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this is a code which can show data from the outside!

Optimisation of the pilot-to-data power ratio in the wireless MIMO-OFDM system with low-complexity MMSE channel estimation

made by: kangkai data:2008.11.23 this one is used to test arm7 str71x. use a led to test GPIO. a---------P0.0 b---------P0.1 c---------P0.2 d---------P0.3 e---------P0.4 f---------P0.5 g---------P0.6 just run it and you will see the led to show 0-9 all the time.

实现IDEA加密算法与解密算法 IDEA(International Data Encryption Algorithm)是瑞士的James Massey，Xuejia Lai等人提出的加密算法，在密码学中属于数据块加密算法(Block Cipher)类。IDEA使用长度为128bit的密钥，数据块大小为64bit。从理论上讲，IDEA属于“强”加密算法，至今还没有出现对该算法的有效攻击算法。 ...

Trees are natural structures for representing certain kinds of hierarchical data. A (rooted) tree consists of a set of nodes (or vertices) and a set of arcs (or edges).

论文 数据库查询 Processing Queries on Tree-Structured Data Efficiently

数据加密算法（Data Encryption Algorithm，DEA）的数据加密标准（Data Encryption Standard，DES）是规范的描述，它出自 IBM 的研究工作，并在 1997 年被美国政府正式采纳。它很可能是使用最广泛的秘钥系统，特别是在保护金融数据的安全中，最初开发的 DES 是嵌入硬 件中的。通常，自动取款机（Automated Teller Machine， ...

measure through the cross-entropy of test data. In addition, we introduce two novel smoothing techniques, one a variation of Jelinek-Mercer smoothing and one a very simple linear interpolation technique, both of which outperform existing methods.

Generate trellis data of a rate-1/n convolutional encoder.卷积码1/n的编码器，注意生成的是非系统码。

PEX 8311 ExpressLane PCI Express-to-Generic Local Bus Bridge Data Book