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Efficient Implementation of Filter Bank Multicarrier Systems Using Circular Fast Convolution

Taheri, S, Ghoraishi, M, Xiao, P and Zhang, Lei (2017) Efficient Implementation of Filter Bank Multicarrier Systems Using Circular Fast Convolution IEEE Access, 5. pp. 2855-2869.

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Abstract

In this paper, filter bank based multicarrier systems using fast convolution approach are investigated. We show that exploiting offset quadrature amplitude modulation enables us to perform FFT/IFFT based convolution without overlapped processing and the circular distortion can be discarded as a part of orthogonal interference terms. This property has two advantages. Firstly, it leads to spectral efficiency enhancement in the system by removing the prototype filter transients. Secondly, the complexity of the system is significantly reduced due to using efficient FFT algorithms for convolution. The new scheme is compared with the conventional waveforms in terms of out of band radiation, orthogonality, spectral efficiency and complexity. The performance of the receiver and the equalization methods are investigated and compared with other waveforms through simulations. Moreover, based on the time variant nature of the filter response of the proposed scheme, a pilot based channel estimation technique with controlled transmit power is developed and analysed through lower bound derivations. The proposed transceiver is shown to be a competitive solution for future wireless networks.

Item Type: Article
Subjects : Electronic Engineering
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Taheri, SUNSPECIFIEDUNSPECIFIED
Ghoraishi, MUNSPECIFIEDUNSPECIFIED
Xiao, PUNSPECIFIEDUNSPECIFIED
Zhang, Leilei.zhang@surrey.ac.ukUNSPECIFIED
Date : 20 February 2017
Funders : EPSRC, University of Surrey 5GIC
Identification Number : https://doi.org/10.1109/ACCESS.2017.2670922
Copyright Disclaimer : (c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Uncontrolled Keywords : channel estimation, circular convolution, equalization, fast convolution, filter bank, multicarrier systems, wireless communication
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 22 Feb 2017 19:13
Last Modified : 29 Jun 2017 12:16
URI: http://epubs.surrey.ac.uk/id/eprint/813613

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