查询词典 decoding

The main work and innovation1 In general , a image compression method has different effect to different image . Some are fit for image which has much high frequency . Some are fit for image which has much low frequency .This paper analysis the applicability of fractal algorithm . In this dissertation , an improved algorithum is given . The basic algorithum without eight change and the joint use of quantitative coding , The compression ratio and PSNR can be adjusted , and it can get more quickly speed of coding .2 To a group of exact fractal code , the decoding image can be any resolution .With this characteristic ,choose the proper domain block and range block,this paper get an algorithum which can get higher decoding PSNR and speed than the basic fractal algorithum.3 Give a new method to calculate the scale factor . The calculation of basic algorithum is complex and enormous . The factor of scale is an important variable of the basic algorithm. Now there are two methods to calculate the factor of scale .A new method was given to calculate the factor of scale. The calculation load and complexity are reduced by the new method. Compared with the basic algorithm , the method can reduce coding time.4 The basic fractal algorithum is based on the Collage theorem and contraction mapping theorem . A mathematic model based on basic fractal algorithum is given .

本文的主要工作及创新点主要包括以下几点：1一般情况下，一种图像压缩的方法对不同特点的图像，压缩效果会有所不同，本文利用分形压缩编码对不同特点的图像进行编码，分析了分形编码对不同图像的编码适用性，利用去掉8种变换的分形编码算法与简单的均匀量化编码方案相结合，得到了一种可以调节压缩比与解码质量的分形编码方案，该提高编码速度6倍以上。2分形编码的特点之一是分形解码的分辨率无关性，即对于一组分形编码可以将其解码到任意分辨率下，本文利用分形编码的这一特点，结合不同的量化编码方案，选择合适的定义域块与值域块及适当的编解码分辨率，得到了一种提高解码质量，编码速度提高12倍以上的加速算法。3比例因子是基本分形算法中的一个重要变量，目前有两种计算比例因子的方法，文中给出了一种新的求比例因子的方法，该方法简化了求比例因子的计算，从整体上减小了基本分形算法的计算量，简化了算法4分形压缩的数学基础是不动点定理与拼贴定理，本文根据基本的自动分形编码方法，建立数学模型对其进行推导，得到了用普通数学的极限理论解释分形编码的数学表达式，从而对由基本分形编码得到的解码图像中的像素点的值给出了确定的表达式。

From the point of decoding, a new multistage decoding method is given on the basis of the traditional one.

从BCM码译码角度出发，在原有多级译码的基础上提出了一种新的多级译码算法。

To improve the decoding performance of Low Density Parity Check code, an efficient decoding algorithm based on min-sum algorithm is proposed.

针对低密度奇偶校验译码算法性能低的问题，提出一种基于最小和的高效译码算法。

In every-time iteration, we firstly estimate the signal amplitude and variance of residual interference plus noise with the output of channel decoding, then calculate the extrinsic information of multiuser detection, and finally conduct channel decoding.

在每一次迭代，首先根据信道译码器的输出估计信号幅度和冗余干扰及噪声方差，然后计算多用户检测的外信息输出，最后是信道译码。

Introduce EXIT charts, discuss the LDPC ensemble design methods via EXIT charts in BEC and AWGN channels. Design maximum code rate LDPC ensembles in 2×2 MIMO systems via linear programming and curve fitting.(6) In view of tradeoff between decoding complexity and decoding accuracy, design suboptimum MIMO interference canceling detector, compare it with dual iterative MIMO detector.

6考虑到译码复杂度与译码精度之间的权衡，作者设计了次最优的干扰消除MIMO检测器，并与双重迭代MIMO检测器进行了对比分析。

Input buffer management of the playback control for MP3 players includes (1) initializing a totalizer to zero,(2) finding a synchronization word of a frame,(3) decoding a header,(4) calculating the size of a main_data field, and (5) decoding the enclosed audio data.

一种MP3播放器的录放控制器的输入缓冲器的管理方法，包括：(1)将加法计算器初始化为零；(2)从音频帧中寻找同步字；(3)对帧头进行解码；(4)计算main_data区域的大小；以及(5)对选定的音频数据进行解码。

This is a Turbo codes in the process of decoding the MAP decoding methods, very good!

这是一个有关Turbo码编译码的程序，译码采用的是MAP译码方法，挺好！

The date of decoding shows that: the video after decoding retained the original image quality, but the date loss lessness.

解码后的数据显示：压缩视频被解码后保留了原图像的质量，而且数据丢失量小。

The general decoding method for Turbo codes provided by the invention adopts enhanced Max-Log-MAP algorithm, makes use of Max-Sum semiring property in the generalized distribution law and combines and simplifies measure and calculation of forward and backward status of traditional binary Turbo codes, which means combining grid graph of traditional binary Turbo codes in nature to ensure that the status measure and calculation of the traditional binary Turbo codes have the same calculation expression way with that of the duobinary Turbo codes so that a general decoding device can both decode the traditional binary Turbo codes and duobinary Turbo codes.

本发明提出的Turbo码通用译码方法采用增强型Max-Log-MAP算法，利用广义分配率中的Max-Sum半环性质，对传统二进制Turbo码的前向和后向状态度量计算进行合并简化，从本质上也就是对传统二进制Turbo码的网格图进行合并，使得传统二进制Turbo码的状态度量具有和双二进制Turbo码一样的计算表达方式，从而使得通用译码装置对于传统二进制Turbo码和双二进制Turbo码都可实现。

The author describes basic principle of theftproof system of automotive audio system and its decoding method with detailed introduction to the decoding processes of seven representative vehicles while their audio systems are dead locked.

阐述汽车音响防盗系统基本原理及锁死的解码方法，详细介绍7款代表车型的音响系统锁死后的解码过程。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。