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31. 发明申请

WO00062421A1 DIGITAL FILTER AND METHOD FOR PERFORMING A MULTIPLICATION BASED ON A LOOK-UP TABLE 审中-公开
标题翻译：数字滤波器和基于查找表进行多路复用的方法
公开(公告)号：WO00062421A1
公开(公告)日：2000-10-19
申请号：PCT/EP1999/002762
申请日：1999-04-14
IPC分类号： H03H17/02 , H03H17/04 , H03H17/06
CPC分类号： H03H17/0226 , H03H17/0405 , H03H17/0607
摘要： A digital filter and a multiplication method are described, which lead to an efficient architecture for a hardware implementation of digital FIR and IIR filters into FPGAs. The multiplications of input sample data and delayed sample data with filter coefficients are performed by addressing look-up tables in which corresponding multiplication results are prestored. The size of the look-up tables is reduced by storing only those multiplication results which cannot be obtained by a shifting operation performed on the other pre-stored multiplication results, the input sample data, or the delayed sample data. Thereby, the size of the look-up tables can be compressed significantly such that an implementation of large digital filters into FPGAs is possible.
摘要翻译：描述了数字滤波器和乘法方法，其导致用于将数字FIR和IIR滤波器硬件实现到FPGA中的有效架构。输入采样数据和具有滤波器系数的延迟采样数据的乘法通过寻址预置的相应乘法结果的查找表来执行。通过仅存储那些通过对其他预先存储的乘法结果，输入的采样数据或延迟的采样数据执行的移位操作而不能获得的相乘结果来减小查找表的大小。因此，可以显着地压缩查找表的大小，使得可以实现大型数字滤波器到FPGA中。

32. 发明申请

WO1997002714A2 CODE DIVISION MULTIPLE ACCESS (CDMA) COMMUNICATION SYSTEM 审中-公开
标题翻译：代码段多路访问（CDMA）通信系统
公开(公告)号：WO1997002714A2
公开(公告)日：1997-01-23
申请号：PCT/US1996011063
申请日：1996-06-27
申请人： INTERDIGITAL TECHNOLOGY CORPORATION
发明人： INTERDIGITAL TECHNOLOGY CORPORATION , LOMP, Gary , OZLUTURK, Fatih , KOWALSKI, John , REGIS, Robert , LUDDY, Michael , MARRA, Alexander , JACQUES, Alexander
IPC分类号： H04Q07/30
CPC分类号： H04B7/2637 , G06F13/374 , H03H17/0226 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70754 , H04B1/70755 , H04B1/70758 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/2628 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/70707 , H04B2201/7071 , H04J13/00 , H04J13/004 , H04J13/0048 , H04J13/0077 , H04J13/10 , H04J13/107 , H04J13/12 , H04J13/16 , H04J2013/0037 , H04L1/0001 , H04L1/004 , H04L1/0042 , H04L1/0047 , H04L1/0054 , H04L1/0059 , H04L5/1446 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04N1/00912 , H04N1/3333 , H04N2201/3335 , H04W52/04 , H04W52/08 , H04W52/143 , H04W52/146 , H04W52/24 , H04W52/241 , H04W52/245 , H04W52/247 , H04W52/26 , H04W52/262 , H04W52/322 , H04W52/325 , H04W52/343 , H04W52/346 , H04W52/36 , H04W52/367 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/54 , H04W52/60 , Y02D10/14
摘要： A multiple access, spread-spectrum communication system processes a plurality of information signals received by a Radio Carrier Station (RCS) over telecommunication lines for simultaneous transmission over a radio frequency (RF) channel as a code-division-multiplexed (CDM) signal to a group of Subscriber Units (SUs). The RCS receives a call request signal that corresponds to a telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The RCS includes a plurality of Code Division Multiple Access (CDMA) modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an information signal with a message code signal to provide a CDM processed signal. The RCS includes a system channel controller coupled to receive a remote call. An RF transmitter is connected to all of the modems to combine the CDM processed signals with the global pilot code signal to generate a CDM signal. The RF transmitter also modulates a carrier signal with the CDM signal and transmits the modulated carrier signal through an RF communication channel to the SUs. Each SU includes a CDMA modem which is also synchronized to the global pilot signal. The CDMA modem despreads the CDM signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the RCS and the SUs, and system capacity management for maintaining a maximum number of active SUs for improved system performance.
摘要翻译：多址，扩频通信系统通过电信线处理由无线电载波台（RCS）接收的多个信息信号，以便通过射频（RF）信道作为码分复用（CDM）信号同时传输，一组用户单位（SU）。 RCS接收对应于电信线信息信号的呼叫请求信号，以及识别用户接收呼叫的用户识别信号。 RCS包括多个码分多址（CDMA）调制解调器，其中之一提供全局导频码信号。调制解调器提供与全局导频信号同步的消息代码信号。每个调制解调器将信息信号与消息代码信号组合以提供CDM处理的信号。 RCS包括耦合以接收远程呼叫的系统信道控制器。 RF发射器连接到所有调制解调器，以将CDM处理的信号与全局导频代码信号组合以产生CDM信号。 RF发射机还利用CDM信号调制载波信号，并通过RF通信信道将调制载波信号发送到SU。每个SU包括也与全局导频信号同步的CDMA调制解调器。 CDMA调制解调器解扩CDM信号并向用户提供解扩信息信号。该系统包括用于维持RCS和SU的最小系统发射功率水平的闭环功率控制系统，以及用于维持最大数量的主动SU以提高系统性能的系统容量管理。

