Title :
Spectrum sharing of OFDM signals for cognitive radios
Author :
Malon, Krzysztof ; Lopatka, Jerzy
Author_Institution :
Mil. Univ. of Technol., Warsaw, Poland
Abstract :
This paper presents methods of spectral shaping of OFDM signals to enable spectrum sharing with other transmissions. Proposed methods are based on carrier suppression algorithms, using both windowing technique and adaptation of modulating schemes on specific subcarriers. Moreover compatibility of OFDM signals generated by asynchronous transmitters, working in adjacent bandwidth is analyzed. Simulation model was created for these tests to enable observation of BER value when model parameters are changing.
Keywords :
OFDM modulation; cognitive radio; error statistics; radio transmitters; BER; OFDM signals; asynchronous transmitters; carrier suppression algorithms; cognitive radios; spectrum sharing; Bandwidth; Bit error rate; Modulation; OFDM; Signal to noise ratio; Transient analysis; Transmitters;
Conference_Titel :
Signal Processing and Communication Systems (ICSPCS), 2010 4th International Conference on
Conference_Location :
Gold Coast, QLD
Print_ISBN :
978-1-4244-7908-5
Electronic_ISBN :
978-1-4244-7906-1
DOI :
10.1109/ICSPCS.2010.5709745
