-11
发明人： David Norton Critchlow , Moshe Yehushua , Graham Martin Avis , Wade Lyle Heimbigner , Karle Joseph Johnson , George Alan Wiley
IPC分类号： H04L027/04 , H04L027/12 , H04L027/20
CPC分类号： H04L25/03343 , H03B28/00 , H03C3/00 , H03D3/007 , H04L27/00 , H04L27/2092 , H04L2025/03375 , H04L2025/03477
摘要： A subscriber unit has a processor. The processor provides an output phase signal corresponding to a selected output digital frequency. A tuning register buffers the phase signal. A lookup table has two sets of predefined stored values pertaining to the amplitude of a signal for a single quadrant. The predefined stored values comprise coarse angle approximations and fine angle approximations. A sine and cosine generator receives the phase signal and generates sine and cosine waveforms utilizing amplitude values obtained from the lookup table. The phase signal includes phase data and specifies the quadrant and the algebraic sign of the phase data. The sine and cosine generator accessing the lookup table differently depending upon the quadrant and sine of the phase data, such that the lookup table provides an amplitude value from the sets of predefined stored values based on the phase data. A modulator combines the sine and cosine waveforms to produce the selected output digital frequency and modulates digital frequency.
摘要翻译：用户单元具有处理器。处理器提供对应于所选输出数字频率的输出相位信号。调谐寄存器缓冲相位信号。查找表具有两组与单个象限的信号幅度有关的预定义存储值。预定义的存储值包括粗略角近似和细角近似。正弦和余弦发生器接收相位信号，并使用从查找表获得的振幅值产生正弦和余弦波形。相位信号包括相位数据，并指定相位数据的象限和代数符号。正弦和余弦发生器根据相位数据的象限和正弦来不同地访问查找表，使得查找表基于相位数据从预定义的存储值集合提供振幅值。调制器组合正弦和余弦波形以产生选定的输出数字频率并调制数字频率。

7. 发明申请

US20030179829A1 Method and apparatus using base band transformation to improve transmitter performance 有权
标题翻译：使用基带变换的方法和装置来改善发射机性能
公开(公告)号：US20030179829A1
公开(公告)日：2003-09-25
申请号：US10101903
申请日：2002-03-19
申请人： MOTOROLA, INC.
发明人： Danny Thomas Pinckley , Sean Michael McBeath
IPC分类号： H04L027/04 , H04L027/12 , H04L027/20
CPC分类号： H03F1/3252 , H03F1/3294 , H04B1/0483
摘要： An apparatus for processing base band signals and method thereof to provide low level signals for amplification that will improve performance of a multi-channel transmitter. The apparatus includes a first Transform Matrix (TM) coupled to one or more input signals for providing a plurality of output signals each comprising a combination of phase shifted versions of the input signals; a processing unit coupled to the output signals for modifying according to a predetermined algorithm each of the output signals to provide modified output signals; a second TM coupled to the modified output signals for decomposing the modified signals to provide output base band signals, each of the output base band signals corresponding to one of the input signals; and a compensation function arranged and inter-coupled to either the modified output signals or the output base band signals to compensate those signals so that the output base band signals are suitable for generating the low level signals that will improve the performance of the multi-channel transmitter. The transmitter further converts the output base band signals to radio frequency signals that are applied to a first analog FTM that provides amplifier input signals that are amplified by an amplifier and decomposed into transmit signals that correspond to the base band output signals, by a second analog FTM. A sampler couples either the amplifier input signal or output signal back to the compensation function as a feedback signal.
摘要翻译：一种用于处理基带信号的装置及其方法，以提供用于放大的低电平信号，其将改善多信道发射机的性能。该装置包括耦合到一个或多个输入信号的第一变换矩阵（TM），用于提供多个输出信号，每个输出信号包括输入信号的相移版本的组合; 耦合到所述输出信号的处理单元，用于根据预定算法修改每个所述输出信号以提供修改的输出信号; 耦合到修改的输出信号的第二TM，用于分解修改的信号以提供输出基带信号，每个输出基带信号对应于输入信号之一; 以及补偿功能，其布置和互连到修改的输出信号或输出基带信号以补偿那些信号，使得输出基带信号适合于产生将提高多信道性能的低电平信号发射机。发射机还将输出基带信号转换成射频信号，该射频信号被施加到第一模拟FTM，该第一模拟FTM提供由放大器放大并被分解成与基带输出信号相对应的发射信号的放大器输入信号，由第二模拟 FTM。采样器将放大器输入信号或输出信号反馈到补偿功能作为反馈信号。

