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...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.展开更多
设计了一种基于Homeplug AV技术利用家用同轴电缆实现家庭HFC网的双向接入设备。介绍了整个系统的设计思路,并对Homeplug AV over Coax设备进行了测试,包括衰减、设备组网、网络节点、传输帧的大小对整个系统的吞吐量、延时的影响,得出...设计了一种基于Homeplug AV技术利用家用同轴电缆实现家庭HFC网的双向接入设备。介绍了整个系统的设计思路,并对Homeplug AV over Coax设备进行了测试,包括衰减、设备组网、网络节点、传输帧的大小对整个系统的吞吐量、延时的影响,得出其性能要比电力线上用好得多,并对Homeplug AV over Coax的应用前景作了分析。展开更多
基金Supported by the National High-Tech Research and Development (863) Program of China (No. 2007AA01Z2B6)
文摘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.
文摘设计了一种基于Homeplug AV技术利用家用同轴电缆实现家庭HFC网的双向接入设备。介绍了整个系统的设计思路,并对Homeplug AV over Coax设备进行了测试,包括衰减、设备组网、网络节点、传输帧的大小对整个系统的吞吐量、延时的影响,得出其性能要比电力线上用好得多,并对Homeplug AV over Coax的应用前景作了分析。
