通信学报2017，Vol.38Issue(4)：190-198,9.DOI:10.11959/j.issn.1000-436x.2017052
基于频域迭代判决反馈均衡的低复杂度FTN接收机
Low-complexity FTN receivers based on frequency domain iterative decision feedback equalization
摘要
Abstract
Faster-than-Nyquist (FTN) signaling can improve the system effectiveness without reducing the system reliability,but the fierce inter-symbol interference (ISI) introduced by it may cause that the complexity of the optimal receiver is intolerable.An effective low-complexity FTN receiver is iterative block decision feedback equalizer (IBDFE),which can achieve performance close to the optimal receiver with much lower complexity,but its complexity can be further reduced.Therefore,a reduced-complexity IBDFE (RC-IBDFE) was proposed for FTN communication systems,which was based on IBDFE,but introduced a simplified method to design the feedforward and feedback filters.When packing factor is τ={0.8,0.7},numerical results and analysis indicate that,compared with IBDFE,RC-IBDFE has stronger robustness,its complexity is reduced by {45.7％,25％},and its performance gain is {0.605 4,0.193 6} dB when the bit error rate (BER) is 10-5.Compared with the existing low-complexity IBDFE (LC-IBDFE),RC-IBDFE has stronger robustness,its complexity is reduced by { 13.6％,-25.8％},and its performance gain is {0.289 7,0.531 2} dB when the BER is 10-5.关键词
FTN信号传输/码间串扰/迭代块判决反馈均衡器/复杂度Key words
FTN signaling/inter-symbol interference/iterative block decision feedback equalizer/complexity分类
信息技术与安全科学引用本文复制引用
曾娟,王颖,李晓娜,王中方,汪永明..基于频域迭代判决反馈均衡的低复杂度FTN接收机[J].通信学报,2017,38(4):190-198,9.基金项目
国家自然科学基金资助项目(No.61501459)The National Natural Science Foundation of China (No.61501459) （No.61501459）
