Title :
GFDM Interference Cancellation for Flexible Cognitive Radio PHY Design
Author :
Datta, R. ; Michailow, N. ; Lentmaier, M. ; Fettweis, G.
Author_Institution :
Dept. of Mobile Commun. Syst., Tech. Univ. Dresden, Dresden, Germany
Abstract :
Generalized frequency division multiplexing (GFDM) is a new digital multicarrier concept. The GFDM modulation technique is extremely attractive for applications in a fragmented spectrum, as it provides the flexibility to choose a pulse shape and thus allows reduction of the out-of-band leakage of opportunistic cognitive radio signals into incumbent frequency space. However, this degree of freedom is obtained at the cost of loss of subcarrier orthogonality, which leads to self-inter-carrier-interference. This paper will explain how self-interference can be reduced by a basic and a double-sided serial interference cancellation technique and show that these interference cancellation techniques improve the GFDM bit error rate to match the theoretical performance of the well studied orthogonal frequency division multiplexing (OFDM).
Keywords :
OFDM modulation; cognitive radio; error statistics; frequency division multiplexing; interference suppression; radio spectrum management; radiofrequency interference; subcarrier multiplexing; GFDM bit error rate; GFDM interference cancellation; GFDM modulation technique; digital multicarrier concept; double-sided serial interference cancellation technique; flexible cognitive radio PHY design; fragmented spectrum; incumbent frequency space; opportunistic cognitive radio signals; orthogonal frequency division multiplexing; out-of-band GFDM leakage; pulse shape; self-intercarrier interference; subcarrier orthogonality; Bit error rate; Complexity theory; Interference cancellation; OFDM; Pulse shaping methods; Silicon carbide;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
DOI :
10.1109/VTCFall.2012.6399031