New DFE with Phase-Locked Loop

摘要：

In 1 the decision feedback equalizer (DFE) based on constant modulus algorithm (CMA) and decision directed (DD) adaptive algorithm was proposed. It has been proved that it is much more effective than the conventional DFEs such as DFE based on CMA and DFE based on DD. However when Doppler frequency shift occurs in the communication channel, which can result in carrier phase rotation, the decisions precision is very low which degrades the performance of these DFEs. Consequently based on the DFE in 1 a new DFE with phase-looked loop (PLL) is proposed. The PLL works in CMA part which can offer correct decision for DD, so the proposed method can obtain lower steady state MSE and compensate phase rotations. The efficiency of the method is proved by computer simulation.

关键词： decision feedback equalizer phase rotation blind equalization

作者: Wei Rao Huijuan Gao Baojuan Zou Wenqun Tan

作者单位: Nanchang Institute of Technology Nanchang,China

会议类型: 国际会议

会议名称: 2010 4th International Conference on Intelligent Information Techonlogy Application(第四届智能信息技术应用国际学术研讨会 IITA 2010)

会议地点: 秦皇岛

会议语种:英文

页码: 21-24

在线出版日期: 2010-11-05（万方平台首次上网日期，不代表论文的发表时间）