Nowadays, diffusion-based molecular communication (DBMC) is gaining recognition as a new physical layer option for nanoscale communication between bio-nanomachines, particularly for emerging applications in biomedical and healthcare. Although numerous studies have been conducted to evaluate and analyse DBMC system to date, investigation on multilayer DBMC channels still has had less attention i...

This paper looks into various ways of extending a Geometrically Based Single Bounce Channel Model into a Multiple Bounce one, the main motivation being to overcome some of the limitations of the former models. Three different strategies to implement the way rays are bounced are described and compared, a comparison between diffuse scattering and specular reflection being also investigated; as ex...

Effects of material and configuration of the internal wall on the performance of wideband channel are investigated by using the Finite Difference Time-Domain (FDTD) method. The indoor wideband channel characteristics, such as the path-loss, Root-Mean-Square (RMS) delay spread and number of the multipath components (MPCs), are presented. The simulated results demonstrate that the path-loss and M...

Given a social network of users with selection cost and fixed budget, the problem Budgeted Influence Maximization finds subset nodes ( known as seed nodes) for initial activation to maximize influence, such that total is within allocated budget. Existing solution methodologies this make two assumptions, which are not applicable real-life situations. First, an influenced node current time stamp ...

This paper presents results of experiments using a variety of antennas inside several buildings. Path loss models are presented for the 1.3 GHz and 4.0 GHz bands, and indicate little difference in indoor path loss throughout the low-microwave region. Results show that line-of-sight (LOS) channels offer significantly more cross-polarization discrimination than obstructed (OBS) channels. A profou...

A taxonomy of space-time signal processing is addressed in terms of architectural and algorithmic classiication, and the innuence of the propagation channel on the space-time processing. The architecture is classiied according to link structure, channel reuse and multiple access scheme. Algorithms are classiied into channel estimation methods, TDMA and CDMA receive algorithms and space-time tra...

In this paper, the estimation of doubly spread underwater acoustic (UWA) channels is investigated. The UWA channels are characterized by severe delay spread and significant Doppler effects, and can be well modeled as a multi-scale multi-lag (MSML) channel. Furthermore, exploiting the sparsity of UWA channels, MSML channel estimation can be transformed into the estimation of parameter sets (ampl...

Space-time coding for the flat fading, quasistatic MIMO wireless channel has received wide spread attention. While there has been some effort on code design for the frequency selective environments, the work has mostly been confined to multi-carrier modulation. This paper treats code design for a delay spread channel from a single carrier modulation perspective. We assume a coherent receiver an...