decoding theory 中文意思是什麼
decoding theory
解釋
譯碼理論-
Turbo codes represent the new code structures, which consist of pccc ( parallel serially convolutional code ) and sccc ( serially concatenated convolutional code ). in this paper, the background of turbo codes are firstly introduced, which includes the base principle of error correction code 、 block code and convolutional code ; the principle of turbo code and the iterative decoding is secondly expanded ; the key decoding algorithm : a revised map algorithm and iterative decoding theory are detailed ; then, a new turbo code structure : hccc ( hybrid concatenated convolutional code ) is presented, and the capacity of this code method is analyzed, the average capacity upper bound is derived ; at last, this code is simulated on awgn ( additive white gaussian noise ) channel and rayleigh fading channel
本文首先介紹了turbo碼的背景知識，包括差錯控制的基本原理、分組碼和卷積碼；然後闡述了turbo碼的基本原理，包括turbo編譯碼器結構及迭代譯碼原理；較為詳細地描述了關鍵的譯碼演算法： ?種改進的最大后驗概率（ map ）譯碼演算法及迭代譯碼演算法；提出了一種新的turbo碼結構：混合turbo碼（混合級聯卷積碼） ；並用編碼性能聯合界分析方法對混合turbo碼進行了性能分析，得出了其平均性能上界；並在高斯白噪聲通道和瑞利衰落通道上分別作了一些應用研究及計算機模擬實驗。 -
It can be summarized in several aspects : 1. researching the coding and decoding technic, and give the some method of improving the space coding theory. 2. researching the digital signal process technology, and build the control system by using the digital signal processor tmslf2407a. 3
本文主要研究激光駕束制導反坦克導彈技術以及其物理實現，主要工作包括以下幾個方面： 1對于制導編碼技術進行了一定程度的研究，提出了改進空間編碼技術的若干方法。 -
In the transmiting port, optical encoder turns data bits into spread spectrum sequences, then, optical decoder retverts it to data bits with the theory of correlation decoding in the receiving port
在發送端光編碼器將數據比特轉換成擴頻序列，在接收端光解碼器利用相關解碼原理將擴頻序列恢復為數據比特。 -
Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service, multi - modulationmode and multi - processdatarate. first, related software defined radio theory is introduced ; later, channels of transmitter - receiver are designed with consideration of data format, modulation, fec, interwaving. and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding
本文首先介紹了相關的軟體無線電理論；然後完成了包括數據格式，調制方式，糾錯碼方式，交織器和擾碼器等部分的中頻數據機通道設計；接著著重介紹了系統中使用的音頻壓縮演算法cvsd （連續可變斜率增量調制）的原理和實現，以及作為前向糾錯碼的卷積碼編碼理論和編解碼的高效實現。 -
There are several aspects of work that was done in this thesis mainly. firstly, the theory of the under - water long - range remote control system was analyzed and the remote control instruction code was designed. secondly, decoding circuit of the under - water long - range remote control system was designed with fpga, including vhdl coding, simulation, synthesis, place & route, etc. besides, power consumption to fpga that is designed is estimated in this thesis. lastly, we designed and made one pcb to verify and test fpga decoding chip that is designed, and debugged and tested it finally
首先，深入研究和分析了在頻域實現水下遠程遙控解碼的原理並進行了遙控指令編碼設計；其次，用altera公司的cyclone系列fpga晶元完成了水下遠程遙控fpga解碼晶元的設計工作，包括硬體描述語言（ vhdl ）編碼、電路前後模擬、綜合和布局布線工作，並對設計的fpga解碼晶元進行了初步的功耗估算；最後設計製作了一塊fpga解碼晶元電路驗證測試板，並完成了電路調試和測試。 -
The frame picking - up, sum checkout and decoding techniques of nmea0183 information in software design are discussed. the frame picking - up program for nmea0183 information is designed based on the finite state machine theory
研究了程序設計中nmea0183格式數據的幀提取、和校驗及解碼技術，基於有限狀態機理論設計了nmea0183格式數據的幀提取程序。 -
Serial algorithm improves decoding performance greatly ; serial algorithm finds the better trade - off between performance and complexity, it is a good decoding algorithm with high application value. ( 5 ) introduce the background of quantized decoding and basic theory. analyse effect of quantized decoding, research the impact of limited quantized to serial decoding, and present feasible project for quantized decoding
