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111. 发明申请

WO01048910A3 TRANSMITTER FOR TRANSMITTING SIGNALS OVER RADIO CHANNELS AND METHOD FOR TRANSMITTING SIGNALS OVER RADIO CHANNELS 审中-公开
标题翻译：站发送无线电信道上和方法信号，发送信号通过无线信道
公开(公告)号：WO01048910A3
公开(公告)日：2002-03-28
申请号：PCT/DE2000/004507
申请日：2000-12-16
IPC分类号： H04L27/20 , H04B1/04 , H04J11/00 , H04L27/26 , H04L27/36 , H03F1/32
CPC分类号： H04L27/368 , H04L27/2602 , H04L27/2626
摘要： The invention relates to a transmitter for transmitting signals over radio channels and to a method for transmitting signals over radio channels. Said transmitter or said method is used for determining a transfer characteristic of an amplifier (8) in the transmitter. Symbols in OFDM signals to be transmitted are multiplied with measuring signals at predetermined times in order to then compare the OFDM symbol that has been multiplied with the measuring signal before and after the amplifier, to determine the transfer characteristic of the amplifier (8). This transfer characteristic of the amplifier (8) is then used by a predistorter (4) to predistort the signals according to this transfer characteristic. The measuring signal that is generated by a signal generator (13) is entered into a symbol of the fast information channel, said measuring signal having an amplitude which drives the multiplied symbol into the saturation range of the amplifier (8) in terms of its amplitude.
摘要翻译：提供了一种用于通过无线电信道和用于经由无线电信道传输信号的方法发送的信号的发送器。发射器和用于确定在发射器的放大器（8）的传递特性的方法。在此，符号乘以在预定时间将被发送与测量信号的OFDM信号，以便然后比较之前并相互在放大器之后已经乘以所测量的信号中的OFDM符号，以确定所述放大器的传递特性（8）。放大器（8）的这个传递特性是预失真（4）用于按照本传递特性来预失真的信号。从产生一个信号发生器（13）产生的测量信号，被扫描到快速信息信道的码元，其中，所述测量信号的振幅，其相对于它在放大器（8）的饱和区域振幅操作相乘符号。

112. 发明申请

WO02017586A1 MULTICARRIER TRANSMITTER CIRCUIT ARRANGEMENT WITH PREDISTORTION LINEARISATION METHOD 审中-公开
标题翻译：具有预测线性化方法的多功能发射机电路布置
公开(公告)号：WO02017586A1
公开(公告)日：2002-02-28
申请号：PCT/EP2000/008096
申请日：2000-08-18
IPC分类号： H03F1/32 , H04L27/36
CPC分类号： H03F1/3294 , H03F1/3247 , H03F2201/3206 , H03F2201/3233 , H04L27/368
摘要： The present invention relates to a multicarrier circuit arrangement and a method for linearising a multicarrier circuit arrangement in which frequency channels are combined by using a complex mixing operation to generate a single composite complex signal, so as to achieve a complex channel separation. A predistorted complex signal is then generated by applying a complex predistortion to said complex signal. Thereby, an efficient linearisation of wideband multicarrier circuit arrangements can be achieved, since the bandwidth requirements of digital predistortion are relaxed by enabling a baseband predistortion of multicarrier signals. Furthermore, combining different frequency chan-nels at digital baseband domain makes it possible to use only one transmit chain, which means considerable reduction in the needed amount of digital/analogue components. Fore-mentioned can also be applied to feedback chain, i.e. all the frequency channels can be down-converted to predis-torter for calculation of new predistortion coefficients with only one down-conversion chain. Only one baseband pre-distorter is needed to linearise all the transmitted infor-mation because of complex channel separation. All of the intelligence and adaptivity in the proposed system is lo-cated in the digital domain, thereby enabling stable and accurate control of the transmitted signal in every operat-ing conditions.
摘要翻译：本发明涉及一种多载波电路装置和一种线性化多载波电路装置的方法，其中通过使用复合混合操作来组合频率信道以产生单个复合复合信号，从而实现复杂的信道分离。然后通过对复合信号应用复数预失真来生成预失真的复信号。因此，可以实现宽带多载波电路布置的有效线性化，因为通过启用多载波信号的基带预失真来放宽数字预失真的带宽需求。此外，在数字基带领域组合不同的频率通道可以仅使用一个发送链，这意味着所需数量/模拟组件的数量大大减少。前面提到的也可以应用于反馈链，即，可以将所有的频道下变频到预先转换器，以仅用一个下变频链来计算新的预失真系数。由于复杂的信道分离，因此只需要一个基带预失真器对所有传输的信息进行线性化。所提出的系统中的所有智能和适应性都落在数字领域，从而能够在每个操作条件下对传输信号进行稳定和准确的控制。

