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piecewise-Polynomial

  • Bairstow Problem. We can find any n th polynomial problem.

    Bairstow Problem. We can find any n th polynomial problem.

    標(biāo)簽: polynomial Bairstow Problem problem

    上傳時(shí)間: 2013-12-20

    上傳用戶:363186

  • This project contains a C algorithm for calculating the results of a custom polynomial function. It

    This project contains a C algorithm for calculating the results of a custom polynomial function. It is designed and optimized especially for the Starcore 140 DSP ! Inside the archive you can also find the assembly code and the matlab test program which you can use to test the accuracy of the program.

    標(biāo)簽: calculating polynomial algorithm contains

    上傳時(shí)間: 2017-09-12

    上傳用戶:hoperingcong

  • a file for determining a polynomial degrees

    a file for determining a polynomial degrees

    標(biāo)簽: determining polynomial degrees file

    上傳時(shí)間: 2013-12-16

    上傳用戶:xuan‘nian

  • 軟件無線電中數(shù)字下變頻技術(shù)研究及FPGA實(shí)現(xiàn).rar

    軟件無線電(SDR,Software Defined Radio)由于具備傳統(tǒng)無線電技術(shù)無可比擬的優(yōu)越性,已成為業(yè)界公認(rèn)的現(xiàn)代無線電通信技術(shù)的發(fā)展方向。理想的軟件無線電系統(tǒng)強(qiáng)調(diào)體系結(jié)構(gòu)的開放性和可編程性,減少靈活性著的硬件電路,把數(shù)字化處理(ADC和DAC)盡可能靠近天線,通過軟件的更新改變硬件的配置、結(jié)構(gòu)和功能。目前,直接對(duì)射頻(RF)進(jìn)行采樣的技術(shù)尚未實(shí)現(xiàn)普及的產(chǎn)品化,而用數(shù)字變頻器在中頻進(jìn)行數(shù)字化是普遍采用的方法,其主要思想是,數(shù)字混頻器用離散化的單頻本振信號(hào)與輸入采樣信號(hào)在乘法器中相乘,再經(jīng)插值或抽取濾波,其結(jié)果是,輸入信號(hào)頻譜搬移到所需頻帶,數(shù)據(jù)速率也相應(yīng)改變,以供后續(xù)模塊做進(jìn)一步處理。數(shù)字變頻器在發(fā)射設(shè)備和接收設(shè)備中分別稱為數(shù)字上變頻器(DUC,Digital Upper Converter)和數(shù)字下變頻器(DDC,Digital Down Converter),它們是軟件無線電通信設(shè)備的關(guān)鍵部什。大規(guī)模可編程邏輯器件的應(yīng)用為現(xiàn)代通信系統(tǒng)的設(shè)計(jì)帶來極大的靈活性。基于FPGA的數(shù)字變頻器設(shè)計(jì)是深受廣大設(shè)計(jì)人員歡迎的設(shè)計(jì)手段。本文的重點(diǎn)研究是數(shù)字下變頻器(DDC),然而將它與數(shù)字上變頻器(DUC)完全割裂后進(jìn)行研究顯然是不妥的,因此,本文對(duì)數(shù)字上變頻器也作適當(dāng)介紹。 第一章簡(jiǎn)要闡述了軟件無線電及數(shù)字下變頻的基本概念,介紹了研究背景及所完成的主要研究工作。 第二章介紹了數(shù)控振蕩器(NCO),介紹了兩種實(shí)現(xiàn)方法,即基于查找表和基于CORDIC算法的實(shí)現(xiàn)。對(duì)CORDIc算法作了重點(diǎn)介紹,給出了傳統(tǒng)算法和改進(jìn)算法,并對(duì)基于傳統(tǒng)CORDIC算法的NCO的FPGA實(shí)現(xiàn)進(jìn)行了EDA仿真。 第三章介紹了變速率采樣技術(shù),重點(diǎn)介紹了軟件無線電中廣泛采用的級(jí)聯(lián)積分梳狀濾波器 (cascaded integratot comb, CIC)和ISOP(Interpolated Second Order Polynomial)補(bǔ)償法,對(duì)前者進(jìn)行了基于Matlab的理論仿真和FPGA實(shí)現(xiàn)的EDA仿真,后者只進(jìn)行了基于Matlab的理論仿真。 第四章介紹了分布式算法和軟件無線電中廣泛采用的半帶(half-band,HB)濾波器,對(duì)基于分布式算法的半帶濾波器的FPGA實(shí)現(xiàn)進(jìn)行了EDA仿真,最后簡(jiǎn)要介紹了FIR的多相結(jié)構(gòu)。 第五章對(duì)數(shù)字下變頻器系統(tǒng)進(jìn)行了噪聲綜合分析,給出了一個(gè)噪聲模型。 第六章介紹了數(shù)字下變頻器在短波電臺(tái)中頻數(shù)字化應(yīng)用中的一個(gè)實(shí)例,給出了測(cè)試結(jié)果,重點(diǎn)介紹了下變頻器的:FPGA實(shí)現(xiàn),其對(duì)應(yīng)的VHDL程序收錄在本文最后的附錄中,希望對(duì)從事該領(lǐng)域設(shè)計(jì)的技術(shù)人員具有一定參考價(jià)值。

