Green wireless communications: A power amplifier perspective

초록

In this paper, we survey two essential and practical characteristics of radio-frequency power amplifier (PA), namely, linearity and efficiency. Nonlinear amplification yields significant distortion of the transmit signals and strong interference for cochannel users. Imperfect efficiency of the PA causes an overhead of the systems resulting in energy efficiency (EE) degradation. Therefore, the linearity and efficiency of the PA should be precisely characterized in the system design.

키워드