CN103999078B - 具有包含用于fir滤波的矢量卷积函数的指令集的矢量处理器 - Google Patents

具有包含用于fir滤波的矢量卷积函数的指令集的矢量处理器 Download PDF

Info

Publication number
CN103999078B
CN103999078B CN201280060980.3A CN201280060980A CN103999078B CN 103999078 B CN103999078 B CN 103999078B CN 201280060980 A CN201280060980 A CN 201280060980A CN 103999078 B CN103999078 B CN 103999078B
Authority
CN
China
Prior art keywords
vector
convolution
coefficient
coefficients
impulse response
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201280060980.3A
Other languages
English (en)
Other versions
CN103999078A (zh
Inventor
K·阿扎德特
于盟林
J·H·奥斯莫
J·威廉姆斯
A·莫利纳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intel Corp
Original Assignee
Intel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intel Corp filed Critical Intel Corp
Publication of CN103999078A publication Critical patent/CN103999078A/zh
Application granted granted Critical
Publication of CN103999078B publication Critical patent/CN103999078B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/15—Correlation function computation including computation of convolution operations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F5/01—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/3001—Arithmetic instructions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/30036—Instructions to perform operations on packed data, e.g. vector, tile or matrix operations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline, look ahead
    • G06F9/3885—Concurrent instruction execution, e.g. pipeline, look ahead using a plurality of independent parallel functional units
    • G06F9/3893—Concurrent instruction execution, e.g. pipeline, look ahead using a plurality of independent parallel functional units controlled in tandem, e.g. multiplier-accumulator
    • G06F9/3895—Concurrent instruction execution, e.g. pipeline, look ahead using a plurality of independent parallel functional units controlled in tandem, e.g. multiplier-accumulator for complex operations, e.g. multidimensional or interleaved address generators, macros
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0288—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3258—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits based on polynomial terms
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03203—Trellis search techniques
    • H04L25/03216—Trellis search techniques using the M-algorithm
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2334—Demodulator circuits; Receiver circuits using non-coherent demodulation using filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2623—Reduction thereof by clipping
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/336—A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3209—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion the amplifier comprising means for compensating memory effects
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3212—Using a control circuit to adjust amplitude and phase of a signal in a signal path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3224—Predistortion being done for compensating memory effects
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3233—Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Algebra (AREA)
  • Artificial Intelligence (AREA)
  • Data Mining & Analysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Databases & Information Systems (AREA)
  • Computing Systems (AREA)
  • Computer Hardware Design (AREA)
  • Complex Calculations (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Error Detection And Correction (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Image Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Transceivers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Executing Machine-Instructions (AREA)
  • Advance Control (AREA)

Abstract

提供了一种矢量处理器，其具有包含矢量卷积函数的指令集。公开的矢量处理器通过获取包含至少N1+N2‑1输入样本的矢量在输入信号和滤波器冲击响应之间执行卷积函数；获取矢量的N2时移版本(包括零移动版本)，其中每个时移版本包含N1样本；以及利用N1系数的矢量执行该矢量的时移版本的加权求和；以及对每个加权和产生包含一个输出值的输出矢量。该矢量处理器例如响应于具有矢量输入的一个或多个矢量卷积软件指令而执行该方法。该矢量可包含多个实数或复数输入样本并且该滤波器冲击响应可利用为实数或复数的多个系数来表达。

Description

具有包含用于FIR滤波的矢量卷积函数的指令集的矢量处 理器
相关申请交叉引用
本申请要求2011年10月27日提交的、美国专利临时申请序列号61/552,242、名称为“软件数字前端(SoftDFE)信号处理和数字射频”的优先权，通过引用并入本文。本申请关联于美国专利申请序列号12/849142，2010年8月3日提交，名称为“用于提供存储器带宽有效关联加速的系统和方法”，通过引用并入本文。
技术领域
本发明涉及数字处理技术，更特别地，涉及用于矢量卷积的技术。
背景技术
矢量处理器实现包含在矢量(即，一维数据阵列)上操作的指令的指令集。另一方面，标量数字信号处理器(DSP)具有在单个数据项上操作的指令。矢量处理器对于特定工作负荷提供增强的性能。
数字处理器(如DSP和矢量处理器)通常整合专用硬件以执行数学密集型处理应用所需的软件操作，如加法，乘法，乘法累加(MAC)和移位累加。乘法累加体系结构例如认识到多种公共数据处理操作涉及两数相乘，将结果值加到另一值然后累加结果。这一基本操作可利用专用高速乘法器和累加器有效实现。
然而，已有的DSP和矢量处理器不通过具有冲击响应的滤波器提供专用指令来支持输入信号的矢量卷积。然而，处理器中越来越多地需要矢量卷积操作。在FIR滤波域，例如，卷积处理输入波形信号和滤波器的冲击响应作为所应用的时滞(延迟)的函数。卷积处理器典型地接收和处理时移输入信号和滤波器的冲击响应并对每个时移版本(每个时滞)产生一个输出值。该卷积计算可广泛用于例如在FIR滤波应用中。对于输入序列长度L和多个时滞W，所需要的计算复杂度为O(L＊W)。因为需要大量计算，因此强烈希望在多种应用中加速卷积计算。
因此对于数字处理器，如矢量处理器，存在具有支持矢量卷积函数的指令集的需求。
发明内容
总体上，提供了一种矢量处理器，具有包含矢量卷积函数的指令集。根据本发明的一方面，所公开的矢量处理器通过获取包含至少N1+N2-1输入样本的矢量在输入信号和滤波器冲击响应之间执行卷积函数；获取矢量的N2时移版本(包括零移动版本)，其中每个时移版本包含N1样本；并利用N1系数的矢量执行矢量时移版本的加权求和；并对每个加权和产生包含一个输出值的输出矢量。该矢量处理器例如响应于具有包含N1+N2-1输入样本的矢量的一个或多个矢量卷积软件指令而执行该方法。
该矢量可包含多个实数或复数输入样本，并且该滤波器冲击响应可利用作为实数或复数的多个系数来表达。该多个系数可利用降低数量的位使用多个迭代来处理，直到系数的所有位被处理；并且每个迭代的输出被移动和累加，直到系数的所有位被处理。
在进一步实施例，当由卷积支持的系数数量小于滤波器中将被处理的系数数量时；较大滤波器的较小块被迭代处理并且每个迭代的输出对每个块被累加，直到所有的较大滤波器被处理。
本发明更全面的理解以及本发明进一步特征和优点将参考如下详细描述和附图来获取。
附图说明
图1为结合本发明的特征的示例性矢量处理器的示意性框图；
图2说明了结合本发明的特征的复数矢量卷积函数；以及
图3为示例性的基于矢量的数字处理器的示意性框图，其根据本发明实施例处理矢量输入以产生矢量输出。
具体实施方式
本发明的某些方面提供了一种矢量处理器，支持矢量卷积函数。卷积指令典型地接收并处理时移输入信号和滤波器的冲击响应并对每个时移版本产生具有一个输出值的矢量。基本MAC操作可利用复数或实数输入和系数。因此，输入样本和系数可为实数和/或虚数。所公开的专用矢量卷积指令可用于实现例如数字前端信号处理中的通道滤波，RF均衡器，IQ失调校正和用于数字预失真(DPD)参数估计的卷积。如本文所使用，术语“矢量处理器”为在程序代码中的矢量数据上执行矢量指令的处理器。
本发明可用于例如手机，基站和其他网络元件。
图1为结合本发明的特征的示例性矢量处理器100的示意性框图。如图1所示，示例性矢量处理器100包括用于矢量卷积函数的一个或多个功能单元110，如下文进一步讨论。
一般地，如果矢量处理器100处理的是包括对应于矢量卷积函数和用于该函数(即，输入样本)的合适的操作数的预定义指令关键字的软件代码，指令解码器必须触发处理矢量卷积指令所需的合适的矢量卷积功能单元110(一个或多个)。注意，矢量卷积功能单元110可由一个以上指令共享。
一般地，本发明的各方面扩展了传统矢量处理器，以提供支持矢量卷积函数的增强指令集。根据本发明的方面，矢量处理器100接收具有实数或复数输入的输入矢量，应用复数矢量卷积函数至该输入并对每个时移生成具有一个输出值的矢量。
所公开的矢量处理器100具有矢量体系结构，如下文结合图3讨论，其处理一个或多个矢量输入，每个矢量输入包含并行处理的多个实数或复数标量数。
如下文结合图2进一步讨论，如果输入样本数为N1+N2-1，并且输出样本数为N2，则卷积指令执行例如单周期中1-4位的N1×N2卷积操作。此外，如果卷积的系数具有比矢量卷积功能单元系数位更多的位，则输出结果可迭代获取。例如，如果卷积由2位系数实现，并且需要12位，将采取6次迭代来获取最终结果。假设在输入中有64个样本(63被使用)，且32个系数存储于寄存器而32个输出被计算，该指令在单周期执行1024个两位系数乘以32位复数数据(16位实数+16位虚数)的MAC运算并且在6个周期执行32位复数数据(16位实数+16位虚数)乘以24位复数系数(12位实数+12位虚数)复数运算。该性能为高于通用DSP的数量等级。
图2说明了结合本发明的特征的矢量卷积函数200。一般地，矢量卷积函数200计算N位复数数据(N/2位实数和N/2位虚数)的卷积和复数对跖数据(例如，系数)。矢量卷积函数200典型地接收N1+N2-1个样本的输入矢量并处理输入矢量210N1(沿轴230)的N1个样本的时移版本220和系数，并对每个时移版本(每个时滞)产生FIR输出值225。输出矢量260包含N2个输出值。
在图2的示例性实施例中，输入矢量210包含实数或复数数据(例如，32位实数和32位虚数)的N1+N2-1个样本和利用系数被卷积的具有N1个样本(16位实数和16位虚数)的N2个时移版本220。每个系数可为二进制值(例如，或2位，4位等)。
所公开的矢量卷积函数(vec_conv())加速矢量卷积函数200中的FIR滤波，其中系数例如为二进制值(如2位，4位等)。此外，该操作可在单周期中利用足够数量的系数位进一步加速和执行，如18位。一般地，每个时移操作包含移动输入值220的FIR滤波和系数。
对于2位值的示例性卷积，FIR滤波/卷积操作可写成：
其中：
其中h(k)表示系数且x(n-k)表示时移输入值。在多相位滤波的情况下，系数hk可对于滤波器的每个相位改变。
利用具有冲击响应h的滤波器的输入信号x的卷积可写成：
输入信号x与输入信号y的关联或互相关可写成(其中信号x和/或信号y可为已知参考信号如导频信号或CDMA二进制/双跖(bipodal)码)：
对于利用系数的12位表示的示例性卷积，以6次迭代来计算FIR滤波输出(6次2位值)。
图3为示例性基于矢量的数字处理器300的示意性框图，其根据本发明实施例同时处理一个或多个复数。总体上，相对于标量实现，图3的基于矢量的实现通过并发执行不同的处理降低了实现该算法所需的复杂度或周期数。因此，基于矢量的数字处理器300包含用于矢量卷积的功能单元310。
一般地，基于矢量的数字处理器300处理输入x的矢量并生成输出的矢量y(n)。对于N1＝32和N2＝37，示例性基于矢量的数字处理器300可表示为：
(y1，y2，...y37)＝vec_cor32x37(x1，x2，...，x68)
结论
尽管本发明的示例性实施例已参考数字处理器中的数字逻辑块和存储器表来描述，本领域技术人员清楚的是，多种函数可实现于数字域，作为软件程序的处理步骤，通过电路元件或状态机的硬件，或软件和硬件的组合。该软件可应用于，例如数字信号处理器，专用集成电路或微控制器。该硬件和软件可用于实现于集成电路的电路中。
因此，本发明的函数可实现为用于实现该方法的方法和装置的形式。本发明的方面中的一个或多个可实现为程序代码形式，例如是否存储在存储介质，载入机器和/或由其执行，其中，当程序代码载入机器如处理器并由其执行时，该机器成为用于实现本发明的装置。当实现于通用处理器时，程序代码段联合该处理器来提供类似地操作具体逻辑电路的设备。本发明还可实现为集成电路、数字处理器、微处理器和微控制器中的一个或多个。
应当理解，本文示出和描述的实施例和变型仅仅是说明本发明的原理，并且多种修改可由本领域技术人员实现，而不偏离本发明的范围和精神。

