LDPC Coded TDS-OFDM for PLC Systems

作     者：戴凌龙 符剑 王军 

作者机构：State Key Laboratory on Microwave and Digital CommunicationsDepartment of Electronic EngineeringTsinghua University 

出 版 物：《Tsinghua Science and Technology》 (清华大学学报（自然科学版（英文版）)

年 卷 期：2010年第15卷第3期

页      面：312-318页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 

基　　金：Supported by the National High-Tech Research and Development (863) Program of China (No. 2007AA01Z2B6) 

主　　题：powerline communications （PLC） time domain synchronous OFDM （TDS-OFDM） low density parity check （LDPC） HomePlug AV channel measurement 

摘      要：Powerline communications （PLC） have drawn great interest in recent years. However, most PLC standards such as HomePlug AV use the cyclic-prefix OFDM （CP-OFDM） technology. This paper presents a broadband PLC system using low density parity check （LDPC） coded time domain synchronous OFDM （TDS-OFDM）, whose spectrum efficiency is about 10% higher than that of CP-OFDM. With the same bandwidth and the ability to combat the time delay spread as HomePlug AV, this system can provide a maximum throughput of 199.7 Mbps physical layer data rate. Simulations over the measured practical powerline channel in Beijing, China, show that LDPC in the TDS-OFDM system dramatically improves the bit error rate performance, and verify the feasibility and performance of the TDS-OFDM technology for PLC systems.