    標(biāo)簽: FPGA 軟件無線電 數(shù)字下變頻

    上傳時(shí)間: 2013-06-30

    上傳用戶:huannan88

  • 軟件無線電中數(shù)字下變頻技術(shù)研究

    軟件無線電(SDR,Software Defined Radio)由于具備傳統(tǒng)無線電技術(shù)無可比擬的優(yōu)越性,已成為業(yè)界公認(rèn)的現(xiàn)代無線電通信技術(shù)的發(fā)展方向。理想的軟件無線電系統(tǒng)強(qiáng)調(diào)體系結(jié)構(gòu)的開放性和可編程性,減少靈活性著的硬件電路,把數(shù)字化處理(ADC和DAC)盡可能靠近天線,通過軟件的更新改變硬件的配置、結(jié)構(gòu)和功能。目前,直接對(duì)射頻(RF)進(jìn)行采樣的技術(shù)尚未實(shí)現(xiàn)普及的產(chǎn)品化,而用數(shù)字變頻器在中頻進(jìn)行數(shù)字化是普遍采用的方法,其主要思想是,數(shù)字混頻器用離散化的單頻本振信號(hào)與輸入采樣信號(hào)在乘法器中相乘,再經(jīng)插值或抽取濾波,其結(jié)果是,輸入信號(hào)頻譜搬移到所需頻帶,數(shù)據(jù)速率也相應(yīng)改變,以供后續(xù)模塊做進(jìn)一步處理。數(shù)字變頻器在發(fā)射設(shè)備和接收設(shè)備中分別稱為數(shù)字上變頻器(DUC,Digital Upper Converter)和數(shù)字下變頻器(DDC,Digital Down Converter),它們是軟件無線電通信設(shè)備的關(guān)鍵部什。大規(guī)模可編程邏輯器件的應(yīng)用為現(xiàn)代通信系統(tǒng)的設(shè)計(jì)帶來極大的靈活性。基于FPGA的數(shù)字變頻器設(shè)計(jì)是深受廣大設(shè)計(jì)人員歡迎的設(shè)計(jì)手段。本文的重點(diǎn)研究是數(shù)字下變頻器(DDC),然而將它與數(shù)字上變頻器(DUC)完全割裂后進(jìn)行研究顯然是不妥的,因此,本文對(duì)數(shù)字上變頻器也作適當(dāng)介紹。 第一章簡(jiǎn)要闡述了軟件無線電及數(shù)字下變頻的基本概念,介紹了研究背景及所完成的主要研究工作。 第二章介紹了數(shù)控振蕩器(NCO),介紹了兩種實(shí)現(xiàn)方法,即基于查找表和基于CORDIC算法的實(shí)現(xiàn)。對(duì)CORDIc算法作了重點(diǎn)介紹,給出了傳統(tǒng)算法和改進(jìn)算法,并對(duì)基于傳統(tǒng)CORDIC算法的NCO的FPGA實(shí)現(xiàn)進(jìn)行了EDA仿真。 第三章介紹了變速率采樣技術(shù),重點(diǎn)介紹了軟件無線電中廣泛采用的級(jí)聯(lián)積分梳狀濾波器 (cascaded integratot comb, CIC)和ISOP(Interpolated Second Order Polynomial)補(bǔ)償法,對(duì)前者進(jìn)行了基于Matlab的理論仿真和FPGA實(shí)現(xiàn)的EDA仿真,后者只進(jìn)行了基于Matlab的理論仿真。 第四章介紹了分布式算法和軟件無線電中廣泛采用的半帶(half-band,HB)濾波器,對(duì)基于分布式算法的半帶濾波器的FPGA實(shí)現(xiàn)進(jìn)行了EDA仿真,最后簡(jiǎn)要介紹了FIR的多相結(jié)構(gòu)。 第五章對(duì)數(shù)字下變頻器系統(tǒng)進(jìn)行了噪聲綜合分析,給出了一個(gè)噪聲模型。 第六章介紹了數(shù)字下變頻器在短波電臺(tái)中頻數(shù)字化應(yīng)用中的一個(gè)實(shí)例,給出了測(cè)試結(jié)果,重點(diǎn)介紹了下變頻器的:FPGA實(shí)現(xiàn),其對(duì)應(yīng)的VHDL程序收錄在本文最后的附錄中,希望對(duì)從事該領(lǐng)域設(shè)計(jì)的技術(shù)人員具有一定參考價(jià)值。