Claims (8)

1.一种由矢量处理器执行的方法，其用于在输入信号和滤波器冲击响应之间执行卷积，所述方法包括：
获取包含至少N1+N2-1个输入样本的矢量；
获取所述矢量的N2个时移版本，其中每个时移版本包含N1个样本；以及
利用N1个系数的矢量执行所述矢量的所述时移版本的加权和；以及
对每个所述加权和产生包含一个输出值的输出矢量，其中所述滤波器冲击响应利用多个系数来表达，且其中所述卷积支持的系数数量小于滤波器中的系数数量；其中所述方法进一步包括迭代处理较大滤波器的较小块的步骤；其中将每个块每个迭代的输出累加直到全部所述较大滤波器均被处理。
2.根据权利要求1所述的方法，其中所述方法响应于具有包含所述N1+N2-1个输入样本的矢量的一个或多个矢量卷积软件指令而由矢量处理器执行。
3.根据权利要求1所述的方法，其中所述矢量包含多个实数或复数输入样本并且所述滤波器冲击响应利用为实数或复数的多个系数来表达。
4.根据权利要求1所述的方法，其中所述滤波器冲击响应利用多个系数来表达，且其中所述系数利用降低数量的位使用多个迭代来处理，直到处理了所述系数的所有位；其中每个迭代的输出被移位和累加，直到处理了所述系数的所有位。
5.一种矢量处理器，其在输入信号和滤波器冲击响应之间执行卷积，包含：
存储器；以及
至少一个硬件设备，耦合于所述存储器，操作用于：
获取包含至少N1+N2-1个输入样本的矢量；
获取所述矢量的N2个时移版本，其中每个时移版本包含N1个样本；以及
利用N1个系数的矢量执行所述矢量的所述时移版本的加权和；以及
对于每个所述加权和产生包含一个输出值的输出矢量，其中所述滤波器冲击响应利用多个系数来表达且其中所述卷积支持的系数数量小于滤波器中的系数数量；其中较大滤波器的较小块被迭代处理且将每个块每个迭代的输出累加直到全部所述较大滤波器均被处理。
6.根据权利要求5所述的矢量处理器，其中矢量处理器响应于具有包含所述N1+N2-1个输入样本的矢量的一个或多个矢量卷积软件指令而执行所述卷积。
7.根据权利要求5所述的矢量处理器，其中所述矢量包含多个实数或复数输入样本并且所述滤波器冲击响应利用为实数或复数的多个系数来表达。
8.根据权利要求5所述的矢量处理器，其中所述滤波器冲击响应利用多个系数来表达且其中所述系数利用降低数量的位使用多个迭代来处理，直到处理了所述系数的所有位；其中每个迭代的输出被移位和累加，直到处理了所述系数的所有位。
CN201280060980.3A 2011-10-27 2012-10-26 具有包含用于fir滤波的矢量卷积函数的指令集的矢量处理器 Expired - Fee Related CN103999078B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201161552242P 2011-10-27 2011-10-27
US61/552,242 2011-10-27
PCT/US2012/062182 WO2013063440A1 (en) 2011-10-27 2012-10-26 Vector processor having instruction set with vector convolution funciton for fir filtering

Publications (2)

Publication Number Publication Date
CN103999078A CN103999078A (zh) 2014-08-20
CN103999078B true CN103999078B (zh) 2017-03-22

Family

ID=48168570

Family Applications (8)

Application Number Title Priority Date Filing Date
CN201280060788.4A Expired - Fee Related CN103999417B (zh) 2011-10-27 2012-10-26 软件数字前端信号处理
CN201710321171.8A Active CN107276936B (zh) 2011-10-27 2012-10-26 基于块的波峰因子降低（cfr）
CN201280060980.3A Expired - Fee Related CN103999078B (zh) 2011-10-27 2012-10-26 具有包含用于fir滤波的矢量卷积函数的指令集的矢量处理器
CN201280060978.6A Active CN103988473B (zh) 2011-10-27 2012-10-26 基于块的波峰因子降低(cfr)
CN201280060981.8A Active CN103999416B (zh) 2011-10-27 2012-10-26 使用最大似然比特流编码的信号的直接数字合成
CN201810754065.3A Pending CN109144570A (zh) 2011-10-27 2012-10-26 具有带有复数指数非线性函数的指令集的数字处理器
CN201280060773.8A Pending CN103975564A (zh) 2011-10-27 2012-10-26 具有拥有由用户定义的用于数字预失真(dpd)以及其它非线性应用的非线性函数的指令集的处理器
CN201280060979.0A Expired - Fee Related CN103999039B (zh) 2011-10-27 2012-10-26 具有带有复数指数非线性函数的指令集的数字处理器

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CN201280060788.4A Expired - Fee Related CN103999417B (zh) 2011-10-27 2012-10-26 软件数字前端信号处理
CN201710321171.8A Active CN107276936B (zh) 2011-10-27 2012-10-26 基于块的波峰因子降低（cfr）

Family Applications After (5)

