Now showing items 31-40 of 58
Comparison of Availability Figures of Distributed Systems Using Multiple Redundancy Methods
Both hardware and software architectures have to meet the strict requirements for high availability. High availability requires considerations already in the design phase of the products. There are practical rules in system ...
Analysis of Access Transmission Network Upgrade in a Nationwide Mobile Network Modernization Project for EDGE Deployment
Statistical details of a nationwide access transmission network upgrade is presented in this paper with special focus on GSM network modernization for EDGE (Enhanced Data rates for GSM Evolution) deployment.
Microwave Transmission Node Optimization for Access Capacity Increase in Mobile Networks
Mature mobile networks heavily utilize the available access transmission (TRS) network (NW) capacities. Any new capacity demand may unavoidably lead to optimization. Modernization projects inherently offer the possibility ...
New Topology for Distributed Amplifiers in Hybrid Integrated Technology
In this paper alternative circuit topologies for hybrid integrated distributed amplifiers (DA) are analyzed and compared. Improvement in the gain-bandwidth product and decrease in the gain ripple using the proposed new ...
Transmission and Distortion of an Optical-Microwave Modulation Transducer
The optical-microwave modulation transducer is a circuit transforming the intensity modulation of a lightwave to the modulation of a microwave carrier. In this paper using the linear parametric model of the transducer ...
Investigation of Direct Modulated Laser Diodes
Characterisation of direct modulated laser diodes has an important role in the design of microwave fiber optic links. Modulation bandwidth and electrical reflection was measured in GHz frequency range and applied for bias ...
Availability Prediction of Telecommunication Application Servers Deployed on Cloud
Availability and reliability considerations are discussed in this paper with special focus on ‘cloud based’ Mobile Switching and Telecommunication Application Servers (MSS and TAS). Before the extensive deployment of cloud ...
Improved Optical-Microwave Mixing Process Utilizing High-Speed Photo-diodes
Mixing of lightwaves and microwaves offers new perspectives for the reception of subcarrier multiplexed (SCM) optical signals, Berceli (1). The received signal can be selected more easily and thus the receiver is significantly ...
New optomixer surpassing photodetection at microwaves
The properties of a new optomixing method are investigated and compared to the performance of the photodetection. This new method offers significantly higher output signal level compared to the direct photodetection.