矿井通信中基于稀疏特性抑制信号高峰均比的新方法  

New PAPR Reduction Method Based on Sparse Characteristic in Mine Communication

作　　者：郭铁梁 张文祥 李志军 农维升 GUO Tieliang;ZHANG Wenxiang;LI Zhijun;NONG Weisheng(School of Electronic and Information Engineering,Wuzhou University,Wuzhou 543002,China;Guangxi Key Laboratory of Machine Vision and Intelligent Control,Wuzhou 543002,China)

机构地区：[1]梧州学院电子与信息工程学院,广西梧州543002 [2]广西机器视觉与智能控制省级重点实验室,广西梧州543002

出　　处：《煤炭技术》2022年第8期194-197,共4页Coal Technology

基　　金：教育部第二批“新工科”研究与实践项目(E-DZYQ20201426);广西高等教育本科教学改革工程重点项目(2021JGZ159);梧州市科学研究与技术开发计划项目(201902035,201902038);梧州学院重点科研项目(2018A005,2018A006,2018A007)。

摘　　要：在矿井通信中传输正交频分复用(OFDM)信号,由于多载波的存在会引起较高的峰均比(PAPR),采用限幅法抑制PAPR会产生限幅噪声,为了在接收端恢复数据,需要对发射端产生的限幅噪声进行计算,提出了一种基于限幅噪声稀疏特性利用压缩感知(CS)技术计算限幅噪声的新方法。分析结果表明,这种方法能够有效抑制PAPR,保证矿井通信传输信号的准确性。When OFDM (orthogonal frequency division multiplexing) signal is transmitted in the mine communication system, there will emerge higher PAPR(peak to average power ratio) due to the existence of the multicarrier. Using the clipping method can produce clipping noise for PAPR suppression. In order to recover data at the receiving end, the clipping noise of the emitter end needs to be calculated. A new method is put forward based on the sparse feature to calculate clipping noise through CS(compression sensing) technique. The results of analysis show that this algorithm is able to inhibit PAPR effectively, and ensure the accuracy of the signal transmitted in the mine communication.

关 键 词：矿井通信 正交频分复用 峰均比 压缩感知 

分 类 号：TN919[电子电信—通信与信息系统]