33. 发明申请

WO1997002665A2 AUTOMATIC POWER CONTROL SYSTEM FOR A CODE DIVISION MULTIPLE ACCESS (CDMA) COMMUNICATIONS SYSTEM 审中-公开
标题翻译：一种码分多址（CDMA）通信系统的自动功率控制系统
公开(公告)号：WO1997002665A2
公开(公告)日：1997-01-23
申请号：PCT/US1996011060
申请日：1996-06-27
申请人： INTERDIGITAL TECHNOLOGY CORPORATION
发明人： INTERDIGITAL TECHNOLOGY CORPORATION , LOMP, Gary , OZLUTURK, Fatih , KOWALSKI, John
IPC分类号： H04B07/005
CPC分类号： H04B7/2637 , G06F13/374 , H03H17/0226 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70754 , H04B1/70755 , H04B1/70758 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/2628 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/70707 , H04B2201/7071 , H04J13/00 , H04J13/004 , H04J13/0048 , H04J13/0077 , H04J13/10 , H04J13/107 , H04J13/12 , H04J13/16 , H04J2013/0037 , H04L1/0001 , H04L1/004 , H04L1/0042 , H04L1/0047 , H04L1/0054 , H04L1/0059 , H04L5/1446 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04N1/00912 , H04N1/3333 , H04N2201/3335 , H04W52/04 , H04W52/08 , H04W52/143 , H04W52/146 , H04W52/24 , H04W52/241 , H04W52/245 , H04W52/247 , H04W52/26 , H04W52/262 , H04W52/322 , H04W52/325 , H04W52/343 , H04W52/346 , H04W52/36 , H04W52/367 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/54 , H04W52/60 , Y02D10/14
摘要： An automatic power control (APC) system for a spread-spectrum communications system includes an automatic forward power control (AFPC) system, and an automatic reverse power control (ARPC) system. In the AFPC, each subscriber unit (SU) measures a forward signal-to-noise ratio of a respective forward channel information signal to generate a respective forward channel error signal which includes a measure of the uncorrelated noise in the channel and a measure of the error between the respective forward signal-to-noise ration and a pre determined signal-to-noise value. A control signal generated from the respective forward channel error signal is transmitted as part of a respective reverse channel information signal. A base unit includes AFPC receivers which receive respective reverse channel information signals and extract the forward channel error signals therefrom to adjust the power levels of the respective forward spread-spectrum signals. In the ARPC system, each base measures a reverse signal-to-noise ratio of each of the respective reverse channel information signals and generates a respective reverse channel error signal which includes a measure of the uncorrelated noise in the channel and a measure of the error between the respective reverse signal-to-noise ratio and a pre determined signal-to-noise value. The base unit transmits a control signal generated from the respective reverse channel error signal as a part of a respective forward channel information signal. Each SU includes an ARPC receiver which receives the forward channel information signal and extracts the respective reverse error signal to adjust the reverse transmit power level of the respective reverse spread-spectrum signal.
摘要翻译：用于扩频通信系统的自动功率控制（APC）系统包括自动正向功率控制（AFPC）系统和自动反向功率控制（ARPC）系统。在AFPC中，每个用户单元（SU）测量相应的前向信道信息信号的正向信噪比，以产生相应的前向信道误差信号，该信道误差信号包括信道中不相关噪声的量度，相应的正向信噪比和预定信号噪声值之间的误差。从相应的正向信道误差信号产生的控制信号作为相应的反向信道信息信号的一部分被发送。基本单元包括AFPC接收机，其接收相应的反向信道信息信号并从其中提取前向信道误差信号，以调整各个正向扩频信号的功率电平。在ARPC系统中，每个基站测量每个反向信道信息信号的反向信噪比并产生相应的反向信道误差信号，该反向信道误差信号包括信道中不相关噪声的量度和误差的量度在相应的反向信噪比和预定信号噪声值之间。基本单元发送从各个反向信道误差信号生成的控制信号作为各个前向信道信息信号的一部分。每个SU包括ARPC接收机，其接收前向信道信息信号并提取相应的反向误差信号以调整相应的反扩频信号的反向发射功率电平。

