Zoran Zvonar

LTE Part I: Core network

Part I of this Feature Topic covers several key aspects of the evolved packet system (EPS) architecture.

LTE part II: Radio access

Part II of this Feature Topic provides insight into the inner workings of the long term evolution (LTE) air interface.Part II of this Feature Topic provides insight into the inner workings of the long term evolution (LTE) air interface.

Radio communications: components, systems, and networks [Series Editorial]

Radio communications and networks continue to be one of the most exciting areas of science, technology, and business. Innovations continue to provide society with capabilities we could not have dreamed possible just a decade or two ago. The news is replete with examples of the application of new wireless technology, from entertainment (e.g., video clips and games) to unexpected uses such as messages to supporters from political candidates on the campaign trail. Novel technology, enlightened wireless and telecommunication policies, and exciting (and profitable) applications can be expected to continue in a cycle that is highly beneficial to society. In this issue we offer some further ideas that we hope will continue to support this cycle.

Introduction to the Issue on DSP Techiques for RF/Analog Circuit Impairments

The objective of this interdisciplinary special issue is to highlight the important role of digital signal processing techniques in understanding and mitigating RF/analog circuit impairments. The issue presents 15 papers .

Digital Compensation of Tx/Rx I/Q Imbalance in TD-SCDMA Systems

TD-SCDMA (Time Division- Synchronous CDMA) systems show performance degradation due to I/Q imbalance resulting from direct-conversion transmitters and receivers. In overall system analysis, it is important to consider both transmitter and receiver I/Q imbalances to account for low cost base stations (BSs) such as femtocells. Two approaches are considered in this paper. The first one is a purely time-domain approach based on widely linear minimum mean square error estimation (WL-MMSE). The second one is a frequency-domain approach with reduced computational complexity. Simulation studies are performed and comparison results presented.

Radio communications: components, systems and networks

This is an introduction to the special section of papers from DySPAN 2007 - the IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks that was held on April 17-20, 2007 in Dublin, Ireland.

LTE part II: Radio access [Guest Editorial]

Part II of this Feature Topic provides insight into the inner workings of the long term evolution (LTE) air interface.Part II of this Feature Topic provides insight into the inner workings of the long term evolution (LTE) air interface.