Distributed base station architectures represent the new trend that operators follow in order to resolve cost, performance and efficiency challenges when deploying 4G networks. Main components of such architectures are multimode radios capable of operating according to GSM, HSPA, WiMAX and LTE standards, known as remote radio heads (RRH). The key feature of remote radio heads is the extended so...

Digital predistortion (DPD) based on Volterra models is commonly employed to counteract the nonlinear distortion of power amplifiers. However, when concurrent dual-band signals are transmitted, 2-D DPD required. In this work, upgrading a standard model proposed and justified using multinomial theorem. The linearization performance current proposal has been compared unextended model. Fifth gener...

In this article, we present a new method to reduce the model adaptation complexity for digital predistortion (DPD) of radio frequency (RF) power amplifiers (PAs) under varying operating conditions, using pretrained transformation coefficients. Experimental studies show that PA behavior variations can be effectively tracked small number “transformed” coefficients, even with large deviations in i...

In this article, we propose a novel technique of digital predistortion (DPD) for dual-band power amplifiers (PAs) based on the periodically nonuniform sampling (PNS) theory. contrast to conventional DPD (2-D-DPD) models, proposed sampled (PNS-DPD) has only single input, which can largely reduce model complexity. We fold two stimuli with aliasing and feed them simple single-band model. The desir...