113. 发明申请

WO02011379A1 METHOD AND APPARATUS FOR ADAPTIVE DIGITAL PREDISTORTION IN A RADIO TRANSMITTER 审中-公开
公开(公告)号：WO02011379A1
公开(公告)日：2002-02-07
申请号：PCT/CN2001/001186
申请日：2001-07-20
IPC分类号： H04B7/005 , H03F1/32 , H04L25/03 , H04L25/49 , H04L27/36
CPC分类号： H04L27/368 , H03F1/3247
摘要： The present invention relates to a method and apparatus for adaptive digital predistortion in a radio transmitter, characterized in that said method comprising the steps of: a) preforming the non-linear transformation of a input baseband signal contrary to the characteristic of the transmission channel by the digital predistorter; b) the predistorted signal being amplified by the power amplifier after up conversion; c) feeding a part of the signals output from the PA back into an adaptive controller through a coupler; d) the adaptive controller preforming the digital signal process of the feedback signal to obtain a radiation energy of outband; e) updating the parameters of the predistorter using the method of optimization of multi-paramaters with the radiation energy of outband as a objective function. The adaptive digital predistortion system for broadband radio transmitter can pre-distort the signals to be transmitted to eliminate the non-linear characteristic of the transmission channel and to suppress the radiation energy of outband of the output signal. The predistortion system also can adaptively adjust the predistortion parameters using optimal algorithm of multi-paramaters according to non-linear slow-variety of the transmission channel.

114. 发明申请

WO01080471A3 TRANSMITTER LINEARIZATION USING FAST PREDISTORTION 审中-公开
标题翻译：使用快速预测的发射机线性化
公开(公告)号：WO01080471A3
公开(公告)日：2002-01-24
申请号：PCT/IL2001/000349
申请日：2001-04-17
IPC分类号： H03F1/32 , H04L27/36 , H04K1/02 , H04L25/03 , H04L25/49
CPC分类号： H03F1/3247 , H04L27/368
摘要： A method of generating values of a predistortion look up table (106) for linerization of a transmitter. The method includes accumulating (102) a plurality of pairs of values (100) representing input and output values of samples entering one or more non-linear elements of the transmitter, fitting the pairs of values into a parametric model (104) of at least one of the one or more non-linear elements, so as to determine values for parameters of a parametric model, and generating values of a look up table (106) responsive to the fitted parametric model.
摘要翻译：一种产生用于发射机的线性化的预失真查询表（106）的值的方法。该方法包括：累积（102）表示进入发射机的一个或多个非线性元件的样本的输入和输出值的多个值对（100），将所述对的值拟合成至少的参数模型（104）一个或多个非线性元素中的一个，以便确定参数模型的参数的值，以及响应于拟合的参数模型生成查找表（106）的值。

115. 发明申请

WO01047127A1 METHOD AND APPARATUS FOR LINEAR AMPLIFICATION OF A RADIO FREQUENCY SIGNAL 审中-公开
标题翻译：无线电频率信号的线性放大的方法和装置
公开(公告)号：WO01047127A1
公开(公告)日：2001-06-28
申请号：PCT/US2000/030336
申请日：2000-11-02
IPC分类号： H03F1/02 , H03F1/32 , H03F1/56 , H04L27/36 , H04B1/04
CPC分类号： H03F1/3247 , H03F1/0227 , H03F1/565 , H03F2200/102 , H04L27/368
摘要： A method and apparatus is provided that amplitude modulates a modulated radio frequency (RF) signal (411) by modulating the supply voltage of a power amplifier (410). The method and apparatus further provide an impedance modulator (412) that reduces output signal (415) errors in response to an error signal generated by a feedback circuit (416) that includes a quadrature modulator (506), a limiter (520), a comparator (502), and a quadrature downconverter (510). Intermodulation distortion generated in the feedback circuit (416) by delay mismatches between amplitude and phase feedback paths, and non-linear effects of AM/PM conversion in a limiter (520), are suppressed by placing limiter (520) and quadrature downconverter (510) in a forward path of the overall amplifier loop.
摘要翻译：提供了一种通过调制功率放大器（410）的电源电压来对调制射频（RF）信号（411）进行幅度调制的方法和装置。该方法和装置还提供一种阻抗调制器（412），其响应由包括正交调制器（506）的反馈电路（506）产生的误差信号减小输出信号（415）误差，限幅器（520），比较器（502）和正交下变频器（510）。通过放大限幅器（520）和正交下变频器（510）来抑制在反馈电路（416）中通过幅度和相位反馈路径之间的延迟失配以及限幅器（520）中的AM / PM转换的非线性效应产生的互调失真）在整个放大器环路的正向通路中。

