Title
Reduction of OFDM out-of-band emissions with a multi-step active interference cancelation technique
Abstract
Adjacent channel interference (ACI) between OFDM signals severely impacts system performance and spectrum efficiency. To eliminate ACI, Active Interference Cancelation (AIC) techniques using additional modulated OFDM sub-carriers can be adopted. This paper describes an AIC technique based on multi-step calculation of clipped canceling symbols. The algorithm has simple implementation and allows to easily control the extra power required for canceling symbols. To avoid bandwidth expansion, non-orthogonal canceling sub-carriers (E-AIC) can be easily incorporated in the procedure. The achievable reduction of the OFDM spectrum tail power has been evaluated analytically and by simulation.
Year
DOI
Venue
2014
10.1109/WCNC.2014.6952159
Wireless Communications and Networking Conference
Keywords
Field
DocType
OFDM modulation,adjacent channel interference,interference suppression,radio spectrum management,ACI,AIC techniques,OFDM out-of-band emissions,OFDM spectrum tail power,active interference cancelation techniques,adjacent channel interference,clipped canceling symbols,multistep active interference cancelation technique,nonorthogonal canceling subcarriers,spectrum efficiency
Telecommunications,Bandwidth expansion,Out-of-band management,Computer science,Adjacent-channel interference,Real-time computing,Electronic engineering,Spectral efficiency,Interference cancelation,Orthogonal frequency-division multiplexing
Conference
ISSN
Citations 
PageRank 
1525-3511
0
0.34
References 
Authors
11
3
Name
Order
Citations
PageRank
Romeo Giuliano126345.48
Franco Mazzenga215335.12
Pierpaolo Loreti39318.75