34. 发明申请

WO2006076693A8 METHOD AND APPARATUS FOR A TRANSMISSION SIGNAL UP-CONVERTING FILTER 审中-公开
标题翻译：传输信号上变频滤波器的方法和装置
公开(公告)号：WO2006076693A8
公开(公告)日：2007-08-23
申请号：PCT/US2006001446
申请日：2006-01-12
申请人： MARVELL WORLD TRADE LTD
发明人： JIANG STEVE XUEFENG , XU SIMON
IPC分类号： H03M7/00
CPC分类号： H04L25/03834 , H03H17/0226 , H03H17/0621 , H03H17/0657 , H04B1/0003 , H04B1/0025
摘要： A digital up-sampling converter (DUSC) employs a signal input provided by a digital signal process (DSP) (10) at a first rate feeding a Square Root Raised Cosine (SRRC) filter (12, 14) which provides for table look up of filter coefficients for a multiple symbol span and provides a sampling output at a second rate which is a multiple M of the first rate. A digital to analog converter (DAC) (16, 18) receives the sampling output at the second rate for conversion to an analog signal and a low pass analog filter (20, 22) processes the analog signal for delivery to an RF transmitter.
摘要翻译：数字上采样转换器（DUSC）采用由数字信号处理（DSP）（10）提供的信号输入，以提供平方根余弦（SRR）的滤波器（12,14）的第一速率提供表查找的多符号跨度的滤波器系数，并以第一速率的倍数M提供第二速率的采样输出。数模转换器（DAC）（16,18）以第二速率接收采样输出以转换为模拟信号，低通模拟滤波器（20,22）处理模拟信号以传送到RF发射器。