Application Number Title Priority Date Filing Date
CN201280060978.6A Active CN103988473B (zh) 2011-10-27 2012-10-26 基于块的波峰因子降低(cfr)
CN201280060981.8A Active CN103999416B (zh) 2011-10-27 2012-10-26 使用最大似然比特流编码的信号的直接数字合成
CN201810754065.3A Pending CN109144570A (zh) 2011-10-27 2012-10-26 具有带有复数指数非线性函数的指令集的数字处理器
CN201280060773.8A Pending CN103975564A (zh) 2011-10-27 2012-10-26 具有拥有由用户定义的用于数字预失真(dpd)以及其它非线性应用的非线性函数的指令集的处理器
CN201280060979.0A Expired - Fee Related CN103999039B (zh) 2011-10-27 2012-10-26 具有带有复数指数非线性函数的指令集的数字处理器

Country Status (6)

Country Link
US (14) US9280315B2 (zh)
EP (6) EP2772033A4 (zh)
JP (7) JP6189848B2 (zh)
KR (7) KR102015680B1 (zh)
CN (8) CN103999417B (zh)
WO (6) WO2013066756A2 (zh)

Families Citing this family (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9363068B2 (en) 2010-08-03 2016-06-07 Intel Corporation Vector processor having instruction set with sliding window non-linear convolutional function
RU2012102842A (ru) 2012-01-27 2013-08-10 ЭлЭсАй Корпорейшн Инкрементное обнаружение преамбулы
US9280315B2 (en) 2011-10-27 2016-03-08 Intel Corporation Vector processor having instruction set with vector convolution function for fir filtering
KR20130080939A (ko) * 2012-01-06 2013-07-16 삼성전자주식회사 입력 신호의 피크 제거 방법 및 장치
US9100253B2 (en) * 2012-08-07 2015-08-04 Freescale Semiconductor, Inc. Block-based crest factor reduction
WO2014085976A1 (en) * 2012-12-04 2014-06-12 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for crest factor reduction
US9118512B2 (en) 2013-03-06 2015-08-25 Qualcomm Incorporated Combined imbalance compensation and equalization of a signal
US9319916B2 (en) 2013-03-15 2016-04-19 Isco International, Llc Method and appartus for signal interference processing
US9923595B2 (en) 2013-04-17 2018-03-20 Intel Corporation Digital predistortion for dual-band power amplifiers
GB2514595B (en) * 2013-05-30 2017-10-18 Imp Innovations Ltd Method and apparatus for estimating frequency domain representation of signals
EP3042478B1 (en) * 2013-09-03 2018-08-22 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for application of distortion shaping when using peak-to-average ratio reduction
US9619227B2 (en) * 2013-11-15 2017-04-11 Qualcomm Incorporated Vector processing engines (VPEs) employing tapped-delay line(s) for providing precision correlation / covariance vector processing operations with reduced sample re-fetching and power consumption, and related vector processor systems and methods
MX359006B (es) 2013-11-26 2018-09-12 Plusn Llc Sistema y método para agregación de portadoras de radiofrecuencia.
US9331725B2 (en) 2014-01-03 2016-05-03 Maxlinear, Inc. Method and system for crest factor reduction
US9794888B2 (en) 2014-05-05 2017-10-17 Isco International, Llc Method and apparatus for increasing performance of a communication link of a communication node
US9628119B2 (en) * 2014-06-27 2017-04-18 Nxp Usa, Inc. Adaptive high-order nonlinear function approximation using time-domain volterra series to provide flexible high performance digital pre-distortion
KR101567229B1 (ko) 2014-07-07 2015-11-09 현대자동차주식회사 요소수 오버플로우 방지타입 요소수 필러 넥 및 요소수 탱크, 실외형 필러넥을 갖춘 요소수 후처리 시스템
US20160034421A1 (en) * 2014-08-01 2016-02-04 Infineon Technologies Ag Digital pre-distortion and post-distortion based on segmentwise piecewise polynomial approximation
US10261939B2 (en) * 2014-08-20 2019-04-16 Nxp Usa, Inc. Performing lookup table operations on a single-instruction multiple data processor
GB2531532B (en) * 2014-10-20 2020-12-30 Cambridge Consultants Radio frequency amplifier
EP3223438B1 (en) 2014-11-21 2020-03-25 Huawei Technologies Co. Ltd. Method, apparatus and device for determining modulation and coding scheme
JP2016115952A (ja) * 2014-12-10 2016-06-23 富士通株式会社 歪補償装置及び歪補償方法
WO2016108651A1 (ko) 2014-12-30 2016-07-07 주식회사 쏠리드 분산 안테나 시스템에서의 cfr 배치 방법
US10693527B2 (en) 2014-12-30 2020-06-23 Solid, Inc. Distributed antenna system including crest factor reduction module disposed at optimum position
KR102226249B1 (ko) 2014-12-30 2021-03-10 주식회사 쏠리드 분산 안테나 시스템에서의 순방향 디지털 신호 합산 방법
US9979421B2 (en) * 2015-03-02 2018-05-22 Eta Devices, Inc. Digital pre-distortion (DPD) training and calibration system and related techniques
EP3651386B1 (en) 2015-05-04 2023-08-23 ISCO International, LLC Method and apparatus for increasing the performance of communication paths for communication nodes
US9898286B2 (en) * 2015-05-05 2018-02-20 Intel Corporation Packed finite impulse response (FIR) filter processors, methods, systems, and instructions
CN105024960B (zh) * 2015-06-23 2018-11-09 大唐移动通信设备有限公司 一种dpd系统
CN106341355A (zh) * 2015-07-09 2017-01-18 深圳市中兴微电子技术有限公司 数字中频处理系统检测方法及装置
EP3362804B1 (en) * 2015-10-14 2024-01-17 WiTricity Corporation Phase and amplitude detection in wireless energy transfer systems
US9590668B1 (en) * 2015-11-30 2017-03-07 NanoSemi Technologies Digital compensator
JP7083311B2 (ja) * 2015-12-29 2022-06-10 ブルー ダニューブ システムズ， インク． マルチビームクレストファクタ低減
US20170322906A1 (en) * 2016-05-04 2017-11-09 Chengdu Haicun Ip Technology Llc Processor with In-Package Look-Up Table
US9749161B1 (en) * 2016-02-23 2017-08-29 Nxp Usa, Inc. Fixed-point conjugate gradient digital pre-distortion (DPD) adaptation
US10033413B2 (en) * 2016-05-19 2018-07-24 Analog Devices Global Mixed-mode digital predistortion
BR112016024655B1 (pt) * 2016-05-24 2024-01-09 Ericsson Telecomunicações S.A Método para administrar um fluxo de bits, codificador,decodificador, e, meio de armazenamento legível por computador
CA3024175A1 (en) 2016-06-01 2017-12-07 Isco International, Llc Method and apparatus for performing signal conditioning to mitigate interference detected in a communication system
US9787336B1 (en) * 2016-09-29 2017-10-10 Intel IP Corporation Device and method of pre-distortion of power amplifier input signals
