We derive the mutual information (MI) of the wireless links in a buffer-aided full-duplex (FD) multiple-input multiple-output (MIMO) relaying network. The FD relay still suffers from residual selfinterference (RSI), after the application of self-interference mitigation techniques. We investigate both cases of the slow-RSI channel, where the RSI is fixed over the entire codeword, and the fast-RS...

Spatial diversity is an inherent nature of wireless communications. This nature can be exploited to make communications more reliable by Multiple-Input-Multiple-Output (MIMO). However the use of multiple co-located antennas is constrained by the dimensions of modern devices. To overcome this drawback cooperative relaying shares antennas between different network nodes thus realizing a Virtual a...

Non-orthogonal multiple access (NOMA) is a promising technology to improve spectrum utilization effectively for underwater optical wireless communications (UOWC). To exploit the benefits of NOMA in turbulent environment, cooperative transmission has been introduced NOMA–UOWC network. The existing studies on suggest that relay selection and power optimization are main factors affecting system pe...

This paper presents analytical solutions for the performance of a single relay aided amplify-and-forward (AF) direct sequence code division multiple access (DS-CDMA) system over Rayleigh/Nakagami-m fading channels. The source-destination channel is assumed to be Rayleigh distributed while relay-destination link is Nakagami-m distributed. First, a cumulative distribution function (CDF) is derive...

A design methodology based on the minimum error proba8 bility (MEP) framework is proposed for a nonregenerative multiple-input 9 multiple-output relay-aided system. We consider the associated cognitive, 10 the parallel, and the multihop source–relay-destination link design based 11 on this MEP framework, including the transmit precoder, the amplify-and12 forward relay matrix, and the receiver e...

In this paper, we investigate a mobile relaying system assisted by an unmanned aerial vehicle (UAV) with finite size of the buffer. Under buffer limit and delay constraints at UAV relay, consider dual-hop mixed free-space optical/radio frequency (FSO/RF) (i.e., source-to-relay relay-to-destination links employ FSO RF links, respectively). Taking imbalance in transmission rate between into consi...