This paper analyses an alternative traffic queuing model for mobile communications systems. According to the proposed model, the queue of handover calls is separated to each of the used transceivers of a base transceiver station that covers a particular area. Fixed Channel Assignment and TDMA are considered, while the proposed technique is compared to the classic queuing model. The comparison r...

Transceiver adaptation is essential within an optical network to make effective use of the physical layer resources. We investigate the types of adaptation, the granularity of control and its effect on network data throughput.

Signal impairments caused by the relative characteristic differences and crosstalk between electrical in-phase (I) lanes quadrature (Q) are some of main obstacles to development 100-Gbaud-class high-symbol-rate transceivers. To address such IQ impairments, we propose a method for enabling fully frequency-resolved four-dimensional (4D) characterization even in presence arbitrary across four pola...

An understanding of the interaction between the channel and the signal space is key to reliable communication. Multipath fading channels exhibit inherent diversity that can be exploited via appropriate signaling and reception. In this paper, we develop a virtual MIMO framework for code division multiple access (CDMA) systems for maximally exploiting channel diversity at both the transmitter and...

Impulse Radio Ultra-wideband (IR-UWB) is a modern radio technology that uses modulated pulses to transmit information and works at extremely low energy levels. It is popularly used in short-range, low power and low cost communications such as vehicular ad-hoc networks (VANETs), RFIDs and wireless sensor networks (WSN). This paper presents the design and implementation of an IR-UWB Transceiver u...

In order to support experimentation with fullduplex (FD) wireless, we recently integrated an open-access FD transceiver in the ORBIT testbed [1]. In this report, we present the design and implementation of the FD transceiver and interfaces, and provide examples and guidelines for experimentation. In particular, an ORBIT node with a National Instruments (NI)/Ettus Research Universal Software Rad...