EP3523856A4 (en) 2016-10-07 2020-06-24 NanoSemi, Inc. DIGITAL BEAM ORIENTATION PREDISTORSION
EP3586439A4 (en) 2017-02-25 2021-01-06 NanoSemi, Inc. MULTI-BAND DIGITAL PRE-STORAGE DEVICE
US10298279B2 (en) 2017-04-05 2019-05-21 Isco International, Llc Method and apparatus for increasing performance of communication paths for communication nodes
US10141961B1 (en) 2017-05-18 2018-11-27 Nanosemi, Inc. Passive intermodulation cancellation
US10931318B2 (en) 2017-06-09 2021-02-23 Nanosemi, Inc. Subsampled linearization system
US11115067B2 (en) 2017-06-09 2021-09-07 Nanosemi, Inc. Multi-band linearization system
US11323188B2 (en) 2017-07-12 2022-05-03 Nanosemi, Inc. Monitoring systems and methods for radios implemented with digital predistortion
CN107395294A (zh) * 2017-07-12 2017-11-24 电子科技大学 一种发射机射频非理想特性矫正方法
CN107359864B (zh) * 2017-07-25 2020-08-21 中国工程物理研究院电子工程研究所 频率捷变功率放大器的自适应捷变数字预失真方法
US10284313B2 (en) 2017-08-09 2019-05-07 Isco International, Llc Method and apparatus for monitoring, detecting, testing, diagnosing and/or mitigating interference in a communication system
US11803377B2 (en) 2017-09-08 2023-10-31 Oracle International Corporation Efficient direct convolution using SIMD instructions
US11303251B2 (en) 2017-10-02 2022-04-12 Nanosemi, Inc. Digital predistortion adjustment based on determination of load condition characteristics
US10949766B2 (en) * 2017-10-15 2021-03-16 Gsi Technology Inc. Precise exponent and exact softmax computation
EP3704798B1 (en) * 2017-11-02 2023-07-26 B.G. Negev Technologies and Applications Ltd., at Ben-Gurion University Digital resolution enhancement for high speed digital-to-analog converters
TW201924294A (zh) * 2017-11-16 2019-06-16 財團法人資訊工業策進會 基於正交分頻多工的基頻處理裝置與基頻處理方法
KR102402248B1 (ko) * 2018-04-26 2022-05-26 엘지전자 주식회사 전력 제어를 수행하는 전자 기기
US10644657B1 (en) 2018-05-11 2020-05-05 Nanosemi, Inc. Multi-band digital compensator for a non-linear system
US10432240B1 (en) 2018-05-22 2019-10-01 Micron Technology, Inc. Wireless devices and systems including examples of compensating power amplifier noise
US11863210B2 (en) 2018-05-25 2024-01-02 Nanosemi, Inc. Linearization with level tracking
US10931238B2 (en) 2018-05-25 2021-02-23 Nanosemi, Inc. Linearization with envelope tracking or average power tracking
CN112640299A (zh) 2018-05-25 2021-04-09 纳诺塞米有限公司 变化操作条件下的数字预失真
US10594530B2 (en) * 2018-05-29 2020-03-17 Qualcomm Incorporated Techniques for successive peak reduction crest factor reduction
CN108733349B (zh) * 2018-07-27 2023-05-05 珠海一微半导体股份有限公司 一种基于定点数的三角函数运算电路
KR102040120B1 (ko) * 2018-07-27 2019-11-05 주식회사 크립토랩 근사 암호화된 암호문에 대한 연산을 수행하는 장치 및 방법
US10623222B2 (en) * 2018-08-30 2020-04-14 Xilinx, Inc. Vectorized peak detection for signal processing
US10819540B2 (en) * 2018-09-11 2020-10-27 Hughes Network Systems, Llc Radio frequency impairments compensator for broadband quadrature-conversion architectures
CN111260536B (zh) * 2018-12-03 2022-03-08 中国科学院沈阳自动化研究所 可变参数的数字图像多尺度卷积处理器及其实现方法
WO2020113946A1 (en) * 2018-12-07 2020-06-11 Huawei Technologies Co., Ltd. I/q imbalance compensation
KR20200082617A (ko) 2018-12-31 2020-07-08 삼성전자주식회사 메모리 장치를 이용한 계산 방법 및 이를 수행하는 메모리 장치
US10985951B2 (en) 2019-03-15 2021-04-20 The Research Foundation for the State University Integrating Volterra series model and deep neural networks to equalize nonlinear power amplifiers
US11327754B2 (en) * 2019-03-27 2022-05-10 Intel Corporation Method and apparatus for approximation using polynomials
US10763905B1 (en) 2019-06-07 2020-09-01 Micron Technology, Inc. Wireless devices and systems including examples of mismatch correction scheme
KR20210012235A (ko) * 2019-07-24 2021-02-03 삼성전자주식회사 전자 장치 및 전자 장치의 무선 통신 시스템
EP3772837A1 (en) * 2019-08-05 2021-02-10 Rohde & Schwarz GmbH & Co. KG Transmitter module, data transmission system and data transmission method
EP4052371A4 (en) * 2019-10-29 2023-08-09 Telefonaktiebolaget Lm Ericsson (Publ) RECURSIVE LINEARIZATION OF A NONLINEAR MODEL FOR AN ELECTRONIC DEVICE
FR3104859B1 (fr) * 2019-12-12 2021-11-19 Thales Sa Procede de decouplage de signaux dans des systemes d’emission/reception
US11012273B1 (en) 2019-12-31 2021-05-18 Hughes Network Systems, Llc Compensating for frequency-dependent I-Q phase imbalance
US10972139B1 (en) 2020-04-15 2021-04-06 Micron Technology, Inc. Wireless devices and systems including examples of compensating power amplifier noise with neural networks or recurrent neural networks
US10992326B1 (en) 2020-05-19 2021-04-27 Nanosemi, Inc. Buffer management for adaptive digital predistortion
CN111814107B (zh) * 2020-07-10 2021-03-12 上海擎昆信息科技有限公司 一种高精度实现平方根倒数的计算系统及其计算方法
US11496341B2 (en) 2020-08-13 2022-11-08 Micron Technology, Inc. Wireless devices and systems including examples of compensating I/Q imbalance with neural networks or recurrent neural networks
CN113517865B (zh) * 2021-04-20 2022-11-22 重庆邮电大学 一种基于记忆多项式的功放模型及其硬件实现方法
KR20230000189A (ko) * 2021-06-24 2023-01-02 주식회사 쏠리드 통신 장치 및 그 cfr 처리 방법
US20220413853A1 (en) * 2021-06-25 2022-12-29 Intel Corporation Apparatuses, methods, and systems for a packed data convolution instruction with shift control and width control
CN115022400B (zh) * 2021-06-28 2023-12-01 南京巅峰数据服务有限公司 一种软件数字前端信号处理系统
CN115603815A (zh) * 2021-07-07 2023-01-13 富士通株式会社（Jp） 失真器系数更新装置、方法和数字预失真装置
US11770284B1 (en) 2022-05-23 2023-09-26 Meta Platforms, Inc. Per carrier scaling of a cancellation pulse of a multi-carrier signal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996011445A1 (en) * 1994-10-05 1996-04-18 Winnov Bit sliced table lookup digital convolution
US6163788A (en) * 1998-06-25 2000-12-19 Industrial Technology Research Institute Programmable finite impulse response processor with scalable dynamic data range
US7895252B2 (en) * 2001-11-30 2011-02-22 Apple Inc. Single-channel convolution in a vector processing computer system