    標(biāo)簽: 軟件無線電 數(shù)字下變頻 技術(shù)研究

    上傳時(shí)間: 2013-06-09

    上傳用戶:szchen2006

  • 自適應(yīng)(Adaptive)神經(jīng)網(wǎng)絡(luò)源程序 The adaptive Neural Network Library is a collection of blocks that implement s

    自適應(yīng)(Adaptive)神經(jīng)網(wǎng)絡(luò)源程序 The adaptive Neural Network Library is a collection of blocks that implement several Adaptive Neural Networks featuring different adaptation algorithms.~..~ There are 11 blocks that implement basically these 5 kinds of neural networks: 1) Adaptive Linear Network (ADALINE) 2) Multilayer Layer Perceptron with Extended Backpropagation algorithm (EBPA) 3) Radial Basis Functions (RBF) Networks 4) RBF Networks with Extended Minimal Resource Allocating algorithm (EMRAN) 5) RBF and Piecewise Linear Networks with Dynamic Cell Structure (DCS) algorithm A simulink example regarding the approximation of a scalar nonlinear function of 4 variables

    標(biāo)簽: collection implement Adaptive adaptive

    上傳時(shí)間: 2015-04-09

    上傳用戶:ywqaxiwang

  • The adaptive Neural Network Library is a collection of blocks that implement several Adaptive Neural

    The adaptive Neural Network Library is a collection of blocks that implement several Adaptive Neural Networks featuring different adaptation algorithms.~..~ There are 11 blocks that implement basically these 5 kinds of neural networks: 1) Adaptive Linear Network (ADALINE) 2) Multilayer Layer Perceptron with Extended Backpropagation algorithm (EBPA) 3) Radial Basis Functions (RBF) Networks 4) RBF Networks with Extended Minimal Resource Allocating algorithm (EMRAN) 5) RBF and Piecewise Linear Networks with Dynamic Cell Structure (DCS) algorithm A simulink example regarding the approximation of a scalar nonlinear function of 4 variables is included

    標(biāo)簽: Neural collection implement Adaptive

    上傳時(shí)間: 2013-12-23

    上傳用戶:teddysha

  • Hard-decision decoding scheme Codeword length (n) : 31 symbols. Message length (k) : 19 symbols.

    Hard-decision decoding scheme Codeword length (n) : 31 symbols. Message length (k) : 19 symbols. Error correction capability (t) : 6 symbols One symbol represents 5 bit. Uses GF(2^5) with primitive polynomial p(x) = X^5 X^2 + 1 Generator polynomial, g(x) = a^15 a^21*X + a^6*X^2 + a^15*X^3 + a^25*X^4 + a^17*X^5 + a^18*X^6 + a^30*X^7 + a^20*X^8 + a^23*X^9 + a^27*X^10 + a^24*X^11 + X^12. Note: a = alpha, primitive element in GF(2^5) and a^i is root of g(x) for i = 19, 20, ..., 30. Uses Verilog description with synthesizable RTL modelling. Consists of 5 main blocks: SC (Syndrome Computation), KES (Key Equation Solver), CSEE (Chien Search and Error Evaluator), Controller and FIFO Register.

    標(biāo)簽: symbols length Hard-decision Codeword

    上傳時(shí)間: 2014-07-08

    上傳用戶:曹云鵬

  • his paper provides a tutorial and survey of methods for parameterizing surfaces with a view to appl

    his paper provides a tutorial and survey of methods for parameterizing surfaces with a view to applications in geometric modelling and computer graphics. We gather various concepts from di® erential geometry which are relevant to surface mapping and use them to understand the strengths and weaknesses of the many methods for parameterizing piecewise linear surfaces and their relationship to one another.

    標(biāo)簽: parameterizing provides tutorial surfaces

    上傳時(shí)間: 2014-11-09

    上傳用戶:努力努力再努力

  • 這是學(xué)習(xí)《Data Structures Using C++》

    這是學(xué)習(xí)《Data Structures Using C++》 ,中文名字《數(shù)據(jù)結(jié)構(gòu)--C++版》的一個(gè)源代碼,描述polynomial的一個(gè)類的源碼

    標(biāo)簽: Structures Using Data

    上傳時(shí)間: 2014-01-18

    上傳用戶:Thuan

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