… Hereafter, we adapt the variable power strategy to the spectrum-sharing system under …
the M-QAM based variable rate and power adaptation technique under said constraint. …

… In this section, we will develop a gradient based optimal power adaptation scheme and a
near optimal upper bound approach based on interior point method for the resource-efficient …

… efficiency (EE) and the spectral efficiency (SE) performance of multi-hop full duplex cognitive
relay networks (MH-FDCRNs) operating in the spectrum … improve the spectral efficiency (SE…

… and power adaptation to maximize the spectral efficiency while satisfying an average power
… We analyze the effect of the imperfect CSI on the spectral efficiency, under average power …

… analysis of the spectral efficiency and energy efficiency (SE-EE) tradeoff of OFDM systems
by taking into account the practical non-ideal effects of the power amplifiers (PAs). Optimal …

… Spectral efficiency and peak data rates may be increased further by deploying adaptive … /or
can utilize them best via link adaptation. The resulting spectral efficiency will increase with the …

… a power adaptation algorithm consisting of two steps: (i) establishing the optimum average
power … The trade-off between EE and spectral efficiency (SE) has been investigated in [5], …

… the spectral efficiency of the … efficiency while we guarantee a spectral efficiency above a
certain threshold by a good choice of k. For example, if we want to keep the spectral efficiency …

… power adaptation, constant transmit power, channel inversion with fixed rate, and truncated
channel inversion adaptation … Optimal power adaptation policy provides the highest capacity …

… In [4], cross-layer design for energy efficient wireless … both power and modulation order
adaptation, the EE-oriented design always consumes less energy than the traditional fixed power …