Family Cites Families (214)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3506918A (en) * 1966-12-27 1970-04-14 Xerox Corp Data channel equalization detector
US3946214A (en) * 1972-07-05 1976-03-23 Rixon, Incorporated Multi-level digital filter
NL8304210A (nl) 1983-12-07 1985-07-01 Hollandse Signaalapparaten Bv Digitaal impulscompressiefilter.
NL8402318A (nl) * 1984-07-23 1986-02-17 Philips Nv Inrichting voor het genereren van een hoekgemoduleerd draaggolfsignaal van constante amplitude in responsie op datasignalen.
EP0365226A3 (en) * 1988-10-17 1991-02-20 Raytheon Company Cordic apparatus and method for approximating the magnitude and phase of a complex number
US5031195A (en) * 1989-06-05 1991-07-09 International Business Machines Corporation Fully adaptive modem receiver using whitening matched filtering
SE467087B (sv) 1989-06-05 1992-05-25 Hoernell Elektrooptik Ab Svetshjaelm foersedd med ett s k snabbfilter
JPH04249429A (ja) * 1991-02-06 1992-09-04 Fujitsu Ltd ディジタルデータ伝送装置
JP3053921B2 (ja) * 1991-09-11 2000-06-19 株式会社東芝 宇宙航行体の運動制御装置
JP3042182B2 (ja) * 1992-05-29 2000-05-15 日本電気株式会社 再生データ検出方式
US5276633A (en) * 1992-08-14 1994-01-04 Harris Corporation Sine/cosine generator and method
US5550683A (en) * 1992-12-11 1996-08-27 Eastman Kodak Company Magnetic recording channel employing a non-ideal d.c.-free equalizer and a d.c.-free modulation code
WO1994019892A1 (en) * 1993-02-17 1994-09-01 Motorola Inc. Multiple-modulation communication system
US5416845A (en) * 1993-04-27 1995-05-16 Noise Cancellation Technologies, Inc. Single and multiple channel block adaptive methods and apparatus for active sound and vibration control
US5381357A (en) * 1993-05-28 1995-01-10 Grumman Corporation Complex adaptive fir filter
US5442353A (en) * 1993-10-25 1995-08-15 Motorola, Inc. Bandpass sigma-delta analog-to-digital converter (ADC), method therefor, and receiver using same
US5563864A (en) * 1993-12-24 1996-10-08 Seiko Epson Corporation Information recording and reproducing apparatus
US5450083A (en) * 1994-03-09 1995-09-12 Analog Devices, Inc. Two-stage decimation filter
SE502868C2 (sv) 1994-04-26 1996-02-05 Hoernell Elektrooptik Ab Svetssnabbfilter med förbättrade vinkelegenskaper
US5646950A (en) * 1994-11-18 1997-07-08 Seagate Technology, Inc. Matched spectral null codes for partial response channels
US5706314A (en) * 1995-01-04 1998-01-06 Hughes Electronics Joint maximum likelihood channel and timing error estimation
US5953241A (en) * 1995-08-16 1999-09-14 Microunity Engeering Systems, Inc. Multiplier array processing system with enhanced utilization at lower precision for group multiply and sum instruction
US7483935B2 (en) * 1995-08-16 2009-01-27 Microunity Systems Engineering, Inc. System and method to implement a matrix multiply unit of a broadband processor
SE509569C2 (sv) 1995-10-26 1999-02-08 Hoernell International Ab Vätskekristallslutarkonstruktion
US5864689A (en) 1995-12-05 1999-01-26 Advanced Micro Devices, Inc. Microprocessor configured to selectively invoke a microcode DSP function or a program subroutine in response to a target address value of branch instruction
JPH09245435A (ja) * 1996-03-05 1997-09-19 Sony Corp データ再生装置
US7046694B2 (en) * 1996-06-19 2006-05-16 Digital Radio Express, Inc. In-band on-channel digital broadcasting method and system
US6275543B1 (en) * 1996-10-11 2001-08-14 Arraycomm, Inc. Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing
US5893066A (en) * 1996-10-15 1999-04-06 Samsung Electronics Co. Ltd. Fast requantization apparatus and method for MPEG audio decoding
JP3790307B2 (ja) * 1996-10-16 2006-06-28 株式会社ルネサステクノロジ データプロセッサ及びデータ処理システム
US5966416A (en) 1996-11-21 1999-10-12 Dsp Group, Inc. Verification of PN synchronization in a spread-spectrum communications receiver
FR2758926B1 (fr) * 1997-01-24 1999-04-30 France Telecom Procede d'egalisation multicapteurs dans un recepteur radioelectrique comportant un nombre determine de voies de reception et recepteur correspondant
US5926406A (en) 1997-04-30 1999-07-20 Hewlett-Packard, Co. System and method for calculating floating point exponential values in a geometry accelerator
DE69723477T2 (de) * 1997-05-15 2004-05-27 International Business Machines Corp. Anordnung und verfahren zur rauschvorhersagenden maximal-wahrscheinlichkeitsdetektion
US5949831A (en) * 1997-05-21 1999-09-07 International Business Machines Corporation Method and apparatus for data detection for PRML data channels
US5990894A (en) 1997-06-16 1999-11-23 Sun Microsystems, Inc. Method for implementing the power function DP and computer graphics system employing the same
US6151682A (en) * 1997-09-08 2000-11-21 Sarnoff Corporation Digital signal processing circuitry having integrated timing information
US6446193B1 (en) * 1997-09-08 2002-09-03 Agere Systems Guardian Corp. Method and apparatus for single cycle processing of data associated with separate accumulators in a dual multiply-accumulate architecture
JP3369448B2 (ja) 1997-09-29 2003-01-20 シャープ株式会社 ディジタルスイッチングアンプ
JP3884172B2 (ja) * 1997-10-02 2007-02-21 株式会社東芝 可変長復号化装置および復号化方法
US5864703A (en) * 1997-10-09 1999-01-26 Mips Technologies, Inc. Method for providing extended precision in SIMD vector arithmetic operations
US20010040930A1 (en) * 1997-12-19 2001-11-15 Duane L. Abbey Multi-band direct sampling receiver
US6128638A (en) 1998-07-23 2000-10-03 Silicon Graphics, Inc. Method and apparatus for calculating X to the Exponent of Y
JP3514978B2 (ja) * 1998-07-31 2004-04-05 シャープ株式会社 ディジタルスイッチングアンプ
US6150976A (en) 1998-08-12 2000-11-21 Aai Corporation Synthesis of overlapping chirp waveforms
US6158027A (en) * 1998-08-31 2000-12-05 International Business Machines Corporation Enhanced noise-predictive maximum likelihood (NPML) data detection method and apparatus for direct access storage device (DASD)
US6137643A (en) * 1998-10-06 2000-10-24 International Business Machines Corporation Thermal asperity detection with long magnet rejection for direct access storage device (DASD)
GB9823145D0 (en) * 1998-10-23 1998-12-16 Philips Electronics Nv Radio communication system
DE19850642C2 (de) * 1998-11-03 2003-08-07 Infineon Technologies Ag Verfahren zur Reduzierung des Crest-Faktors eines Signals
US6477200B1 (en) * 1998-11-09 2002-11-05 Broadcom Corporation Multi-pair gigabit ethernet transceiver
JP4057729B2 (ja) 1998-12-29 2008-03-05 株式会社日立製作所 フーリエ変換方法およびプログラム記録媒体
JP3699602B2 (ja) * 1999-01-07 2005-09-28 富士通株式会社 プリディストーション装置及びその方法
GB2348755B (en) * 1999-04-01 2001-03-07 Wireless Systems Int Ltd Signal processing
US6597745B1 (en) * 1999-04-06 2003-07-22 Eric M. Dowling Reduced complexity multicarrier precoder
WO2000065791A1 (en) * 1999-04-22 2000-11-02 Broadcom Corporation Gigabit ethernet with timing offsets between the twisted pairs
US6643814B1 (en) * 1999-07-12 2003-11-04 International Business Machines Corporation Maximum transition run encoding and decoding systems
US6356146B1 (en) * 1999-07-13 2002-03-12 Pmc-Sierra, Inc. Amplifier measurement and modeling processes for use in generating predistortion parameters
US6798843B1 (en) * 1999-07-13 2004-09-28 Pmc-Sierra, Inc. Wideband digital predistortion linearizer for nonlinear amplifiers
US6529992B1 (en) 1999-07-26 2003-03-04 Iomega Corporation Self-contained application disk for automatically launching application software or starting devices and peripherals
JP4239314B2 (ja) * 1999-09-06 2009-03-18 ソニー株式会社 符号化装置および方法、復号装置および方法、および記録媒体
US6580768B1 (en) * 1999-11-09 2003-06-17 International Business Machines Corporation Adaptive maximum likelihood detection
US6844880B1 (en) 1999-12-06 2005-01-18 Nvidia Corporation System, method and computer program product for an improved programmable vertex processing model with instruction set
US7200180B2 (en) * 1999-12-30 2007-04-03 Tioga Technologies, Inc. Data transceiver with filtering and precoding
CA2293953A1 (en) 2000-01-05 2001-07-05 Ipros Corporation A method and system for implementing a coprocessor
US6690739B1 (en) * 2000-01-14 2004-02-10 Shou Yee Mui Method for intersymbol interference compensation
US6973138B1 (en) * 2000-01-26 2005-12-06 Pmc-Sierra, Inc. Advanced adaptive pre-distortion in a radio frequency transmitter
JP2001244848A (ja) * 2000-02-28 2001-09-07 Kawasaki Steel Corp スペクトラム拡散通信受信装置
FI20000820A (fi) * 2000-04-06 2001-10-07 Nokia Networks Oy Kanavakorjaimen optimointi
US6741662B1 (en) 2000-04-17 2004-05-25 Intel Corporation Transmitter linearization using fast predistortion
US7584234B2 (en) 2002-05-23 2009-09-01 Qsigma, Inc. Method and apparatus for narrow to very wide instruction generation for arithmetic circuitry
US7284027B2 (en) 2000-05-15 2007-10-16 Qsigma, Inc. Method and apparatus for high speed calculation of non-linear functions and networks using non-linear function calculations for digital signal processing
US7617268B2 (en) 2000-05-15 2009-11-10 Qsigma, Inc. Method and apparatus supporting non-additive calculations in graphics accelerators and digital signal processors
