Joint sparse graph for FBMC/OQAM systems

Wen, L., Xiao, P., Razavi, R., Imran, M. A. , AL-Imari, M., Maaref, A. and Lei, J. (2018) Joint sparse graph for FBMC/OQAM systems. IEEE Transactions on Vehicular Technology, 67(7), pp. 6098-6112. (doi: 10.1109/TVT.2018.2810638)

Abstract

As an advanced non-orthogonal multiple access (NOMA) technique, the low density signature (LDS) has never been used in filter bank multicarrier (FBMC) systems. In this paper, we model a low density weight matrix (LDWM) to utilize the intrinsic interference in FBMC systems when single-tap equalization is employed, and propose a LDS-FBMC scheme which applies LDS to FBMC signals. In addition, a joint sparse graph for FBMC named JSG-FBMC is proposed to combine single graphs of LDS, LDWM and low density parity-check (LDPC) codes which respectively represent techniques of NOMA, multicarrier modulation and channel coding. By employing the message passing algorithm (MPA), a joint receiver performing detection and decoding simultaneously on the joint sparse graph is designed. Extrinsic information transfer (EXIT) charts and construction guidelines of the joint sparse graph are studied. Simulations show the superiority of JSG-FBMC to state-of-the-art techniques such as OFDM, FBMC, LDS-OFDM, LDS-FBMC and turbo structured LDS-FBMC.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Imran, Professor Muhammad
• Authors: Wen, L., Xiao, P., Razavi, R., Imran, M. A., AL-Imari, M., Maaref, A., and Lei, J.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: IEEE Transactions on Vehicular Technology
• Publisher: IEEE
• ISSN: 0018-9545
• ISSN (Online): 1939-9359
• Published Online: 28 February 2018
• Copyright Holders: Copyright © 2018 IEEE
• First Published: First published in IEEE Transactions on Vehicular Technology 67(7):6098-6112
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher