Over the last few years, network MIMO or distributed MIMO has gained enormous interest in research and meanwhile is a candidate for future communication systems. However, existing techniques handling the multi-user interference, e.g., linear preequalization (LPE) or TomlinsonHarashima precoding (THP), assume full cooperation between the base stations. This might cause significant signaling over...

The issue of bandwidth scaling has always caused some confusion for channels subject t.o additive white Gaussian noise plus multipath fading. On the one hand, there is an old result (see, for example, section 8.6 of [I]) saying that the capacity of the channel (under 2 power constraint but no bandwidth constraint) is the same as the infinite bandwidth capacity of the non-fading additive noise c...

Without consideration of the minimum signal-tointerference-plus-noise ratio (SINR) and frequent information exchange, traditional power control algorithms can not always satisfy SINR requirements of secondary users (SUs) and primary users (PUs) in cognitive radio networks. In this paper, a distributed power control problem for maximizing total throughput of SUs is studied subject to the SINR co...

This paper explores a spectrally efficient, variable rate transmission scheme under a service outage constraint for a block fading channel model. The service outage constraint is motivated by real time variable rate applications. In a service outage, the transmission code rate is below a given basic rate and may in fact be zero. Unlike an information outage in the capacity versus outage problem...

In this paper we investigate the linear sampling method by focusing on energy conservation inside a lossless background, in the case of a three-dimensional, impenetrable and acoustic scattering set-up. We analyze, from both a numerical and a theoretical viewpoint, how average power fluxes are carried throughout the host medium by the flow tubes of radiating fields. As a result, the far-field eq...

Manuscript Received 8-August-2012 and revised 5-October-2012 ISSN: 2322-3936 Accepted on 1November-2012 Abstract— This paper concerns two-hop communication over relayassisted Block fading channel. It is assumed there is not a direct link between the transmitter and the affiliated destination and the communication occurs in two hops through the use of a relay, where the amplify and forward (AF) ...

This paper investigates the asymptotic expansion for the size of block codes defined for the additive white Gaussian noise (AWGN) channel with feedback under the following setting: A peak power constraint is imposed on every transmitted codeword, and the average error probability of decoding the transmitted message is non-vanishing as the blocklength increases. It is well-known that the presenc...

An algorithm is presented for exactly solving (in fact, counting) the number of maximum weight satisfying assignments of a 2-Cnf formula. The worst case running time of O(1.246) for formulas with n variables improves on the previous bound of O(1.256) by Dahllöf, Jonsson, and Wahlström. The algorithm uses only polynomial space. As a consequence we get an O(1.246) time algorithm for counting maxi...

E-health systems are the information and communication systems deployed to improve quality and efficiency of public health services. Within E-health systems, wearable sensors are deployed to monitor physiology information not only in hospitals, but also in our daily lives under all types of activities; wireless body area networks (WBANs) are adopted to transmit physiology information to smartph...