Linearization technologies that can be used for linearizing RoF transmission are reviewed. Three main linearization methods, i.e. electrical analog linearization, optical linearization, and electrical digital linearization are presented and compared. Analog linearization can be achieved using analog predistortion circuits, and can be used for suppression of odd order nonlinear distortion compon...

Scope This Recommendation provides an introduction to propagation-related aspects of the design and operation of digital radio-relay systems, drawing on information from Radiocommunication Study Group 3 texts and measurements conducted by administrations. Annex 1 explains the role of multipath fading as the dominant propagation factor for digital radio-relay systems operating at frequencies bel...

Distributed base station architectures represent the new trend that operators follow in order to resolve cost, performance and efficiency challenges when deploying 4G networks. Main components of such architectures are multimode radios capable of operating according to GSM, HSPA, WiMAX and LTE standards, known as remote radio heads (RRH). The key feature of remote radio heads is the extended so...

In wireless communications, particularly the military space, software-defined radio (SDR) is the goal. The basic concept of SDR is to position the digital-to-analog separation as close as possible to the antenna. This is accomplished by implementing many functions traditionally performed by analog circuits using reconfigurable digital circuits. Successfully implemented, this can deliver an obso...

Radio spectrum has increasingly become a strategic scarce resource in the digital world. The demand for pervasive wireless connectivity has exploded driven by smart devices and the consumption of video and Internet on the move as well as innovative services in various sectors such as transport, healthcare or energy. The Digital Agenda for Europe (DAE) and the Radio Spectrum Policy Programme (RS...

This paper proposes a Monte Carlo based statistical simulation technique in place of the difficult mathematical analysis to obtain an estimate of the error probability of a log-normal Raleigh faded channel in a digital wireless communication network taking into account the users random positions and the modulation type. The results obtained are consistent with those in the literature. Index Ter...

This resume describes the realization of a fully digital stereo FM Transmitter with RDS capability (Radio Data System), based on software radio architectures using FPGAs. This system can be remotely controlled by means of a WEB interface.

Software radio architecture can support multiple standards running by reconfigurable software programs on the backend digital signal processor (DSP) With the advance in digital signal processing and digital communication techniques, software defined radio (SDR) becomes a reality. For an SDR with multi-protocol and/or multi-band capabilities, sample rate conversion (SRC) is an essential element ...

ADAPTIVE SPACE-TIME PROCESSING FOR DIGITAL MOBILE RADIO COMMUNICATION SYSTEMS