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In this paper, we consider a multi-antenna technique employed in cognitive radio networks for interference cancellation. A secondary user is equipped with a multi-antenna which will direct its available power in a direction that the interference to the primary user will be canceled. With this technique, the secondary user could transmit at anytime without generating harmful interference to the primary...
This paper characterizes intersymbol interference (ISI) in a unicast molecular communication between a pair of nanomachines in a nanonetwork. Correspondingly, a transmission-controlled approach based on reduced pulse-width transmission has been proposed in order to mitigate ISI. Binary amplitude modulation has been assumed for the concentration-encoded signaling. Characteristics of interference signal...
In this paper we have investigated into a multi-level amplitude modulation (M-AM) scheme for concentration-encoded unicast molecular communication between a transmitting nanomachine (TN) and a receiving nanomachine (RN) in a nanonetwork. The performance of M-AM scheme has been evaluated on the basis of signal strength in the form of average loss of concentration of received molecules at the location...
It is developed a case study, unifying theoretical and practical aspects, concerning planning and implementation of orthogonal frequency division multiplexing (OFDM) point-to-multipoint (PtMp) links at Industrial, Scientific and Medical (ISM) 5 GHz band. The proposed design methodology is validated using analytical results and field measurements.
This paper presents a study on interference caused by Secondary Users (SUs) due to miss-detection in a cognitive network over Nakagami fading channels. Interference analysis shows that aggregate interference power from SUs can be closely approximated as a Gamma random variable. The probabilistic properties of aggregate interference power are investigated for non-cooperative, OR1 and Maximum Likelihood...
We address the problem of minimum average packet delay of Multi-hop Wireless Networks (MWN) which uses network coding. Our objective is to allocate capacities to different wireless nodes in a way that the average packet delay in the network is minimized under the assumption that the network topology, the traffic matrix in the network, and routing are given. Exploiting queueing theory as well as wireless...
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