US7061991B2 (en) * 2000-07-21 2006-06-13 Pmc - Sierra Inc. Systems and methods for the reduction of peak to average signal levels of multi-bearer single-carrier and multi-carrier waveforms
KR100819623B1 (ko) * 2000-08-09 2008-04-04 소니 가부시끼 가이샤 음성 데이터의 처리 장치 및 처리 방법
JP3634250B2 (ja) * 2000-08-23 2005-03-30 日本電信電話株式会社 ソフトウェア無線装置
DE10044227A1 (de) * 2000-09-07 2002-04-04 Nanotron Ges Fuer Mikrotechnik Verfahren zum Codieren und Decodieren eines Informationssymbols
FI113514B (fi) * 2000-11-15 2004-04-30 Elektrobit Oy Menetelmä radiokanavan simuloimiseksi ja kanavasimulaattori
US7082220B2 (en) * 2001-01-25 2006-07-25 Sony Corporation Data processing apparatus
US7752419B1 (en) 2001-03-22 2010-07-06 Qst Holdings, Llc Method and system for managing hardware resources to implement system functions using an adaptive computing architecture
SE0101175D0 (sv) * 2001-04-02 2001-04-02 Coding Technologies Sweden Ab Aliasing reduction using complex-exponential-modulated filterbanks
ES2323856T3 (es) 2001-06-29 2009-07-27 Nokia Corporation Desequilibrio de la fase iq.
GB2377596B (en) 2001-07-11 2004-09-01 Cambridge Broadband Ltd Communications protocol
US6976043B2 (en) * 2001-07-30 2005-12-13 Ati Technologies Inc. Technique for approximating functions based on lagrange polynomials
US7158567B2 (en) * 2001-09-11 2007-01-02 Vitesse Semiconductor Corporation Method and apparatus for improved high-speed FEC adaptive equalization
JP4016207B2 (ja) * 2001-10-03 2007-12-05 ソニー株式会社 符号化方法および復号方法
US6961395B2 (en) * 2001-11-16 2005-11-01 Nortel Networks Limited Time variant filter implementation
US7167513B2 (en) 2001-12-31 2007-01-23 Intel Corporation IQ imbalance correction
JP4118584B2 (ja) * 2002-04-02 2008-07-16 三菱電機株式会社 マルチキャリア送信装置
US6801086B1 (en) * 2002-04-03 2004-10-05 Andrew Corporation Adaptive digital pre-distortion using amplifier model that incorporates frequency-dependent non-linearities
EP1414036A4 (en) * 2002-05-28 2008-01-16 Sony Corp SIGNAL PROCESSING APPARATUS AND METHOD, AND REPRODUCTION DEVICE FOR DIGITAL DATA
US20030231726A1 (en) * 2002-06-12 2003-12-18 Andreas Schuchert Arrangement and method for frequency domain compensation of OFDM signals with IQ imbalance
US7212584B2 (en) * 2002-08-05 2007-05-01 Hitachi Kokusai Electric Inc. Distortion compensator
US7697591B2 (en) * 2002-08-26 2010-04-13 Texas Instruments Incorporated Crest factor reduction processor for wireless communications
JP4091047B2 (ja) * 2002-10-31 2008-05-28 深▲川▼市中▲興▼通▲訊▼股▲分▼有限公司 広帯域プリディストーション線形化の方法およびシステム
TW571754U (en) 2002-12-20 2004-01-11 Taroko Internat Co Ltd Protective mask with side window
US20040160860A1 (en) * 2003-02-18 2004-08-19 Hongwei Song Magneto-optical recording/reproducing method and apparatus
JP3837742B2 (ja) * 2003-02-21 2006-10-25 ソニー株式会社 復号装置および復号方法、記録再生装置、プログラム格納媒体、並びに、プログラム
JP3769753B2 (ja) * 2003-03-24 2006-04-26 ソニー株式会社 符号化装置および符号化方法、記録媒体、並びにプログラム
US6987953B2 (en) * 2003-03-31 2006-01-17 Nortel Networks Limited Digital transmitter and method
JP4134797B2 (ja) * 2003-04-14 2008-08-20 株式会社デンソー ノッキング検出装置
US7110477B2 (en) * 2003-04-29 2006-09-19 Texas Instruments Incorporated Gaussian frequency shift keying digital demodulator
US7388904B2 (en) * 2003-06-03 2008-06-17 Vativ Technologies, Inc. Near-end, far-end and echo cancellers in a multi-channel transceiver system
US7133644B2 (en) * 2003-06-06 2006-11-07 Interdigital Technology Corporation Digital baseband system and process for compensating for analog radio transmitter impairments
CN100444525C (zh) * 2003-06-06 2008-12-17 美商内数位科技公司 补偿模拟无线传送器损害的数字基带系统
US6975167B2 (en) 2003-07-03 2005-12-13 Icefyre Semiconductor Corporation Adaptive predistortion for a transmit system with gain, phase and delay adjustments
JP4356384B2 (ja) 2003-07-09 2009-11-04 日本電気株式会社 非線形補償回路と送信装置並びに非線形補償方法
JP4638695B2 (ja) * 2003-07-31 2011-02-23 パナソニック株式会社 信号処理装置及びその方法
US20050036575A1 (en) * 2003-08-15 2005-02-17 Nokia Corporation Method and apparatus providing low complexity equalization and interference suppression for SAIC GSM/EDGE receiver
TW595111B (en) * 2003-09-03 2004-06-21 Mediatek Inc Fast data recovery digital data slicer
US7461116B2 (en) 2003-09-17 2008-12-02 Agility Design Solutions Inc. Emulation of a fixed point operation using a corresponding floating point operation
JP4396233B2 (ja) * 2003-11-13 2010-01-13 パナソニック株式会社 複素指数変調フィルタバンクの信号分析方法、信号合成方法、そのプログラム及びその記録媒体
US6864818B1 (en) * 2003-12-09 2005-03-08 Texas Instruments Incorporated Programmable bandpass analog to digital converter based on error feedback architecture
KR20050064485A (ko) * 2003-12-23 2005-06-29 삼성전자주식회사 전력 증폭기의 비선형 왜곡 특성을 보상하는 전치보상장치 및 방법
US7656931B2 (en) * 2003-12-31 2010-02-02 Ut-Battelle, Llc Hybrid spread spectrum radio system
US7441105B1 (en) * 2004-01-02 2008-10-21 Altera Corporation Reducing multiplexer circuitry for operand select logic associated with a processor
US6998910B2 (en) * 2004-01-22 2006-02-14 Texas Instruments Incorporated Amplifier using delta-sigma modulation
US20080253011A1 (en) * 2004-01-23 2008-10-16 Matusuhita Electric Industrial Co., Ltd. Signal Processing Device and Signal Processing Method
US6933865B1 (en) * 2004-01-29 2005-08-23 Seagate Technology Llc Method and apparatus for coded symbol stuffing in recording systems
US20050177605A1 (en) 2004-02-10 2005-08-11 Intel Corporation Computation of logarithmic and exponential functions
DE602004011577T2 (de) * 2004-02-19 2009-01-29 Thomson Licensing Verfahren und vorrichtung zur trägerrückgewinnung in einem kommunikationssystem
US7376689B2 (en) * 2004-03-12 2008-05-20 Infineon Technologies Ag Method and apparatus for reducing the crest factor of a signal
ITMI20040600A1 (it) * 2004-03-26 2004-06-26 Atmel Corp Sistema dsp su chip a doppio processore a virgola mobile nel dominio complesso
US20050281361A1 (en) * 2004-06-16 2005-12-22 Broadcom Corporation Interference cancellation of STBC with multiple streams in OFDM for wlan
KR20060012825A (ko) * 2004-08-04 2006-02-09 삼성전자주식회사 다중입출력 시스템의 수신기
US20060039498A1 (en) * 2004-08-19 2006-02-23 De Figueiredo Rui J P Pre-distorter for orthogonal frequency division multiplexing systems and method of operating the same
US7715656B2 (en) 2004-09-28 2010-05-11 Qualcomm Incorporated Magnification and pinching of two-dimensional images
US7606322B2 (en) * 2004-10-07 2009-10-20 Microelectronics Technology Inc. Digital pre-distortion technique using nonlinear filters
JP4823013B2 (ja) * 2006-10-18 2011-11-24 株式会社日立製作所 ピークファクタ低減装置およびベースバンド信号処理装置
US7801248B2 (en) 2004-11-19 2010-09-21 Qualcomm Incorporated Interference suppression with virtual antennas
US7486738B2 (en) * 2005-02-10 2009-02-03 Samsung Electronics Co., Ltd. Apparatus and method for reducing the crest factor of single carrier or multi-carrier signals
US7477634B1 (en) * 2005-02-10 2009-01-13 Advanced Receiver Technologies, Llc Method and apparatus for a chip-level no-decision feedback equalizer for CDMA wireless systems
US8135088B2 (en) * 2005-03-07 2012-03-13 Q1UALCOMM Incorporated Pilot transmission and channel estimation for a communication system utilizing frequency division multiplexing
US7477330B2 (en) 2005-03-09 2009-01-13 3M Innovative Properties Company Automatic darkening filter with offset polarizers
JP2006279780A (ja) 2005-03-30 2006-10-12 Matsushita Electric Ind Co Ltd 歪み補償装置及び歪み補償方法
US7313373B1 (en) * 2005-04-21 2007-12-25 Xilinx, Inc. Crest factor reduction for use in a multiband transmitter
US7302192B2 (en) * 2005-04-28 2007-11-27 Menara Networks Methods of spread-pulse modulation and nonlinear time domain equalization for fiber optic communication channels
US7415595B2 (en) * 2005-05-24 2008-08-19 Coresonic Ab Data processing without processor core intervention by chain of accelerators selectively coupled by programmable interconnect network and to memory
US7321325B2 (en) * 2005-07-07 2008-01-22 Realtek Semiconductor Corp. Background calibration of continuous-time delta-sigma modulator
US7978799B2 (en) 2005-07-15 2011-07-12 Nec Corporation Adaptive digital filter, FM receiver, signal processing method, and program
CN100502378C (zh) * 2005-07-15 2009-06-17 北京大学深圳研究生院 正交频分复用系统中抑制峰平比的电路和方法
US7613228B2 (en) * 2005-08-10 2009-11-03 Bae Systems Information And Electronic Systems Integration Inc. M-Algorithm multiuser detector with correlation based pruning
US20070060155A1 (en) 2005-08-31 2007-03-15 Emanuel Kahana System and method to dynamically adapt a CCA threshold
US7652532B2 (en) * 2005-09-06 2010-01-26 The Regents Of The University Of California Correlation method for monitoring power amplifier
US7539717B2 (en) * 2005-09-09 2009-05-26 Via Technologies, Inc. Logarithm processing systems and methods
US20070087770A1 (en) * 2005-10-14 2007-04-19 Hong Gan Methods and apparatuses for transmission power control in a wireless communication system
