基于FPGA的分数间隔预测判决反馈均衡器的设计与实现
霍亚娟;葛临东;王彬
【期刊名称】《电路与系统学报》 【年(卷),期】2011(016)004
【摘要】针对高阶QAM信号,本文设计实现了一种基于FPGA的分数间隔预测判决反馈均衡器.前向滤波器采用分数间隔结构,反馈部分采用预测结构,仍保持符号速率.该均衡器充分结合了分数间隔均衡器与预测判决反馈均衡器的优势,能够消除由深衰落信道引起的严重码间干扰.同时,该均衡器采用简化后的双模式多模算法独立优化前向、反馈滤波器,简化算法在获得较好的稳态性能同时,简化了FPGA实现.通过SPIB提供的微波信道测试表明,在FPGA上实现的盲均衡器能够较好地完成对不同调制阶数QAM信号的均衡.%This paper focuses on the design and implementation of a fractionally spaced predictive decision feedback equalizer based on FPGA for high order QAM signals. The forward filter is designed to be a fractionally spaced filter, while the feedback filter with a predictive structure is implemented as a symbol rate filter. The equalizer integrates the advantages of both the fractionally spaced equalizer and the predictive decision feedback equalizer. Also, the equalizer can eliminate the severe inter-symbol interference caused by severe channel fading. Meanwhile, the forward and feedback filters are designed separately with the simplified dual mode multi-modulus algorithm which provides superior steady-state performance and simplifies FPGA implementation. According to the
microwave channel test provided by the SPIB, the blind equalizer implemented on FPGA is capable of equalizing QAM signals with different orders in a better way. 【总页数】7页(103-109)
【关键词】盲均衡器;分数间隔;预测判决反馈;FPGA 【作者】霍亚娟;葛临东;王彬
【作者单位】信息工程大学信息工程学院,河南郑州450002;信息工程大学信息工程学院,河南郑州450002;信息工程大学信息工程学院,河南郑州450002 【正文语种】中文 【中图分类】TN911.5 【文献来源】
https://www.zhangqiaokeyan.com/academic-journal-cn_journal-circuits-systems_thesis/0201234100713.html 【相关文献】
1.基于FPGA的判决反馈均衡器的设计与实现 [J], 徐迎刚; 陈伟; 黄秋元; 王滨 2.基于FPGA的判决反馈均衡器的设计与实现 [J], 徐迎刚; 陈伟; 黄秋元; 王滨 3.基于FPGA的判决反馈均衡器的实现 [J], 王洪强 4.分数间隔判决反馈盲均衡器的设计与仿真 [J], 王宇舟
5.基于JUMMSE准则的前向分数间隔判决反馈均衡器 [J], 刘锋; 葛临东
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基于FPGA的分数间隔预测判决反馈均衡器的设计与实现