8. 发明申请

US20030147475A1 Wireless communication apparatus 失效
标题翻译：无线通信装置
公开(公告)号：US20030147475A1
公开(公告)日：2003-08-07
申请号：US10275112
申请日：2002-11-01
发明人： Akihiro Sasabata
IPC分类号： H04L027/20
CPC分类号： H04L27/0008
摘要： In a wireless communication apparatus which has the functions of both ASK modulation and QPSK modulation, which can be manufactured at a low cost, and which is small in size, an output terminal (5D) of a QPSK modulator (5) is connected to a carrier wave input terminal (1A) of an ASK modulator (1) via a switch (15). Also, an antenna (4) is connected to an output terminal (1C) of the ASK modulator (1) via a switch (16). Furthermore, a mixer (13) is provided between the switches (15) and (16). The switch (15) connects the QPSK modulator (5) and the ASK modulator (1) at the time of a transmission, whereas it connects the QPSK modulator (5) and the mixer (13) at the time of a reception. The switch (16) connects the ASK modulator (1) and the antenna (4) at the time of a transmission, whereas it connects the antenna (4) and the mixer (13) at the time of a reception. Thus, at the time of a transmission, an ASK-modulated wave or a QPSK-modulated wave is output using the ASK modulator (1) and the QPSK modulator (5). At the time of a reception, a sine wave is output by the QPSK modulator (5) and a data signal is down-converted, detected, or demodulated by the mixer (13).
摘要翻译：在具有ASK调制和QPSK调制功能的无线通信装置中，QPSK调制器（5）的输出端（5D）可以以低成本制造，尺寸小的无线通信装置连接到经由开关（15）的ASK调制器（1）的载波输入端（1A）。此外，天线（4）经由开关（16）连接到ASK调制器（1）的输出端子（1C）。此外，在开关（15）和（16）之间设置混合器（13）。开关（15）在发送时连接QPSK调制器（5）和ASK调制器（1），而在接收时连接QPSK调制器（5）和混频器（13）。开关（16）在发送时连接ASK调制器（1）和天线（4），而在接收时连接天线（4）和混频器（13）。因此，在发送时，使用ASK调制器（1）和QPSK调制器（5）输出ASK调制波或QPSK调制波。在接收时，由QPSK调制器（5）输出正弦波，并且由混频器（13）对数据信号进行下变频，检波或解调。

