Real-Time Application of DPCM and ADM Systems

作     者：Roger Achkar Gaby AbouHaidar Christopher Mansour Nashaat E1 Halabi 

作者机构：Department of Computer and Communications Engineering American University of Science and Technology Beirut 1107-2020Lebanon 

出 版 物：《通讯和计算机（中英文版）》 (Journal of Communication and Computer)

年 卷 期：2013年第10卷第4期

页      面：545-553页

学科分类：0810[工学-信息与通信工程] 08[工学] 0835[工学-软件工程] 081001[工学-通信与信息系统] 081202[工学-计算机软件与理论] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：ADM系统 DPCM 实时应用程序 差分脉冲编码调制 自适应增量调制 数字通信技术 Simulink 量化误差 

摘      要：Digital communication techniques have proved their preference over analog communication techniques due to their higher reliability, flexibility and compatibility. However, the commonly used digital communication techniques such as PCM (pulse coded modulation) and LDM (linear delta modulation) cause quantization error, slope overload distortion, and granular noise which all negatively affect the communication process. In order to solve the aforementioned problems, ADM (adaptive delta modulation) and DPCM (differential pulse coded modulation) are discussed and implemented. DPCM system solves the quantization error problem, and ADM solves the slope overload distortion and the granular noise problems. To implement these two systems, Simulink (The Math Works, INC., Natick, MA, USA) is used on a multithreaded processor computer; moreover, they are tested in real-time and subjected to different kinds of noise.