Abstract

Abstract
An adaptive amplifier scheme is presented which allows for estimating and correcting the behaviour of a non-linear amplifier, in order to improve its performance for RF communication. This is attained configuring its operating mode in one of estimation of the amplifier's non-linearity, automatic gain control, and correction of eye diagrams' opening. The theory behind these three operating modes is explained first using simulation results obtained with a behavioural model. Experimental results, obtained with a proof-of-concept prototype, which validate the functional correctness in these three modes are also presented. Issues concerning implementation requirements and limitations are discussed.

Abstract
A test technique for capacitive MEMS accelerometers and electrostatic microactuators, based on the measurement of pull-in voltages and resonance frequency, is described. Using this combination of measurements, one can estimate process-induced variations in the device layout dimensions as well as deviations from nominal value in material properties, which can be used either for testing or device diagnostics purposes. Measurements performed on fabricated devices confirm that the 250nm overetch observed on SEM images can be correctly estimated using the proposed technique.

Abstract
This paper presents a network architecture for provisioning communal Internet access services to residential customers. The advantages of adopting the proposed architecture are enumerated both for Internet Service Providers (ISP) and residential clients. The paper presents also the CommGate, a gateway specially developed for managing the network traffic through multiple communal accesses,. Tests were carried out simulating several community scenarios with different number of customers and generating different traffic loads. The results allow us to conclude about the performance of the CommGate and the benefits of the proposed architecture.

Abstract
The residential networking market is evolving and new operating paradigms are emerging. The ubiquitous use of Small Office/Home Office (SOHO) networks is increasing the demands on SOHO routers. These economical network elements, however, are too simple to deal with the high demands of their users, especially in residential settings where P2P, video and VoIP traffic is becoming predominant. This paper presents a communal gateway CommGate - that enables individuals in a building to share multiple communal Internet links and service facilities. The paper presents also some tests simulating several user communities with different number of customers characterized by different profiles (cf. Gold, Silver and Bronze) and generating different traffic loads. These tests illustrate the benefits of using the CommGate and the usefulness of the proposed communal architecture.

Abstract