US7746970B2 (en) * 2005-11-15 2010-06-29 Qualcomm Incorporated Method and apparatus for filtering noisy estimates to reduce estimation errors
US7634527B2 (en) 2005-11-17 2009-12-15 International Business Machines Corporation Reciprocal estimate computation methods and apparatus
US7583583B2 (en) 2005-12-15 2009-09-01 Nortel Networks Limited System and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing signals using reserved spectrum
US7602838B2 (en) * 2005-12-22 2009-10-13 Telefonaktiebolaget Lm Ericsson (Publ) Linear turbo equalization using despread values
US7619546B2 (en) * 2006-01-18 2009-11-17 Dolby Laboratories Licensing Corporation Asynchronous sample rate conversion using a digital simulation of an analog filter
US7564912B2 (en) * 2006-02-15 2009-07-21 Mediatek Inc. Method and apparatus for channel state information generation in a DVB-T receiver
CN101411155A (zh) * 2006-03-28 2009-04-15 Nxp股份有限公司 具有延迟失配补偿的发射机
CN1984110B (zh) * 2006-04-24 2011-04-20 华为技术有限公司 降低峰均比的方法和具有低峰均比的正交频分复用系统
US7783260B2 (en) * 2006-04-27 2010-08-24 Crestcom, Inc. Method and apparatus for adaptively controlling signals
US20070286122A1 (en) 2006-06-12 2007-12-13 Motorola, Inc. Clear channel assessment threshold adaptation in a wireless network
CN100594491C (zh) * 2006-07-14 2010-03-17 中国电子科技集团公司第三十八研究所 可重构数字信号处理器
US20080056403A1 (en) * 2006-09-01 2008-03-06 On Demand Microelectronics Method and apparatus for timing recovery of pam signals
US7593492B1 (en) * 2006-09-15 2009-09-22 Bae Systems Information And Electronic Systems Integration Inc. Combinational hybrid turbo-MUD
US7443337B2 (en) 2006-09-25 2008-10-28 Aai Corporation Synthesizing arbitrary waveforms using convolution processors
KR20090080541A (ko) 2006-11-06 2009-07-24 노키아 코포레이션 자기간섭 제거를 위한 아날로그 신호 경로 모델링
US7995975B2 (en) * 2006-12-21 2011-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for signal peak-to-average ratio reduction
US7504976B1 (en) * 2007-01-31 2009-03-17 Lockheed Martin Corporation Direct radio frequency generation using power digital-to-analog conversion
US7864875B2 (en) 2007-02-02 2011-01-04 Research In Motion Limited Apparatus, and associated method, for communicating a data block in a multi carrier modulation communication scheme together with an identification sequence superimposed thereon
GB0702627D0 (en) 2007-02-09 2007-03-21 Texas Instruments Ltd Transmitter including pre-distortion
US7839951B2 (en) * 2007-04-05 2010-11-23 Microelectronics Technology Inc. Dynamic crest factor reduction system
CA2681362C (en) * 2007-04-25 2014-02-04 Telekom Malaysia Berhad Transceiver front end for software radio systems
US7538704B2 (en) 2007-06-19 2009-05-26 Telefonaktiebolaget Lm Ericsson (Publ) Direct RF D-to-A conversion
FR2918236A1 (fr) * 2007-06-26 2009-01-02 France Telecom Procede et dispositif de generation numerique de frequence.
US8270457B2 (en) * 2007-06-27 2012-09-18 Qualcomm Atheros, Inc. High sensitivity GPS receiver
WO2009004862A1 (ja) * 2007-06-29 2009-01-08 Nec Corporation 送信信号生成装置、方法、およびプログラム
US8369809B2 (en) * 2007-07-27 2013-02-05 Netlogic Microsystems, Inc. Crest factor reduction
US7912883B2 (en) 2007-08-02 2011-03-22 Via Technologies, Inc. Exponent processing systems and methods
JP5010399B2 (ja) * 2007-08-29 2012-08-29 株式会社日立国際電気 直交多重信号のピーク抑圧方法、ピーク抑圧回路、及び送信装置
DE102007053828B4 (de) * 2007-11-12 2009-06-18 Infineon Technologies Ag Übertragung kodierter Daten
US7825724B2 (en) * 2007-12-18 2010-11-02 Motorola Mobility, Inc. Method and apparatus for direct digital to radio frequency conversion
TWI345876B (en) * 2007-12-19 2011-07-21 Sunplus Mmobile Inc Method for calculating coefficients of filter and method for filtering
AU2009215558B2 (en) * 2008-02-19 2014-03-06 Elbit Systems Of America, Llc MIMO Slotted Aloha (MSA) system
US8345793B2 (en) * 2008-03-10 2013-01-01 Telefonaktiebolaget Lm Ericsson (Publ) Compensation of diagonal ISI in OFDM signals
US8229009B2 (en) 2008-04-01 2012-07-24 Harris Corporation System and method for communicating data using efficient fast fourier transform (FFT) for orthogonal frequency division multiplexing (OFDM) modulation
US7990185B2 (en) * 2008-05-12 2011-08-02 Menara Networks Analog finite impulse response filter
WO2010042885A1 (en) * 2008-10-10 2010-04-15 Powerwave Technologies, Inc. Crest factor reduction for ofdm communications systems by transmitting phase shifted resource blocks
US8030997B2 (en) * 2008-11-11 2011-10-04 Philip Brown Resource efficient adaptive digital pre-distortion system
US8260279B2 (en) * 2008-11-15 2012-09-04 Board Of Regents, The University Of Texas System System, method and apparatus for providing communications that conform to a cellular communication standard and a non-cellular communication standard
US9176735B2 (en) * 2008-11-28 2015-11-03 Intel Corporation Digital signal processor having instruction set with one or more non-linear complex functions
US8300749B2 (en) * 2008-12-19 2012-10-30 Alcatel Lucent Method, apparatus and system for frequency synchronization between devices communicating over a packet network
US9207910B2 (en) * 2009-01-30 2015-12-08 Intel Corporation Digital signal processor having instruction set with an xK function using reduced look-up table
US9128790B2 (en) * 2009-01-30 2015-09-08 Intel Corporation Digital signal processor having instruction set with an exponential function using reduced look-up table
TWI597939B (zh) * 2009-02-18 2017-09-01 杜比國際公司 具相位偏移之複數值合成濾波器組
US8351542B2 (en) * 2009-03-30 2013-01-08 Texas Instruments Incorporated Method and system for crest factor reduction
CN102379088B (zh) 2009-03-31 2015-04-29 艾格瑞系统有限责任公司 通过使用△-∑调制器直接合成rf信号的方法和装置
US8300739B2 (en) * 2009-04-21 2012-10-30 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for generating soft bit values in reduced-state equalizers
ATE539491T1 (de) * 2009-05-28 2012-01-15 Univ Duisburg Essen Digitaler empfänger, digitaler sender, verfahren zur bedienung eines digitalen empfängers oder eines digitalen senders und computerprogramm
EP2440356A4 (en) * 2009-06-09 2017-05-24 Lean Tool Systems, LLC Gauge system for workpiece processing
TWI392296B (zh) * 2009-06-15 2013-04-01 Realtek Semiconductor Corp 通訊信號接收器及其訊號處理方法
US8611406B2 (en) * 2009-06-30 2013-12-17 Lsi Corporation System optimization using soft receiver masking technique
US8737636B2 (en) * 2009-07-10 2014-05-27 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation
DE102010038482B4 (de) * 2009-07-31 2014-07-24 Intel Mobile Communications GmbH Digitale Vorverzerrung und Kompensation einer Betriebsbedingungsauswirkung
US20110055445A1 (en) 2009-09-03 2011-03-03 Azuray Technologies, Inc. Digital Signal Processing Systems
US20110083058A1 (en) * 2009-10-01 2011-04-07 Stmicroelectronics, Inc. Trapping set based ldpc code design and related circuits, systems, and methods
GB2474901B (en) * 2009-10-30 2015-01-07 Advanced Risc Mach Ltd Apparatus and method for performing multiply-accumulate operations
WO2011058843A1 (ja) * 2009-11-10 2011-05-19 日本電気株式会社 増幅装置、歪み補償回路および歪み補償方法
US9276602B1 (en) * 2009-12-16 2016-03-01 Syntropy Systems, Llc Conversion of a discrete-time quantized signal into a continuous-time, continuously variable signal
KR101420898B1 (ko) * 2009-12-23 2014-07-16 한국전자통신연구원 다중 모드 광대역 무선통신 장치 및 방법
EP2362550B1 (en) * 2010-02-18 2012-08-29 Imec Digital front-end circuit and method for using the same
CN102195912B (zh) * 2010-03-16 2015-03-04 富士通株式会社 数字预失真处理设备和方法
US8212942B2 (en) * 2010-04-14 2012-07-03 Newport Media, Inc. All digital front-end architecture for television with sigma-delta ADC input
KR20120037134A (ko) * 2010-10-11 2012-04-19 삼성전자주식회사 이동통신 시스템의 하향링크 수신 장치 및 방법
US8599961B2 (en) * 2010-10-14 2013-12-03 KATREIN-Werke KG Crest factor reduction method and circuit for a multi-carrier signal
US8644428B2 (en) * 2010-10-29 2014-02-04 Texas Instruments Incorporated System and method for channel interpolation
US8630362B1 (en) * 2011-05-02 2014-01-14 Urbain A. von der Embse QLM co-state MAP trellis
US8949302B2 (en) * 2011-06-30 2015-02-03 Silicon Laboratories Inc. Digital front end for oversampled low-IF or zero-IF multimode receivers
US8917705B2 (en) 2011-09-29 2014-12-23 Qualcomm Incorporated Collision reduction mechanisms for wireless communication networks
US9280315B2 (en) 2011-10-27 2016-03-08 Intel Corporation Vector processor having instruction set with vector convolution function for fir filtering
EP3236698A1 (en) 2012-11-02 2017-10-25 Interdigital Patent Holdings, Inc. Power control methods and procedures for wireless local area networks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996011445A1 (en) * 1994-10-05 1996-04-18 Winnov Bit sliced table lookup digital convolution
US6163788A (en) * 1998-06-25 2000-12-19 Industrial Technology Research Institute Programmable finite impulse response processor with scalable dynamic data range
US7895252B2 (en) * 2001-11-30 2011-02-22 Apple Inc. Single-channel convolution in a vector processing computer system

