The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A new hybrid Analog-Digital (hybrid A-D) precoder is proposed for multi-antenna base stations in massive Multiple-Input Multiple-Output (MIMO) which allows a trade-off between the number of required RF-chains and the update rate of the analog part. It is shown that the number of RF-chains can be reduced even below the number of eigenmodes of the channel, thereby closing the gap between the standard...
This article describes promising recent progress in the area of massive antenna array architectures with low front-end hardware complexity. The presented technology enables the design and implementation of antenna arrays with large numbers of elements, while obtaining significant front-end hardware savings as compared to the conventional solutions. This newly appearing design approach could be used...
For wireless high-data-rate applications, channel sounding, and radar sensors, the unlicensed frequency band around 60 GHz is of relevant commercial interest. Currently, there is enormous progress in the field of integrating 60 GHz technology in compact systems using multilayer technology and reducing costs for mass production. For full channel characterization, but also for consumer applications,...
Linear model-based test and diagnosis (MbT&D) has been successfully applied to single-block modules like digital-to-analog converters (DACs) with a static non-linear transfer characteristic. For multi-block modules, a diagnosis methodology is needed that can deal with cascades of several linear and nonlinear blocks. In contrast to non-linear methods, linear MbT&D methods only require matrix...
Linear and non-linear Model-based Testing (MbT) has been developed in the past for mixed-signal devices. For Digital- to-Analog Converters (DACs) with a static nonlinear transfer characteristic, linear MbT has even been adopted in production test. The core principle of MbT is to parameterize a model of the on-chip error sources based on the measurements that are performed on the Device Under Test...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.