Title :
Improved prefix for OFDM-based cognitive radios
Author_Institution :
Dept. of Eng., Indiana Univ., Fort Wayne, IN, USA
Abstract :
In OFDM-based cognitive radios several carriers are left unused to enable coexistence with other wireless systems. Proposed is a prefix design technique that depends on the wireless channel and on the set of unused carriers. It is shown that in this way considerable performance improvement can be obtained.
Keywords :
OFDM modulation; cognitive radio; wireless channels; OFDM based cognitive radios; prefix design technique; wireless channel;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.3167
