… any adaptation of the transmitted signal spectra at the cognitive nodes. To this end, we study
appropriate transmit power allocation (TPA) strategies among the cognitive relays. We first …

… allowable transmission power at the secondary transmitter. Ideally, one would determine
the optimal antenna selection criterion and the secondary transmission power allocation …

… the power allocation problem in energy efficiency transmission for tracking the time-varying
target SINR and minimising the transmit power in CRNs by taking into account the power …

… rate loss of PU due to the secondary transmission is used to protect PU. Under … transmit
power constraint, the optimal power allocation strategy for the SU to maximize its transmission …

… and energy conservation, we consider the power allocation problem to maximize the energy
… -way cognitive transmission and the efficiency of the proposed power allocation scheme are …

… influence of different transmitting power. In the … transmission scheme of cognitive power
allocation in mmWave wiretap networks, that is, the transmitter first dynamically allocates power …

… Thus, we derive the minimal transmitted power of the PU to guarantee its rate threshold in
IA… with specific transmitted power. • When SNR is low, all the transmitted power may be allo…

… To enhance the performance of secondary transmission, optimal power allocation is …
number of secondary transmit antennas is specified based on the optimal power allocation for an …

… average transmit and interference power … power allocation under imperfect spectrum sensing
for the two schemes and discuss the effect of the average transmit and interference power …

… ) cognitive radio system is analytically studied. In particular, the secondary transmitter operates
in a spatial multiplexing transmission … secondary transmission, optimal power allocation is …