（ 5 ）介紹了量化譯碼的背景和量化原理，分析了量化譯碼對譯碼器實現的重要作用，基於串列譯碼演算法，以消息種類的不同分別研究了有限長量化對譯碼性能的影響，並提出可行的串列量化譯碼方案，其性能接近連續譯碼性能。 -
Therefore, the research targets of this dissertation are to realize the coding and the decoding of stbc after studying its theory
本文在研究了空時分組碼的理論基礎上，對其編譯碼器進行了硬體模擬實現。 -
This paper discussed the theory of encoding and decoding of turbo codes, researched some key techniques in encoder and decoder, analyzed the question of selection of the component codes and generation polynomial in encoder
本文討論了turbo碼的編譯碼原理，研究在其編譯碼器中的關鍵技術，重點探討了在編碼器中成員碼以及生成多項式的選擇問題。 -
Density evolution theory is specified and is applied to the analysis on the threshold of decoding, through which guidance can be provided to optimize irregular ldpc codes
闡述了密度進化理論，並分析了譯碼過程中存在的閾值現象。然後介紹了密度進化理論在ldpc碼優化方面的應用。 -
On the basis of analyzing the old system and theory, the element circuits of wireless digital audio transceiver modules are designed in detail including the digital audio encoding and decoding circuits with the surrounding circuits, the fsk circuit based on pll frequency synthesizer, the power amplifier circuit, the frequency discrimination and agc circuit
在分析原系統結構和理論的基礎上，完成了整個無線數字音頻傳輸模塊各單元電路的設計。主要包括有數字音頻編碼和解碼電路及外圍電路的設計、基於鎖相頻率合成器理論的fsk電路設計、功率放大器的設計、鑒頻與agc控制電路的設計。 -
In this paper, i mainly developed the theory of open - source ogg vorbis audio technique including its coding and decoding procedure. the theory was introduced in sections according to different functional modules
我在本論文的研究過程中，對oggvorbis演算法的編解碼原理進行了深入的研究，將其按照不同的模塊分別進行分析。 -
In this paper, we mainly develop the theory of melp, including the procedure of coding and decoding. in that time, we also have done the work of simulating analysis. in the end we research the method of completing this arithmetic of c programming language. in chapter one we briefly introduce the developing status of the technology of voice coding and decoding, the method of appraising the performance of voice coding and the structure of this paper. chapter two shows the general situation and the new five characters of melp. we introduce the coding procedure in chapter three and four and the decoding procedure in chapter five. chapter six shows the details of programming
本論文第一章簡要敘述了語音編解碼技術發展狀況、評價語音編碼性能的方法和本文的組織結構；第二章簡要介紹了melp語音壓縮編碼演算法的概況和melp演算法新增的五大特點；第三章和第四章詳細介紹了melp演算法的編碼過程；第五章詳細介紹了melp演算法的解碼過程；第六章對melp演算法的c語言實現方法作了介紹。 -
Since 1980s, many mathematicians have been engaged in studying the applications of the grobner basis such as solving the system of algebraic equations, factoring polynomials, testing primary ideals, factoring algebraic manifolds, decoding circular codes in corrected codes and algebraically geometrical codes, analyzing and synthesizing high dimensional linear recurring arrays in cryptology, dealing with multidimensional systematic theory, signaling, solving integer programming and so on
） bner基的應用研究包括代數方程組求解，多項式的因子分解，素理想的檢驗，代數流形的分解，糾錯碼中循環碼和代數幾何碼的譯碼，密碼學中高維線性遞歸陣列的分析與綜合，多維系統理論，信號處理和求解整數規劃等諸多領域。 -
( 3 ) combined with probability statistic knowledge, introduce the basic theory of message passing algorithm ; analyse the classical decoding algorithm of ldpc codes, including sum product algorithm which based on probability and llr, and min sum algorithm. ( 4 ) research message passing process on the tree ; according spa, turn the flooding schedule to serial schedule based on c - nodes and v - nodes, namely serial algorithm and, analyse de and complexity ; simulations show that the both serial algorithms could improve decoding performance, improve convergence property, reduce complexity
