这是一个有关数据库理论方面的ppt文件，它关于数据库方面的技术的学习资料，是学习数据库理论的好的文档。-This is a database of the theory of ppt documents, its database on the learning of information technology, database theory is the study of good documentation.

In computer science and information theory, data compression, source coding,[1] or bit-rate reduction involves encoding information using fewer bits than the original representation. Compression can be either be lossy or lossless. Lossless compressio

数字信号处理是一门研究信号处理的理论和技术，它具有注重信号本质和讲求信号处理实效的科学精神，是信息类大学生的一门重要课程。-Digital signal processing is a study of the theory and techniques of signal processing, signal it has focused on the nature and effectiveness of stress signal processing scientific spirit

Considered a 16QAM communication system. The information rate is 2 Mb/s and the carrier frequency is 12 GHz. Assumed perfect synchronization. a) Simulated the system if the channel is AWGN and draw bit error rate of the system versus Eb/No. Com