Category: OMNET PROJECT IDEAS

A fully operational 4G long-term evolution (LTE) base station is tested in a reverberation chamber to analyze its performance in the presence of a multipath environment, typical of wireless and vehicular communications. Transmission quality parameters are measured ranging from the empty chamber situation (very rich multipath channel) to a very high loading condition to mitigate…

In this paper, the measurements of 2 × 2 MIMO channel were performed at 2.6 GHz with 20 MHz bandwidth along the Harbin-Dalian passenger dedicated railway line. To improve the accuracy of multipath searching, we propose a multipath components (MCPs) extraction method based on this measurement, using the statistical properties of the data to reduce…

This paper considers infrastructure to vehicle communications using Advanced-LTE. The paper compares the downlink throughput performance experienced by mobile users in an urban-macro-cell in cases of 2D and 3D channel models, where the impact of the 3D component on MIMO performance is investigated. Recently there has been strong interest in extending the MIMO processing from…

This paper introduces a novel formalism to improve the performance of an off-body system by deploying multiple ultra wideband (UWB) antennas, positioned strategically on the body. A methodology is presented for determining the optimal positions of UWB antennas on the body, necessary to provide a reliable multiband orthogonal frequency division multiplexing (MB-OFDM) UWB diversity antenna system operating in…

Antennas in Body Area Networks (BAN) should be designed according to the link they are expected to form. In most of the systems, an on-body gateway collects data frames from other on-body sensors and relays them to an off-body gateway, realizing two different modes of operation, on-body and off-body. For such a device, the on-body link and the off-body link have different radiation pattern requirements.…

The electrical properties of biological cells, tissues, and organs studied in electrophysiology not only provide information about the normal/abnormal activities of human bodies but also provide a means to directly restore, repair, replace, or recreate physiological functions in humans to improve quality of life. For example, cardiac pacemakers, implanted in millions of patients, deliver electrical pulses into…

By using device-to-device (D2D) communication, opportunistic networks promise to fill the gaps of thenetworking infrastructure in remote areas, to enable communication in emergency situations, and to inspire new applications. Yet, to become feasible in practice and accepted by users, it is crucial that the energy costs of D2D connections are small and shared fairly. Fairness, in particular, is a…

Despite the large body of theoretical research available on compression algorithms for wireless sensornetworks (WSNs), only recently have researchers started to design and analyze practical distributed compression techniques. Also, approaches belonging to different fields such as signal processing (e.g., discrete Fourier transforms and compressive sensing) or information theory (e.g., distributed source coding) and networking are seldom evaluated against one another. In the…

Improving spectral efficiency as well as link reliability has become imperative in nowadays wireless communications. To achieve this purpose, combining Multiple Input Multiple Output (MIMO) architecture with Orthogonal Frequency Division Multiplexing (OFDM) technique is a widely accepted solution and has been implemented in various communication standards. Channel estimation is a critical processing step which is…

In this paper, we introduce an approach for application-aware resource block scheduling of elastic and inelastic adaptive real-time traffic in fourth generation Long Term Evolution (LTE) systems. The users are assigned to resource blocks. A transmission may use multiple resource blocks scheduled over frequency and time. In our model, we use logarithmic and sigmoidal-like utility…