eprintid: 1346899
rev_number: 52
eprint_status: archive
userid: 608
dir: disk0/01/34/68/99
datestamp: 2012-05-09 09:04:15
lastmod: 2021-10-10 22:57:59
status_changed: 2018-12-13 09:17:32
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Clegg, RG
creators_name: Isam, S
creators_name: Kanaras, I
creators_name: Darwazeh, I
title: A practical system for improved efficiency in frequency division multiplexed wireless networks
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
keywords: intercarrier interference,
OFDM modulation,
radio networks,
radio receivers,
radio transmitters
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: Spectral efficiency is a key design issue for all wireless communication systems. Orthogonal frequency division multiplexing (OFDM) is a very well-known technique for efficient data transmission over many carriers overlapped in frequency. Recently, several studies have appeared that describe spectrally efficient variations of multi-carrier systems where the condition of orthogonality is dropped. Proposed techniques suffer from two weaknesses: firstly, the complexity of generating the signal is increased. Secondly, the signal detection is computationally demanding. Known methods suffer either unusably high complexity or high error rates because of the inter-carrier interference. This study addresses both problems by proposing new transmitter and receiver architectures whose design is based on using the simplification that a rational spectrally efficient frequency division multiplexing (SEFDM) system can be treated as a set of overlapped and interleaving OFDM systems. The efficacy of the proposed designs is shown through detailed simulation of systems with different signal types and carrier dimensions. The decoder is heuristic but in practice produces very good results that are close to the theoretical best performance in a variety of settings. The system is able to produce efficiency gains of up to 20% with negligible impact on the required signal-to-noise ratio.
date: 2012-03-06
date_type: published
publisher: INST ENGINEERING TECHNOLOGY-IET
official_url: https://doi.org/10.1049/iet-com.2011.0365
vfaculties: VENG
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_source: WoS-Lite
elements_id: 407329
doi: 10.1049/iet-com.2011.0365
lyricists_name: Clegg, Richard
lyricists_name: Darwazeh, Izzat
lyricists_id: RCLEG46
lyricists_id: IDARW65
actors_name: Nonhebel, Lucinda
actors_id: LNONH33
actors_role: owner
full_text_status: public
publication: IET Communications
volume: 6
number: 4
pagerange: 449-457
pages: 9
issn: 1751-8636
citation:        Clegg, RG;    Isam, S;    Kanaras, I;    Darwazeh, I;      (2012)    A practical system for improved efficiency in frequency division multiplexed wireless networks.                   IET Communications , 6  (4)   pp. 449-457.    10.1049/iet-com.2011.0365 <https://doi.org/10.1049/iet-com.2011.0365>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1346899/1/Darwazeh_AAM_1303.6859.pdf