35. 发明申请

WO2006076693A3 METHOD AND APPARATUS FOR A TRANSMISSION SIGNAL UP-CONVERTING FILTER 审中-公开
标题翻译：用于传输信号上变频滤波器的方法和设备
公开(公告)号：WO2006076693A3
公开(公告)日：2007-02-08
申请号：PCT/US2006001446
申请日：2006-01-12
申请人： UTSTARCOM INC
发明人： JIANG STEVE XUEFENG
IPC分类号： H03M7/00
CPC分类号： H04L25/03834 , H03H17/0226 , H03H17/0621 , H03H17/0657 , H04B1/0003 , H04B1/0025
摘要： A digital up-sampling converter (DUSC) employs a signal input provided by a digital signal process (DSP) (10) at a first rate feeding a Square Root Raised Cosine (SRRC) filter (12, 14) which provides for table look up of filter coefficients for a multiple symbol span and provides a sampling output at a second rate which is a multiple M of the first rate. A digital to analog converter (DAC) (16, 18) receives the sampling output at the second rate for conversion to an analog signal and a low pass analog filter (20, 22) processes the analog signal for delivery to an RF transmitter.
摘要翻译：数字上采样转换器（DUSC）采用由数字信号处理（DSP）（10）以第一速率提供的信号输入馈送平方根升余弦（SRRC）滤波器（12,14），该滤波器提供表查找用于多符号跨度的滤波器系数，并且以第一速率的倍数M的第二速率提供采样输出。数模转换器（DAC）（16,18）以第二速率接收采样输出以转换为模拟信号，低通模拟滤波器（20,22）处理该模拟信号以传送至RF发送器。

36. 发明申请

WO1998023029A1 REDUCED POWER FIR FILTER 审中-公开
标题翻译：降低功率FIR滤波器
公开(公告)号：WO1998023029A1
公开(公告)日：1998-05-28
申请号：PCT/US1997021213
申请日：1997-11-17
申请人： CIRRUS LOGIC, INC.
发明人： CIRRUS LOGIC, INC. , PASTORELLO, Douglas
IPC分类号： H03H17/02
CPC分类号： H03H17/06 , H03H17/0226
摘要： A reduced power FIR filter may be utilized as the digital decimation filter for a delta sigma ADC. The FIR filter utilizes a serial bit stream which is part of the control path of the filter. Thus, operations of the circuitry which comprises the filter may be controlled depending upon the data presented at the output of the delta sigma modulator. In particular, filter operations may be enabled only for a given digital state, for example, a digital 1 state. Thus, the filter operations may be enabled only for typically half of the bits from the serial bit stream and the power usage of the digital filter is significantly reduced.
摘要翻译：降低功率FIR滤波器可以用作Δ西格玛ADC的数字抽取滤波器。 FIR滤波器利用串行比特流，该比特流是滤波器的控制路径的一部分。因此，可以根据呈现在Δ-Σ调制器的输出处的数据来控制包括滤波器的电路的操作。特别地，可以仅针对给定的数字状态（例如，数字1状态）使能滤波器操作。因此，滤波器操作可以仅来自串行比特流的典型的一半比特，并且数字滤波器的功率使用量显着降低。

37. 发明申请

WO1997050173A1 EFFICIENT MULTICHANNEL FILTERING FOR CDMA MODEMS 审中-公开
标题翻译： CDMA模式的高效多通道滤波
公开(公告)号：WO1997050173A1
公开(公告)日：1997-12-31
申请号：PCT/US1997010909
申请日：1997-06-24
申请人： INTERDIGITAL TECHNOLOGY CORPORATION
发明人： INTERDIGITAL TECHNOLOGY CORPORATION , REGIS, Robert, T.
IPC分类号： H03H17/02
CPC分类号： H04B1/7075 , H03H17/0226 , H03H17/06 , H04B1/707 , H04B1/70753 , H04B1/70755 , H04B1/70758 , H04B1/708 , H04B1/7093 , H04B2201/70702 , H04B2201/70707
摘要： An efficient, multichannel filter for CDMA modems permits multiple serial, digital bit streams to be filtered by digital signal processing techniques including sample weighting and summing functions. Each individual channel may have custom weighting coefficients or weighting coefficients common for all channels. If the weighting coefficients are by adaption, the same approach may be taken. The multichannel FIR filter is implemented with no multipliers and a reduction in the number of adders. To increase the speed of operation, the filter structure utilizes look-up tables storing the weighting coefficients. The invention can be embodied either as a field programmable gate array or an application specific integrated circuit. The use of look-up tables saves significant chip resources.
摘要翻译：用于CDMA调制解调器的有效的多通道滤波器允许通过包括采样加权和求和功能的数字信号处理技术对多个串行数字比特流进行滤波。每个单独的通道可以具有对于所有通道共同的自定义加权系数或加权系数。如果通过适应加权系数，则可以采用相同的方法。多通道FIR滤波器实现没有乘法器和减少加法器的数量。为了提高操作速度，滤波器结构利用存储加权系数的查找表。本发明可以被实现为现场可编程门阵列或专用集成电路。查找表的使用节省了大量的芯片资源。

