Table 1 List of abbreviations
From: Ten years of research in spectrum sensing and sharing in cognitive radio
AF | Amplify-and-forward |
|---|---|
AWGN | Additive white Gaussian noise |
BS | Base station |
CAF | Cyclic autocorrelation function |
CR | Cognitive radio |
CSD | Cyclic spectrum density |
CSS | Cooperative spectrum sensing |
DoD | Department of defense |
DR | Detect-and-relay |
ECC | Electronic Communications Committee |
FCC | Federal Communications Commission |
GLRT | Generalized likelihood ratio test |
HDD | Hard-decision-based detection |
IPC | Interference powers constraint |
LRT | Likelihood ratio test |
LTE-A | LTE-Advanced |
MIMO | Multiple-input multiple-output |
MLE | Maximum likelihood estimate |
MME | Maximum-minimum eigenvalue |
MMSE | Minimum mean-square-error |
NE | Nash equilibrium |
NP | Neyman-Pearson |
Ofcom | Office of Communications |
OFDMA | Orthogonal frequency division multiple access |
OPC | Outage probability constraint |
OSA | Opportunistic spectrum access |
OSO | Opportunistic spatial orthogonalization |
Probability density function | |
PSD | Power spectral density |
PU | Primary user |
QAM | Quadrature amplitude modulation |
QoS | Quality of service |
QCQP | Quadratically constrained quadratic problem |
RF | Radio-front |
RLC | Rate loss constraint |
ROC | Receiver operating characteristics |
SBS | Secondary base station |
SDD | Soft-decision-based detection |
SDR | Semidefinite relaxation |
SFD | Spectral feature detector |
SH | Spectrum holes |
SINR | Signal-to-interference-plus-noise ratio |
SNR | Signal-to-noise ratio |
SPRT | Sequential probability ratio test |
SU | Secondary user |
TPA | Transmit power allocation |
TPC | Transmit power constraint |
XG | Next generation |