Open AccessRealistic hardware imperfections in communication system under Gaussian approximation model and generalised Gaussian model
Author(s) -
ElMashed Mohamed G.
Publication year - 2020
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2019.0725
Subject(s) - gaussian , computer science , transmitter , nakagami distribution , transmission (telecommunications) , fading , communications system , interference (communication) , gaussian noise , outage probability , electronic engineering , algorithm , topology (electrical circuits) , telecommunications , decoding methods , electrical engineering , physics , engineering , channel (broadcasting) , quantum mechanics
Studying hardware imperfections in the communication system is very important. It can cause in‐phase/quadrature (I/Q) imbalance and phase noise problems. This study proposed a realistic communication system under hardware imperfections and self‐interference. The impact of hardware imperfections at the transmitter, at the relays and the receiver is analysed for two and three transmission hops. A realistic Gaussian approximation model and generalised Gaussian model are proposed to show its impact on system performance. Assuming that the channels are subjected to Nakagami‐ m fading. A closed‐form expression for the outage probability is mathematically derived. The comparison between the proposed system and other systems with distortions and I/Q imbalance is provided. Results demonstrate that the performance of realistic communication system is more degraded, especially at higher transmission hops.