In this paper, an intelligent reflecting surface (IRS)-aided two-way decode-and-forward (DF) relay wireless network is considered, where two users exchange information via IRS and DF relay. To enhance the sum rate performance, three power allocation (PA) strategies are proposed. Firstly, a maximizing method based on successive convex approximation (Max-SR-SCA) proposed to jointly optimize PA fa...

Owing to its high spectrum efficiency (SE), two-way relaying has aroused tremendous research interests. In this paper, the spectrum-energy (SE-EE) trade-off in decode-and-forward (DF) multi-relay networks is studied by considering non-ideal power amplifiers and non-negligible circuit. Firstly, we consider scenario of several relay nodes. To achieve better performance, node with highest energy (...

The secrecy performance is analyzed for a two-hop mixed radio frequency (RF)/underwater wireless optical communication (UWOC) system using decode-and-forward (DF) relay. All RF and UWOC links are modeled by the $\alpha -\mu $ exponent...