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In the IST (Information Society Technologies) project FITNESS: Fourth-generation Intelligent Transparent Networks Enhanced through Space-time Systems, the issues of re-configurability with Multiple Receive Multiple Transmit (MTMR) antenna systems in various channel, interference, traffic and user requirement conditions and transparent operation across(More)
This deliverable explores the need for a Dynamic Channel Allocation (DCA) mechanism in WAND-like systems. In the context of this study, two main approaches are presented: a centralised and a distributed one. The deliverable describes the basic characteristics of both approaches from which possible advantages and disadvantages are extracted. For each(More)
Quadrature direct-conversion transceivers suffer from the imbalance of the I and Q paths. Using a novel complex low-pass filter topology instead of a pair of real low-pass filters can reduce this imperfection. Detailed analytical and numerical analysis both show that the proposed technique is significantly more robust to circuit imperfections than the(More)
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