（ 4 ）研究了和積譯碼演算法在樹上的消息傳遞過程;在ldpc碼經典譯碼演算法基礎上，將洪水消息傳遞機制轉換成基於校驗節點的串列消息傳遞機制和基於變量節點的消息傳遞機制，分別對應串列譯碼演算法和串列譯碼演算法，並對密度進化和譯碼復雜度等方面進行分析;模擬結果表明，兩種串列譯碼演算法都使譯碼性能得到明顯提高，改善了消息收斂特性，降低了譯碼復雜度。 -
Firstly, this thesis reviews the evolution of image coding / decoding theory, summarizes the technology framework of several image / video coding / decoding standards, designs a contrasting research to these standards, interoperates the origin of the h. 264 ' s advantages, and investigates the principal structure and the key modules of h. 264, as establishing necessary theory basis for the practical application
首先，本文回顧了圖像編解碼理論的發展歷程，總結了多種靜態圖像和視頻的編解碼標準的技術框架，對各種標準進行了比較研究，然後分析了h . 264的優勢來源，接著研究了h . 264的主體結構和關鍵模塊，為實際應用奠定了必要的理論基礎。 -
The task is based on st ’ s sdtv channel decoder solution with a highly integrated single - chip fully digital qam demodulation stv0297. chapter 1 introduced the interrelated background of this item ; chapter 2 introduced the coding and decoding theory about channel ; chapter 3 described the hardware structure, the function, the realizing principle and the method of the pcb design ; the scheme and flow chart of software design are also described in detail in chapter 4 ; chapter 5 described the testing and analyzed the result ; at last, chapter 6 presented the summing - up of this dissertation
第一章介紹了本項目的相關背景知識;第二章簡單描述了通道編解碼原理;第三章系統地介紹了標準清晰度數字電視機頂盒通道解碼器的硬體構成、功能和實現原理，並介紹了電路板的設計方法;第四章對通道解碼的軟體設計方案和實現流程也做了比較詳細的闡述;第五章給出了測試結果並對其進行了分析;第六章對本論文進行了總結。 -
The forth chapter focus on the researches of decoding algorithm, first studies the decoding theory and decoding approaches of several iterative message passing algorithms for ldpc code, because of the conflict between simplification and reduced performance of bp decoding algorithm, the thesis analyzes the calculation complexity of each algorithm, and simulates the performance of each algorithm, by considering the tradeoff between hardware complexity and error performance, we get two algorithms which are much easier to implement : bp - based and normalized bp - based decoding algorithm, especially, the last one achieves considerable improvement with almost the same complexity
第四章對ldpc碼譯碼演算法進行了深入研究，給出了基於置信傳播的幾種譯碼演算法的原理和步驟，圍繞著bp演算法的簡化與譯碼性能下降的矛盾，研究了每一種譯碼演算法的復雜度分析，並相應地給出了每一種譯碼演算法的模擬性能曲線，綜合考慮譯碼性能和譯碼復雜度兩個方面，從而得出了適合硬體實現的演算法: bp - based和normalizedbp - based演算法，後者在基本不增加譯碼復雜度的情況下，對譯碼性能有較大的提高。 -
The research in software radio is not more than ten years, but has made a great many fruits, but it is too little to set up an integrated theory system, and software radio includes many areas such as modern communication system ( which includes modem source / channel encoding and decoding, equalization, encrypt and decrypt and so on ), wideband antenna theory, digital signal process, microelectronics, computer and so on. this thesis mainly does research for modem in modem communication
軟體無線電經過不到10年的研究，盡管取得了很多成果，但是對于建立一套完整的理論體系來說，還遠遠不夠，況且軟體無線電涉及的領域多、面廣、發展快，如現代通信理論（含調制解調、信源通道編解碼、均衡、加密解密等） 、寬帶天線理論、數字信號處理、微電子、計算機等。 -
In the third chapter, the principles of randomizer and de - randomizer are illuminated, and the hardware realization is also given. the fourth chapter is focused on the design of ip ( intellectual property ) and the analysis of the principle of rs encoding and decoding. based on the theory of design reuse in soc ( system on chip ), this chapter is devoted to the design and implementation of rs decoder ip which can be implied in three hdtv channel decoder standard
第四章首先介紹了ip的基本知識和設計流程，接著對rs碼的編碼和譯碼進行詳細的理論分析研究，提出rs編譯碼器實現方法，然後根據soc可復用設計設計思想，設計了一個應用於hdtv通道解碼的rs譯碼ip核，最後給出dvb - crs譯碼器的asic設計，並給出了其規模和性能。
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