Now showing items 1-10 of 14
Access Transmission Network Upgrade in a Nationwide Mobile Network Modernization Project for EDGE Deployment
In this paper details of a nationwide fixed access transmission network upgrade is presented with special focus on GSM network modernization for EDGE (Enhanced Data rates for GSM Evolution) deployment.
Recent Trends in Reliable Access Networking for GSM Systems
Access networks for base stations in GSM systems are mainly based on microwave, millimeter-wave (MW/MMW) and fiber-optical technologies. This paper presents the recent trends of MW/MMW radio relay access networking with ...
Application of 58 GHz Band for GSM Access Networks in Hungary
GSM access networks are mainly based on microwave (μW), millimeter-wave (mmW) and fiberoptical links. This paper presents the actual trends of radio relay access networking with special focus on a newly opened 58 GHz ...
Microwave Harmonic Generation in Fiber-Optical Links
Optical transmission of microwave (MW) and millimeter-wave (MMW) signals have become an intensive research area in the last decade. There is a growing interest in optical processing of MW signals [1, 2], phased array ...
Fixed MW Access Network Design Using Interference Matrices
Density of microwave and millimeter-wave radio relay networks increased with unexpected speed in the last decade. For long time rain attenuation and thermal noise limitation were in the main focus of fixed radiolink design. ...
Optical Upconversion of 100 Mb/s BPSK Microwave Subcarrier Signals Using an Unbalanced Mach-Zehnder Interferometer
A new technique for remote upconversion of a 100 Mb/s BPSK microwave subcarrier signal is proposed and demonstrated. It is based on the insertion of an unbalanced Mach-Zehnder interferometer in a microwave fiber-optic link.
Investigations in Microwave Optical Links - Accent on QAM
Various-depth field descriptions and their use are summarized. Effects in optical links are being investigated being of particular importance if QAM microwave signals are transmitted. In this framework modulator-induced ...
Microwave Network Analysis Extended to Optical Systems
Microwave (MW) network analysis of optical circuits and systems is discussed in the paper. MW responses of some basic optical structures are shown in frequency and time domain. Some fundamental differences between network ...
Mobile Network Upgrade for EDGE in Hungary
Early GSM networks are getting older than a decade. First generation mobile systems cannot fully satisfy actual user expectations. New services like WAP, mobile internet, video streaming, etc. require higher capacity and ...