Also Published As

Publication number Publication date
US8897388B2 (en) 2014-11-25
CN103999078A (zh) 2014-08-20
CN107276936B (zh) 2020-12-11
US20140086361A1 (en) 2014-03-27
US20130117342A1 (en) 2013-05-09
JP6662815B2 (ja) 2020-03-11
CN103975564A (zh) 2014-08-06
KR102001570B1 (ko) 2019-07-18
EP2758896A4 (en) 2015-07-01
WO2013066756A2 (en) 2013-05-10
EP2783492A4 (en) 2015-08-12
KR20140085556A (ko) 2014-07-07
US9280315B2 (en) 2016-03-08
KR102015680B1 (ko) 2019-08-28
US20130114761A1 (en) 2013-05-09
EP2758867A4 (en) 2015-07-08
JP2015504622A (ja) 2015-02-12
EP2772033A4 (en) 2015-07-22
KR20140084292A (ko) 2014-07-04
EP2783492B1 (en) 2020-05-27
KR20140084290A (ko) 2014-07-04
JP2014533017A (ja) 2014-12-08
JP2014532926A (ja) 2014-12-08
JP2014535214A (ja) 2014-12-25
US9529567B2 (en) 2016-12-27
US20140064417A1 (en) 2014-03-06
KR102207599B1 (ko) 2021-01-26
WO2013063447A3 (en) 2013-06-20
EP2772031A4 (en) 2015-07-29
US20140072073A1 (en) 2014-03-13
KR102063140B1 (ko) 2020-02-11
EP2772032A4 (en) 2015-07-01
US8982992B2 (en) 2015-03-17
US9372663B2 (en) 2016-06-21
EP2758867A2 (en) 2014-07-30
WO2013063447A2 (en) 2013-05-02
US20130114652A1 (en) 2013-05-09
JP6037318B2 (ja) 2016-12-07
CN103999416A (zh) 2014-08-20
CN109144570A (zh) 2019-01-04
KR20140092852A (ko) 2014-07-24
US20170293485A1 (en) 2017-10-12
WO2013063443A1 (en) 2013-05-02
CN107276936A (zh) 2017-10-20
US9612794B2 (en) 2017-04-04
US9201628B2 (en) 2015-12-01
CN103988473B (zh) 2017-06-06
EP2772033A2 (en) 2014-09-03
JP6010823B2 (ja) 2016-10-19
US20140086356A1 (en) 2014-03-27
US20160072647A1 (en) 2016-03-10
JP6526415B2 (ja) 2019-06-05
WO2013063450A1 (en) 2013-05-02
US9632750B2 (en) 2017-04-25
EP2783492A1 (en) 2014-10-01
CN103999039B (zh) 2018-08-10
KR20200031084A (ko) 2020-03-23
US20130114762A1 (en) 2013-05-09
US20160365950A1 (en) 2016-12-15
WO2013063440A1 (en) 2013-05-02
CN103999039A (zh) 2014-08-20
EP2772032A1 (en) 2014-09-03
KR20140084294A (ko) 2014-07-04
EP2772031A1 (en) 2014-09-03
US9778902B2 (en) 2017-10-03
US20140108477A1 (en) 2014-04-17
US9292255B2 (en) 2016-03-22
US8831133B2 (en) 2014-09-09
CN103988473A (zh) 2014-08-13
JP2015504261A (ja) 2015-02-05
US20140075162A1 (en) 2014-03-13
CN103999417A (zh) 2014-08-20
US20140086367A1 (en) 2014-03-27
EP2758896A1 (en) 2014-07-30
JP2015502597A (ja) 2015-01-22
JP2017216720A (ja) 2017-12-07
KR20140084295A (ko) 2014-07-04
CN103999417B (zh) 2018-11-13
CN103999416B (zh) 2017-03-08
WO2013063434A1 (en) 2013-05-02
JP6189848B2 (ja) 2017-08-30
WO2013066756A3 (en) 2013-08-15
US10209987B2 (en) 2019-02-19
US9760338B2 (en) 2017-09-12

Similar Documents

Publication Publication Date Title
CN103999078B (zh) 具有包含用于fir滤波的矢量卷积函数的指令集的矢量处理器
US9363068B2 (en) Vector processor having instruction set with sliding window non-linear convolutional function
US8271571B2 (en) Microprocessor
US9092227B2 (en) Vector slot processor execution unit for high speed streaming inputs
US20070083585A1 (en) Karatsuba based multiplier and method
Choo et al. Complexity reduction of digital filters using shift inclusive differential coefficients
US8909687B2 (en) Efficient FIR filters
JP5229314B2 (ja) Ｃｏｒｄｉｃ演算回路及び方法
Vinod et al. An efficient coefficient-partitioning algorithm for realizing low-complexity digital filters
Jameil et al. Efficient FIR Filter Architecture using FPGA
WO2004079585A1 (ja) 行列演算装置
US20140372728A1 (en) Vector execution unit for digital signal processor
US20150381147A1 (en) Configurable generic filter hardware block and methods
KR20170133787A (ko) 3으로 나누는 이진 연산 장치 및 방법
Ma et al. Reencoder design for soft-decision decoding of an (255,239) Reed-Solomon code
Kumar et al. Area efficient FIR filter using graph based algorithm
Gautam et al. Design of Higher Order FIR Filter for Different Techniques of Multiplication
Sivaramakrishnan et al. Implementation of digital lattice filter using Schur Polynomial
Pridhini et al. Design of Multiple Constant Multiplication algorithm for FIR filter
Khorbotly et al. Hardware friendly schemes to implement exponential linear phase fir filters
Sravanthi et al. Design of FIR Filter by using Sharing Multiplier with Low Delay
SWETHA et al. Implementation of Area Optimized Fixed Point Circuits using Retiming Techniques
SURESH et al. Design of Digit-Serial FIR Filters: Algorithms, Architectures, and a CAD Tool
WO2021008711A1 (en) Advanced finite impulse response system and method for real coefficients and complex data
SWETHA et al. A Novel Approach for Realization of Power Efficient LMS Adaptive Filter

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20161205

Address after: California, USA

Applicant after: INTEL Corp.

Address before: California, USA

Applicant before: LSI Corp.

C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170322

Termination date: 20191026