基于 OFDM 窄带载波通讯技术的研究与应用

摘要

In this paper , through the OFDM error correction technology , time and frequency domain interleaving tech-nology , research and diversity , channel equalization , channel mapping technology and a series of physical layer com-munication technologies , a variety of techniques to optimize a combination of careful selection and repeated applica-tions so as to achieve to overcome time-varying, noise, attenuation, distortion, etc., and to form a stable, robust and efficient system of power line communication channels , thereby solving some of the problems in the information collec-tion system existing in the local communication channel .Meanwhile , a method for evaluating the performance of carri-er communication is designed , and compared several common carrier solutions to verify the reasonableness and accura-cy of the proposed method .%通过对OFDM的纠错技术、时频域交织技术、分集技术、信道均衡技术、信道映射技术等一系列物理层通信技术的研究，对各种技术的审慎选取及反复优化组合应用，达到克服时变、噪声、衰减、畸变等问题，形成一个在电力线这个恶劣信道上进行稳定、高效通信的鲁棒系统，进而解决用电信息采集系统中本地通信信道存在的一些问题；同时设计了一套载波通讯性能的评估方法，并对常见的几种载波方案进行了对比测试，以验证该方法的合理性及正确性。