| 赵清华,马天鸣,王星.一种 FBMC 系统干扰分类预处理方案[J].高技术通讯(中文),2022,32(3):261~269 |
| 一种 FBMC 系统干扰分类预处理方案 |
| A preprocessing scheme for interference classification of FBMC system |
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| DOI：10.3772/j.issn.1002-0470.2022.03.005 |
| 中文关键词: 滤波器组多载波(FBMC); 信道估计; 预处理; 辅助导频(AP); 编码 |
| 英文关键词: filter bank multicarrier (FBMC), channel estimation, preprocessing, auxiliary pilot (AP), coding |
| 基金项目: |
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| 摘要点击次数: 1507 |
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| 中文摘要: |
| 为解决滤波器组多载波（FBMC）信道估计中导频符号所含虚部干扰的影响，提出了一种发送端导频周围符号的预处理方案。该方案利用干扰系数矩阵通过预消除导频邻域低功率符号的影响，来改善FBMC系统接收端信道估计的复杂度，将导频符号的干扰问题转换为对极少数几个高干扰系数的符号处理，并结合具体方案给出该预处理方案的适用情形，使得一些包括辅助导频法（AP）、编码法（Cod）在内的只可在原理上实现的方案可以直接在实际上得到应用。理论分析和仿真结果表明，当使用该方案后，传统基于离散导频估计FBMC信道所面临的问题都能得到有效解决，并且相对于其他改进方案，该方案进一步实现了频谱效率的优化。 |
| 英文摘要: |
| In order to solve the influence of the imaginary part interference contained in pilot symbols in filter bank multi-carrier (FBMC) channel estimation, a preprocessing scheme of symbols around the pilot is proposed. In this scheme, the interference coefficient matrix is used to reduce the complexity of channel estimation at the receiving end of FBMC system by pre-eliminating the influence of low-power symbols in the pilot neighborhood. The interfer-ence problem of pilot symbols is transformed into the processing of a few symbols with high interference coefficient. The application of the pretreatment scheme is given in combination with the specific scheme. Some schemes which can only be realized in principle, such as auxiliary pilot (AP) and coding method (Cod), can be directly applied in practice. Theoretical analysis and simulation results show that the problems of traditional FBMC channel estima-tion based on discrete pilot can be solved effectively, and compared with other improved schemes, the proposed schemKeefyurwthoerrdsrealizes the optimization of spectrum efficiency. |
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