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An Optimized Index Modulation for Filter Bank Multicarrier (FBMC) System

Zhang, J, Zhao, M, Zhong, J, Xiao, Pei and Yu, T (2017) An Optimized Index Modulation for Filter Bank Multicarrier (FBMC) System IET Communications, 11 (4). pp. 459-467.

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Orthogonal frequency division multiplexing with index modulation (OFDM-IM) has attracted considerable interest recently. The technique uses the subcarrier indices as a source of information. In FBMC system, doubledispersive channels lead to inter-carrier interference (ICI) and/or inter-symbol interference (ISI), which are caused by the neighboring symbols in the frequency and/or time domain. When we introduce index modulation to the FBMC system, the interference power will be smaller comparing to that of the conventional FBMC system as some subcarriers carry nothing but zeros. In this paper, the advantages of FBMC with index modulation (FBMC-IM) are investigated by comparing the signal to interference ratio (SIR) with that of the conventional FBMC system. However, the bit error rate (BER) performance is affected since there exists interference in the FBMC-IM system. To improve the BER performance, we propose an optimal combination-selection algorithm and an optimal combinationmapping rule. By abandoning some combinations whose error probability are larger and by mapping the remaining combinations into specified bits, a better BER performance can be achieved compared with that without optimization. The theoretical analysis and simulation results clearly show the FBMC-IM system has a good BER performance under double-dispersive channels.

Item Type: Article
Subjects : Electronic Engineering
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Zhang, J
Zhao, M
Zhong, J
Yu, T
Date : 9 March 2017
DOI : 10.1049/iet-com.2016.0564
Copyright Disclaimer : This paper is a postprint of a paper submitted to and accepted for publication in IET Communications and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library
Uncontrolled Keywords : Index modulation, FBMC, SIR, combination-selection algorithm, combination-mapping rule
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 25 Oct 2016 16:37
Last Modified : 16 Jan 2019 17:09

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