一种有效的golomb解码器设计与硬件实现

Golomb编码压缩算法已被广泛地应用于视频图像处理、测试数据压缩等众多领域。本文设计了一种有效的适合硬件实现的Golomb解码器,并且完成了解码器电路的硬件实现。本设计采用有限状态机(FSM)与计数器相结合的解码结构,并且对有限状态机的实现进行了优化,减少了有限状态机的状态数。电路综合实验结果表明,此解码器的电路门数大约为120门,关键路径延时为0.7ns。该设计可扩展性强、硬件开销少,可在较高的工作频率下工作,并且可以作为独立的IP核使用。     

单片机通信的汉明码

差错控制编码理论是现代通信的一个重要理论范畴并在实际中有广泛的应用。本文介绍汉明码的编码、译码和差错校正的原理 ,并给出单片机与PC机间通信的编程实例。     

Zp2上线性码的Lee重量算子

Asch等人给出了Zp2上线性码及其对称重量算子,其中p为奇素数,文章在Asch等人的结果上给出了Zp2的Lee重量以及重量算子与对称重量算子之间的关系。     

计算机专业"源码剖析"实践教学模式的探讨

探讨了源码剖析在计算机实践教学中的应用，对其适用场合、作用进行了分析，着重强调了从源码题材的选取和过程控制两个方面来保障源码剖析学习的顺利开展。     

关于Hamming码与循环码的一点注记

讨论了Hamming码与循环码之间的关系，得到的主要结果是：设n＝（q~m─1）／（q—1），（n，q—1）＝1，则有k个［n，n─m」Hamming码是循环吗，其中k是（x~m─1）／（x─1）中m次不可约多项式的个数．     

Turbo码交织器新探

本文提出了一种新型交织器,对其完备性从数学上给出了证明,进行了计算机仿真,分析了仿真结果,并与其它交织方案的性能作了比较.     

Study on one-dimensional consolidation of soil under cyclic loading and with varied compressibility

This paper presents a semi-analytical method to solve one dimensional consolidation problem by taking consideration of varied compressibility of soil under cyclic loading. In the method, soil stratum is divided equally into n layers while load and consolidation time are also divided into small parts and time intervals accordingly. The problem of one-dimensional consolidation of soil stratum under cyclic loading can then be dealt with at each time interval as one-dimensional linear consolidation of multi-layered soils under constant loading. The compression or rebounding of each soil layer can be judged by the effective stress of the layer. When the effective stress is larger than that in the last time interval, the soil layer is compressed, and when it is smaller, the soil layer rebounds. Thus, appropriate compressibility can be chosen and the consolidation of the layered system can be analyzed by the available analytical linear consolidation theory. Based on the semi-analytical method, a computer progra     

QR Codes in Libraries: Uses and Usage Tracking

This article discusses the uses of Quick Response (QR) codes in libraries and how to assess their usefulness. It describes a step-by-step approach to developing a system to track the scans of QR codes by library users for assessment.     

The symphony: Organizational discourse and the symbolic tensions between artistic and business ideologies

This study represents an ethnographic account of the organizational discourse that constituted, at least in part, the cultural world of a regional symphony. Within the Symphony, organizational members embraced a particular ideology that was grounded in the symbolic expression of either an artistic code or a business code, each code competing with one another for organizational prominence. The enactment of these codes revealed the fractured nature of Symphony life where musicians and their expressions of the artistic code were pitted against management and the board of directors who primarily advanced a corporate vision of decision making. Based on the routine speech of organizational members, it was argued that a business orientation prevailed much of the time and, consequently, served to diminish artistic concerns about how the Symphony should function.     

BCH—LT级联码的分析与设计

通过把无码率LT码和BCH码进行级联,构造了一类性能优异的级联码,并且提出了软判决迭代译码算法,应用在内外码的译码过程中,解决了错误平层问题。通过仿真可知,在加性高斯白噪声二进制对称信道中,该级联码在很宽的信噪比下具有较好的性能,可以进行可靠的传输。