38. 发明申请

WO9702714A3 CODE DIVISION MULTIPLE ACCESS (CDMA) COMMUNICATION SYSTEM 审中-公开
标题翻译：代码段多路访问（CDMA）通信系统
公开(公告)号：WO9702714A3
公开(公告)日：1997-02-13
申请号：PCT/US9611063
申请日：1996-06-27
申请人： INTERDIGITAL TECH CORP
发明人： LOMP GARY , OZLUTURK FATIH , KOWALSKI JOHN , REGIS ROBERT , LUDDY MICHAEL , MARRA ALEXANDER , JACQUES ALEXANDER
IPC分类号： H03K3/84 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24 , H04Q7/30
CPC分类号： H04B7/2637 , G06F13/374 , H03H17/0226 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70754 , H04B1/70755 , H04B1/70758 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/2628 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/70707 , H04B2201/7071 , H04J13/00 , H04J13/004 , H04J13/0048 , H04J13/0077 , H04J13/10 , H04J13/107 , H04J13/12 , H04J13/16 , H04J2013/0037 , H04L1/0001 , H04L1/004 , H04L1/0042 , H04L1/0047 , H04L1/0054 , H04L1/0059 , H04L5/1446 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04N1/00912 , H04N1/3333 , H04N2201/3335 , H04W52/04 , H04W52/08 , H04W52/143 , H04W52/146 , H04W52/24 , H04W52/241 , H04W52/245 , H04W52/247 , H04W52/26 , H04W52/262 , H04W52/322 , H04W52/325 , H04W52/343 , H04W52/346 , H04W52/36 , H04W52/367 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/54 , H04W52/60 , Y02D10/14
摘要： A multiple access, spread-spectrum communication system processes a plurality of information signals received by a Radio Carrier Station (RCS) over telecommunication lines for simultaneous transmission over a radio frequency (RF) channel as a code-division-multiplexed (CDM) signal to a group of Subscriber Units (SUs). The RCS receives a call request signal that corresponds to a telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The RCS includes a plurality of Code Division Multiple Access (CDMA) modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an information signal with a message code signal to provide a CDM processed signal. The RCS includes a system channel controller coupled to receive a remote call. An RF transmitter is connected to all of the modems to combine the CDM processed signals with the global pilot code signal to generate a CDM signal. The RF transmitter also modulates a carrier signal with the CDM signal and transmits the modulated carrier signal through an RF communication channel to the SUs. Each SU includes a CDMA modem which is also synchronized to the global pilot signal. The CDMA modem despreads the CDM signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the RCS and the SUs, and system capacity management for maintaining a maximum number of active SUs for improved system performance.
摘要翻译：多址，扩频通信系统通过电信线路处理由无线电载波台（RCS）接收的多个信息信号，以便通过射频（RF）信道作为码分复用（CDM）信号同时发送到一组用户单位（SU）。 RCS接收对应于电信线信息信号的呼叫请求信号，以及标识用户接收呼叫的用户识别信号。 RCS包括多个码分多址（CDMA）调制解调器，其中之一提供全局导频码信号。调制解调器提供与全局导频信号同步的消息代码信号。每个调制解调器将信息信号与消息代码信号组合以提供CDM处理的信号。 RCS包括耦合以接收远程呼叫的系统信道控制器。 RF发射机连接到所有调制解调器以将CDM处理的信号与全局导频码信号组合以产生CDM信号。 RF发射机还利用CDM信号调制载波信号，并通过RF通信信道将调制载波信号发送到SU。每个SU包括也与全局导频信号同步的CDMA调制解调器。 CDMA调制解调器解扩CDM信号，并向用户提供解扩信息信号。该系统包括用于维持RCS和SU的最小系统发射功率水平的闭环功率控制系统，以及用于维持最大数量的主动SU以提高系统性能的系统容量管理。

