QAM Signal Transmission Based on Matrix Model in Filter-Bank Multicarrier Systems

IEEE Access

卷:6

Wei Xiang¹  Fei Li²  Hui Zhao²  Kan Zheng² 

[1] College of Science and Engineering, James Cook University, Townsville, QLD, Australia;

[2] School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China;

关键词: Multicarrier;    FBMC;    QAM;    channel estimation;    MIMO;    complexity;   

DOI  :  10.1109/ACCESS.2018.2877252

来源: DOAJ

【 摘 要 】

In the upcoming fifth-generation (5G) mobile network, the filter bank multi-carrier (FBMC) technique provides an alternative to cyclic prefix-orthogonal frequency-division multiplexing (CP-OFDM). The most fascinating features of FBMC are high spectral efficiency and extremely low out-of-band emissions by removing the CP and using well-localized pulse shapes. FBMC exhibits intrinsic inter-carrier/intersymbol interference which can be mitigated by techniques such as offset quadrature amplitude modulation (OQAM). However, OQAM does not work well in multi-path fading channels. Consequently, conventional channel estimation methods and MIMO based upon space-time/frequency block coding are not straightforward applicable to the FBMC system. This paper presents two new transceiver architectures for the FBMC/QAM matrix. First of all, the matrix models of the FBMC/QAM scheme are derived. Second, based on the matrix models, three receiver methods are then described. Then, the scheme of combining FBMC/QAM with channel estimation and MIMO is proposed. Finally, two simplified receiver algorithms based on the matrix models are proposed. Simulation results indicate that the proposed transceivers of the FBMC/QAM matrix scheme can directly combine with the channel estimation and MIMO techniques used in conventional OFDM systems. Furthermore, the proposed transceivers of the FBMC/QAM matrix scheme have almost the same BER performance compared with the conventional OFDM systems.

【 授权许可】

Unknown