Space Codes for MIMO Optical Wireless Communications: Error Performance Criterion and Code Construction Abstract– In the first place, consider a multiple-input-multipleoutput optical wireless communication (MIMO-OWC) system in the presence of log-normal fading. In this scenario, a general criterion for the design of full-diversity space code (FDSC) with the maximum likelihood detector is developed. This criterion…
Space?Time Network Coding With Antenna Selection Abstract? we investigate the space?time network coding (STNC) with antenna selection (AS) in the cooperative multiple-input?multiple-output (MIMO) network, where U users communicate with a common destination D with the aid of R decode-and-forward (DF) relays. In this network, the best transmit/receive antenna pair with the highest signal-to-noise (SNR) ratio…
Sparsity-Aware Affine Projection Adaptive Algorithms for System Identification Abstract-In the first place, propose adaptive algorithms for system identification of sparse systems. We introduce a L1- norm penalty to improve the performance of affine projection algorithms. This strategy results in two new algorithms, the zeroattracting APA (ZA-APA) and the reweighted zero-attracting AP (RZA-APA). The ZA-APA is…
Spectrum Sensing Performance in Cognitive Radio Networks With Multiple Primary Users Abstract? Radio spectrum sensing (SS) has been an active topic of research over the past years due to its importance to cognitive radio (CR) systems. However, in CR networks (CRNs) with multiple primary users (PUs), the secondary users (SUs) can often detect PUs that…
Spectrum-Aware Mobility Management in Cognitive Radio Cellular Networks Abstract?Cognitive radio (CR) networks have been proposed as a solution to both spectrum inefficiency and spectrum scarcity problems. However, they face several challenges based on the fluctuating nature of the available spectrum, making it more difficult to support seamless communications, especially in CR cellular networks.< Final Year...
Sports Club Management Abstract?Abstract Managing an amateur sporting club is most often time consuming and tedious. Netball, Cricket, football, hockey, basketball to name but a few, present the very same challenges.Simple but efficient systems to handle administration and day to day running of any club are essential to avoid draining valuable resources, both time and…
Stochastic Geometry Study on Device-to-Device Communication as a Disaster Relief Solution Abstract?Abstract With the unprecedented new capabilities introduced by modern broadband wireless networks, public safety (PS) agencies are increasingly depending on such networks for their mission-critical communications. One of the key enablers for this adoption is the device-to-device (D2D) communications, where mobile devices can connect…
Stochastic-Geometry-Based Performance Analysis of Delayed Mobile Data Offloading With Mobility Prediction in Dense IEEE 802.11 Networks Abstract– Mobile data offloading through Wi-Fi is a promising solution to alleviate the explosive data increase in cellular network. While extensive attempts have been made at mobile data offloading, previous studies have rarely paid attention to network characteristics (e.g….
Subcarrier and Power Allocation for OFDMA-Based Cognitive Radio Systems With Joint Overlay and Underlay Spectrum Access Mechanism Abstract?Subcarrier and Power Allocation for OFDMA-Based Cognitive Radio Systems With Joint Overlay and Underlay Spectrum Access Mechanism.In this paper, we study a subcarrier-and-power-allocation problem for orthogonal-frequency-division multiple-access (OFDMA)-based cognitive radio (CR) systems. In a departure from existing works…
Sum Throughput Maximization for Multi-User MIMO Cognitive Wireless Powered Communication Networks Abstract?AbstractIn this paper, we study multi-user multi-input multi-output cognitive wireless powered communication networks (WPCN), in which a secondary WPCN shares spectrum with a primary wireless information transfer system. A typical WPCN consists of two different phases. In the first downlink phase, a hybrid access…
Two-Way OFDM-Based Nonlinear Amplify-and-Forward Relay Systems Abstract? We derive closed-form outage probability expressions for fixed-gain (FG) and variable-gain (VG) two-way amplify-and-forward (AF) relay networks subject to a nonlinear transmission at the relay. We then derive an explicit expression for the relay gain that optimizes the network?s performance. Finally, we show that, if the source nodes…
Two-Way Satellite Relaying With Estimated Channel Gains Abstract? we consider the two-way relaying of the data of two earth stations (ESs) via satellite links. The satellite is considered to be of transparent type, which only receives the signals over the uplink and broadcasts these signals with some transponder gain over its downlink frequencies. The two-way…
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