9. 发明申请

US20030147474A1 Method and apparatus for determining modulation scheme for retransmission in a communication system 有权
标题翻译：用于确定通信系统中重传的调制方案的方法和装置
公开(公告)号：US20030147474A1
公开(公告)日：2003-08-07
申请号：US10300476
申请日：2002-11-20
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Sang-Hyuck Ha , Min-Goo Kim
IPC分类号： H04L027/12 , H04L027/20 , H04L027/04
CPC分类号： H04L1/1867 , H04L1/0003
摘要： A method and apparatus for determining an optimum modulation scheme for a retransmission in a communication system supporting HARQ. When two modulation schemes are available, at an initial transmission, information is modulated in the lower-order modulation scheme if a first MPR is less than a first threshold, and in the higher-ordeulation scheme if the first MPR is greater than or equal to the first threshold. Here, an MPR is determined by an EP size, the number of available Walsh codes, and the number of slots per sub-packet that are used for a transmission. To select one of the modulation schemes for a retransmission, a second MPR is calculated using an EP size, the number of available Walsh codes, and the number of slots per sub-packet that are used for the retransmission. If the first MPR is equal to or less than a second threshold greater than the first threshold, the lower-order modulation scheme is selected. If the second MPR is greater than the second threshold, the higher-order modulation scheme is selected.
摘要翻译：一种在支持HARQ的通信系统中确定用于重传的最佳调制方案的方法和装置。当两个调制方案可用时，在初始传输时，如果第一MPR小于第一阈值，则在低阶调制方案中调制信息，并且如果第一MPR大于或等于第一个门槛。这里，MPR由EP大小，可用沃尔什码的数量和用于传输的每个子分组的时隙数确定。为了选择用于重传的调制方案之一，使用EP大小，可用沃尔什码的数量和用于重传的每个子分组的时隙数来计算第二MPR。如果第一MPR等于或小于大于第一阈值的第二阈值，则选择低阶调制方案。如果第二MPR大于第二阈值，则选择较高阶调制方案。

10. 发明申请

US20030103574A1 Data transmission system and data transmitter/receiver for use therein, and method thereof 有权
标题翻译：用于其中的数据传输系统和数据发射机/接收机及其方法
公开(公告)号：US20030103574A1
公开(公告)日：2003-06-05
申请号：US10308053
申请日：2002-12-03
申请人： NEC CORPORATION
发明人： Hiroshi Yamaguchi
IPC分类号： H04L027/00 , H04L027/12 , H04L027/20 , H04L027/06
CPC分类号： H04L25/49 , H04L7/0338
摘要： A signal CLK is input to delay this by one unit-time by a delay circuit 11, and to output it as a reference signal REF via a multiplexer 13. Also, the signal CLK is input into a multiplexer 14, and into a delay circuit 12, and the signal delayed by two unit-times is also input into the multiplexer 14. In the multiplexer 14, in the event that data DIN is null0null, the signal CLK is selected, and is output as transmission data DATA. On the other hand, when the data DIN is null1null, the signal CLK delayed by two unit-times by the delay circuit 12 is selected, and is output as the transmission data DATA. A phase comparator 21 detects a phase difference between the transmission data DATA and the reference signal REF, and in the event that the phase of the transmission data DATA is ahead of that of the reference signal REF, outputs a phase-lead detection signal R having a pulse width of the phase difference amount. Also, in the event that the phase of the transmission data DATA is behind of that of the reference signal REF, it outputs a phase lag detection signal S having a pulse width of the phase difference amount. An RS latch 22 takes DOUT as null1null when the phase lag detection signal S is applied to the set input, and takes DOUT as null0null when the phase lead detection signal R is applied to the reset input.
摘要翻译：输入信号CLK以通过延迟电路11将其延迟一个单位时间，并且经由多路复用器13将其作为参考信号REF输出。此外，信号CLK被输入到多路复用器14中并进入延迟电路并且延迟两个单位时间的信号也被输入到多路复用器14.在多路复用器14中，在数据DIN为“0”的情况下，选择信号CLK，并作为发送数据DATA输出。另一方面，当数据DIN为“1”时，选择由延迟电路12延迟两个单位时间的信号CLK，并作为发送数据DATA输出。相位比较器21检测发送数据DATA和参考信号REF之间的相位差，并且在发送数据DATA的相位超前于参考信号REF的相位的情况下，输出具有相位差量的脉冲宽度。此外，在发送数据DATA的相位落后于参考信号REF的相位的情况下，输出具有相位差量的脉冲宽度的相位滞后检测信号S. 当相位滞后检测信号S施加到设定输入时，RS锁存器22将DOUT设为“1”，当相位超前检测信号R施加到复位输入端时，DOUT为“0”。

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