Abstract
The fifth generation (5G) of mobile communications systems plans to support different types of applications, where each of these applications may have different requirements. For this reason, the main characteristic of 5G mobile communications systems is the flexibility of their architecture. An interesting proposal that can meet the requirements of these applications is the multi-carrier waveform Generalized Frequency Division Multiplexing (GFDM). However, due to its multi-carrier nature, this new waveform is highly sensitive to non-linear distortions arising mainly from high-power amplifiers (HPA). In addition, the wideband characteristics of multi-carrier signals result in frequency-dependent distortions, typically know as memory effects. This paper presents the development of closed-form analytical expressions that could be used to evaluate the impact of the distortions induced by non-linearities with memory in the out-of-band emissions and the bit error rate performance of GFDM-based systems. The resulting analytical expressions are general enough to obtain numerical results for different parameters of the GFDM-based system.
Highlights
The main feature in the evolution of mobile communication systems was the progressive increase of the transmission data rate
It is expected that the generation of mobile communication systems (5G systems) will have the flexibility of its architecture as main feature, mainly due to the fact that it is expected that diverse applications can be implemented over these communication systems
Unlike the previously mentioned studies, this paper presents the development of closed-form analytical expressions that could be used in the spectral and bit error rate performance analysis of Generalized Frequency Division Multiplexing (GFDM)-based systems operating over non-linear systems with memory
Summary
The main feature in the evolution of mobile communication systems was the progressive increase of the transmission data rate. Unlike the previously mentioned studies, this paper presents the development of closed-form analytical expressions that could be used in the spectral and bit error rate performance analysis of GFDM-based systems operating over non-linear systems with memory. These non-linear systems with memory, are defined using the Wiener-Hammerstein model. According to this block diagram, the m-th complex sub-symbol received on the n-th subcarrier in the k-th time interval is given by.
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