43 search results - page 9 / 9 » Spectral Efficiency of Cognitive Radio Systems |
CORR
2010
Springer
13 years 10 months ago
2010
Springer
Adaptive orthogonal frequency division multiple access (OFDMA) has recently been recognized as a promising technique for providing high spectral efficiency in future broadband wire...
CORR
2010
Springer
13 years 10 months ago
2010
Springer
Adaptive Demodulation (ADM) is a newly proposed rate-adaptive system which operates without requiring Channel State Information (CSI) at the transmitter (unlike adaptive modulatio...
GLOBECOM
2010
IEEE
13 years 7 months ago
2010
IEEE
The major requirement for Cognitive Radio (CR) based opportunistic spectrum re-usage is reliable protection of the primary communication. This calls for a reliable detection of the...