基于干扰消除的BICM-FBMC-ID接收机设计

发布时间：2018-03-30 14:33

本文选题：偏移正交幅度调制滤波器组多载波技术(FBMC/OQAM)　切入点：基于迭代译码的比特交织编码调制(BICM-ID)　出处：《清华大学学报(自然科学版)》2017年08期

【摘要】：由于第五代移动通信(5G)中异步多址机器间通信等场景的特殊需求,非正交多载波技术得到广泛关注,偏移正交幅度调制滤波器组多载波技术(FBMC/OQAM)成为候选波形之一。该文首先分析了窄带干扰(NBI)和频选信道下残余固有干扰(RII)对FBMC系统的影响。分别设计了NBI消除模块和RII消除模块。为进一步提高系统性能,设计了将FBMC和基于迭代译码的比特交织编码调制(BICM-ID)相结合的接收机结构,在FBMC解调器与软入软出(SISO)译码器间进行迭代的消息交换。仿真结果表明:FBMC相比CP-OFDM,对NBI具有更好的鲁棒性,因此采用擦除法消除NBI影响获得了良好的效果;且经过数次迭代后,接收机性能接近假设所有先验信息已知时的最优性能界。对于不同星座类型在迭代过程中的性能也进行了分析比较。
[Abstract]:Due to the special requirement of asynchronous multiple access machine communication and other scenarios in the fifth generation mobile communication system, non-orthogonal multicarrier technology has been paid more and more attention. Offset quadrature amplitude modulation filter bank (OQAM) is one of the candidate waveforms. In this paper, the influence of narrow band interference (NBI) and residual inherent interference (RII) on FBMC system is analyzed, and the NBI cancellation module is designed respectively. To further improve system performance, A receiver structure combining FBMC with BICM-ID-based bit Interleaved coded Modulation (BICM-ID) based on iterative decoding is designed. The iterative message exchange between the FBMC demodulator and the Soft-Inlet Soft-Output (SISO) decoder is carried out. The simulation results show that compared with CP-OFDM, the FBMC has better robustness to NBI, so erasure method is used to eliminate the influence of NBI, and after several iterations, a good result is obtained. The receiver performance is close to the optimal performance bound when all prior information is known. The performance of different constellation types in the iterative process is also analyzed and compared.
【作者单位】：清华大学电子工程系微波与数字通信国家重点实验室;清华大学清华信息科学与技术国家实验室(筹);
【基金】：国家“九七三”重点基础研究项目(2013CB329002) 国家自然科学基金青年项目(61631013) 国家“八六三”高技术项目(2015AA01A706) 国家科技重大专项项目(2016ZX03001023-003) 高校新世纪优秀人才培养项目(NCET-13-0321) 清华-高通联合研究项目
【分类号】：TN929.5

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