116. 发明申请

WO0070749A8 BROADCAST TRANSMISSION SYSTEM WITH DISTRIBUTED CORRECTION 审中-公开
标题翻译：具有分布式校正的广播传输系统
公开(公告)号：WO0070749A8
公开(公告)日：2001-05-03
申请号：PCT/US0013008
申请日：2000-05-12
申请人： HARRIS CORP
发明人： TWITCHELL EDWIN RAY , PLONKA ROBERT
IPC分类号： H04N5/38 , H03F1/32 , H04B3/06 , H04L27/01 , H04L27/36
CPC分类号： H04L27/368 , H03F1/3247 , H03F2200/57 , H03F2201/3233
摘要： A transmission system (14) broadcasts an information signal. Within the system (14), several components (e.g., 20-24) cause distortion to the information signal as the signal is processed and proceeds toward a broadcast antenna. The group of distortion causing components (20-24) is identified as a first group, and is arranged in a sequence along a signal path (12) toward the antenna. The first group of components (20-24) performs various functions, including amplification, but each subjects the information signal to distortion shifts away from intended values. A second group of components (e.g., 28-32) modifies the information signal to compensate for the distortion shifts imposed by the first group of components (20-24). The second group of components (28-32) is located upstream of the first group of components (20-24). The second group of components (28-32) is arranged in a sequence to modify the information signal to compensate for the distortions in an order inverse to the occurrence of the distortions.
摘要翻译：传输系统（14）广播信息信号。在系统（14）内，当信号被处理时，若干组件（例如20-24）引起信息信号的失真，并向广播天线前进。失真引起部件（20-24）的组被识别为第一组，并且沿着朝向天线的信号路径（12）以顺序排列。第一组组件（20-24）执行各种功能，包括放大，但是每个组件使信息信号失真偏离预期值。第二组分量（例如28-32）修改信息信号以补偿由第一组分组（20-24）施加的失真偏移。第二组组件（28-32）位于第一组组件（20-24）的上游。第二组组件（28-32）以一个顺序排列以修改信息信号，以便以与失真发生相反的顺序补偿失真。

117. 发明申请

WO00079746A1 COMPANION NYQUIST FILTER AND LINEAR EQUALIZER WITHIN A DATA TRANSMISSION SYSTEM 审中-公开
标题翻译：在数据传输系统中的公司NYQUIS滤波器和线性均衡器
公开(公告)号：WO00079746A1
公开(公告)日：2000-12-28
申请号：PCT/US2000/017117
申请日：2000-06-22
IPC分类号： H03F1/32 , H04L25/03 , H04L27/36
CPC分类号： H04L25/03343 , H03F1/3252 , H04L25/03834 , H04L27/368
摘要： A transmission system (110) has a Nyquist filter (114) that operates upon a signal to shape signal spectrum. A first processed version of the signal is output from the Nyquist filter (114). A linear equalizer (112) of a system (110) operates upon the signal to pre-distort the signal in a manner that compensated for subsequent linear distortion. A second processed version of the signal is output from the linear equalizer (112). The linear equalizer (112) is located in parallel with the Nyquist filter (114). A combiner (118) combines the first and second processed versions of the signal.
摘要翻译：传输系统（110）具有奈奎斯特滤波器（114），该奈奎斯特滤波器（114）根据信号对信号频谱进行形状操作。信号的第一处理版本从奈奎斯特滤波器（114）输出。系统（110）的线性均衡器（112）对信号进行操作，以以补偿后续线性失真的方式对信号进行预失真。信号的第二处理版本从线性均衡器（112）输出。线性均衡器（112）与奈奎斯特滤波器（114）并联设置。组合器（118）组合信号的第一和第二处理版本。

118. 发明申请

WO00060787A1 MULTIPLEX TRANSMISSION DEVICE OF CDMA SYSTEM AND MULTIPLEX TRANSMISSION METHOD OF CDMA SYSTEM 审中-公开
标题翻译： CDMA系统的多路传输设备和CDMA系统的多路传输方法
公开(公告)号：WO00060787A1
公开(公告)日：2000-10-12
申请号：PCT/JP1999/001827
申请日：1999-04-06
IPC分类号： H04B7/26 , H04J13/00 , H04L27/36 , H04W52/52
CPC分类号： H04L27/368 , H04B7/2628 , H04W52/04
摘要： A comparator (49) compares a base band signal outputted from a D/A converter (40) with a base band signal outputted from an orthogonal demodulator (48), and a vector regulator (42) corrects the base band signal outputted from the D/A converter (40) in accordance with the result of comparison of the comparator (49).
摘要翻译：比较器（49）将从D / A转换器（40）输出的基带信号与从正交解调器（48）输出的基带信号进行比较，向量调节器（42）校正从D输出的基带信号 / A转换器（40），根据比较器（49）的比较结果。