39. 发明申请

WO2013123358A1 MULTI-CHANNEL SCALABLE EEG ACQUISITION SYSTEM ON A CHIP WITH INTEGRATED PATIENT SPECIFIC SEIZURE CLASSIFICATION AND RECORDING PROCESSOR 审中-公开
标题翻译：多通道可扩展脑电采集系统与一体化患者特异性分类和记录处理器
公开(公告)号：WO2013123358A1
公开(公告)日：2013-08-22
申请号：PCT/US2013/026389
申请日：2013-02-15
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY , MASDAR INSTITUTE OF SCIENCE AND TECHNOLOGY
发明人： YOO, Jerald , CHANDRAKASAN, Anantha, P. , YAN, Long , EL-DAMAK, Dina, Reda , SHOEB, Ali, Hossam , BIN ALTAF, Muhammad, Awais
IPC分类号： A61B5/04
CPC分类号： A61B5/04012 , A61B5/0476 , A61B5/4094 , A61B2562/166 , H03F3/387 , H03F2200/294 , H03F2200/375 , H03H17/0226 , H03H17/0248
摘要： An integrated circuit chip and method for EEG monitoring. In one embodiment, the integrated circuit chip includes an Analog Front End cell in communication with an electrode and a Classification Processor wherein a signal received from the electrode is processed by the Classification Engine cell and designated as seizure or non-seizure. In another embodiment, the Analog Front End cell includes an amplifier cell in communication with an electrode; and an ASPU cell in communication with the amplifier cell. In yet another embodiment, the Classification Processor includes a DBE Channel Controller cell; a Feature Extraction Engine Processor cell, and a Classification Engine cell in communication with the Feature Extraction Engine Processor cells and the DBE Channel Controller cell.
摘要翻译：一种用于脑电监测的集成电路芯片和方法。在一个实施例中，集成电路芯片包括与电极连接的模拟前端单元和分类处理器，其中从电极接收的信号由分类引擎单元处理并被指定为扣押或非卡扣。在另一实施例中，模拟前端单元包括与电极连通的放大器单元; 以及与放大器单元通信的ASPU单元。在另一个实施例中，分类处理器包括DBE信道控制器小区; 特征提取引擎处理器单元，以及与特征提取引擎处理器单元和DBE通道控制器单元通信的分类引擎单元。

40. 发明申请

WO2006076693A2 METHOD AND APPARATUS FOR A TRANSMISSION SIGNAL UP-CONVERTING FILTER 审中-公开
标题翻译：传输信号上变频滤波器的方法和装置
公开(公告)号：WO2006076693A2
公开(公告)日：2006-07-20
申请号：PCT/US2006/001446
申请日：2006-01-12
申请人： UTSTARCOM, INC.
发明人： JIANG, Steve Xuefeng
IPC分类号： G06F7/38
CPC分类号： H04L25/03834 , H03H17/0226 , H03H17/0621 , H03H17/0657 , H04B1/0003 , H04B1/0025
摘要： A digital up-sampling converter (DUSC) employs a signal input provided by a digital signal process (DSP) (10) at a first rate feeding a Square Root Raised Cosine (SRRC) filter (12, 14) which provides for table look up of filter coefficients for a multiple symbol span and provides a sampling output at a second rate which is a multiple M of the first rate. A digital to analog converter (DAC) (16, 18) receives the sampling output at the second rate for conversion to an analog signal and a low pass analog filter (20, 22) processes the analog signal for delivery to an RF transmitter.
摘要翻译：数字上采样转换器（DUSC）采用由数字信号处理（DSP）（10）提供的信号输入，以第一速率供给平方根升余弦（SRRC）滤波器（12,14），其提供表查找的多符号跨度的滤波器系数，并以第一速率的倍数M提供第二速率的采样输出。数模转换器（DAC）（16,18）以第二速率接收用于转换为模拟信号的采样输出，而低通模拟滤波器（20,22）处理模拟信号以传送到RF发射器。

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