119. 发明申请

WO00025495A1 METHOD AND APPARATUS FOR REDUCING DISTORTION OF DIGITAL DATA 审中-公开
标题翻译：减少数字数据失真的方法和装置
公开(公告)号：WO00025495A1
公开(公告)日：2000-05-04
申请号：PCT/GB1999/003425
申请日：1999-10-22
IPC分类号： H03F1/32 , H04L27/36
CPC分类号： H03F1/3241 , H04L27/367 , H04L27/368
摘要： The invention relates to a method and apparatus for reducing the effects distortion experienced by a modulated signal carrying digital data during passage across a transmission link, and is particularly suited to satellite transmission links and especially those satellite transmission links intended for transmission of signals modulated in accordance with higher order modulation schemes. The invention provides method and apparatus capable of pre-correction of both static and dynamic distortion experienced by modulated signals during transmission. A method of pre-distortion a signal, modulated to carry symbols representative of digital data, so as to offset later distortion of the signal during transmission across a transmission link, the method comprising passing the signal through a cascade of pre-distorting stages, each of which generates an approximation of the required pre-distortion, each successive stage receiving the approximation from the preceding stage so that the errors in successive approximations converge. Apparatus for pre-distortion a signal, modulated to carry symbols representative of digital data, so as to offset later distortion of the signal during transmission across a transmission link, the apparatus comprising a cascade of pre-distorting stages, each of which generates an approximation of the required pre-distortion, each successive stage receiving the approximation from the preceding stage so that the errors in successive approximations converge.
摘要翻译：本发明涉及一种减少在通过传输链路的过程中承载数字数据的调制信号所经历的影响失真的方法和装置，并且特别适用于卫星传输链路，特别是那些旨在传输按照具有更高阶调制方案。本发明提供了能够预先校正传输期间调制信号所经历的静态和动态失真的方法和装置。一种对被调制以携带代表数字数据的符号进行预失真的方法，以便在跨传输链路的传输期间偏移信号的稍后的失真，所述方法包括使信号通过级联的预失真级，每一级其产生所需预失真的近似值，每个连续级从前一级接收近似值，使得逐次逼近中的误差收敛。用于对经过调制以携带代表数字数据的符号进行预失真的装置，以便在跨越传输链路的传输过程中抵消信号的稍后的失真，该装置包括级联的预失真级，其中每一级产生近似所需的预失真，每个连续阶段接收来自前一级的近似，使得逐次逼近中的误差收敛。

120. 发明申请

WO00004634A1 METHOD AND APPARATUS FOR COMPENSATING FOR DISTORTION IN IQ MODULATORS 审中-公开
标题翻译：用于补偿IQ调制器中的失真的方法和装置
公开(公告)号：WO00004634A1
公开(公告)日：2000-01-27
申请号：PCT/GB1999/001996
申请日：1999-06-25
IPC分类号： H03C3/40 , H03D3/00 , H03F1/32 , H04L27/34 , H04L27/36 , H03C1/06
CPC分类号： H03F1/3241 , H03C3/40 , H03D3/009 , H04L27/368
摘要： A distortion compensating apparatus for use in IQ modulation and demodulation techniques wherein a first distortion arrangement distorts the I-signal by adding to the I-signal a first weighted function of the I-signal and a first weighted function of the Q-signal and a second distortion arrangement distorts for Q-signal by adding to the Q-signal a second weighted function of the I-signal and a second weighted function of the Q-signal, such that the weighted functions of the I-signal are independent of the Q-signal and the weighted functions of the Q-signal are independent of the I-signal. This enable distortions to be compensated in both sidebands of the IQ modulated signal.
摘要翻译：一种在IQ调制和解调技术中使用的失真补偿装置，其中第一失真装置通过将I信号的第一加权函数和Q信号的第一加权函数和I信号加到I信号来扭曲I信号，通过向Q信号添加I信号的第二加权函数和Q信号的第二加权函数，使得I信号的加权函数独立于Q信号，第二失真排列扭曲Q信号信号和Q信号的加权函数独立于I信号。这使得能够在IQ调制信号的两个边带中补偿失真。

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