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In this paper we address distributed detection wherein the instantaneous signal-to-noise ratios (SNRs) at the individual sensors are unknown. A motivating example is a distributed radar receiver when the target radar cross section and/or the noise variance are unknown at each receiver. Recently it has been shown that detection problems can be converted into the estimation of a separating function...
In recent years, iterative receiver has been widely considered since it is able to achieve high data rates and reliable communications for coded MIMO-OFDM systems. However, such a receiver is extremely challenging in practical implementation. In this paper, we present an efficient fixed-point arithmetic of iterative receiver based on low-complexity K-Best decoder in order to reduce the hardware costs...
Performance of cognitive network strongly depends on the effectiveness of primary (licensed) user (PU) detection. This paper introduces the algorithm for PUs signal detection based on Markov model of the PUs activity. It is shown that the developed PUs detection algorithm outperforms the conventional detector that maximizes likelihood.
Orthogonal frequency division multiplexing (OFDM) is prone to frequency offset which gives rise to intercarrier interference (ICI). Recently, a novel OFDM transmission scheme called OFDM with index modulation (IMOFDM) is proposed, which outperforms conventional OFDM in the absence of frequency offset. As in IM-OFDM, partial subcarriers are set to be idle by spatial modulation, the potential of IM-OFDM...
In this paper, we consider the performance analysis of a decode-and-forward (DF) cooperative relaying (CR) scheme over bursty impulsive noise channel. As compared to existing literature, here, we generalize the performance analysis to the multi-relay scenario with and without considering error propagation from the relays. For this scheme, we evaluate the bit error rate (BER) performance in the presence...
Minimum-shift keying (MSK) limits problems associated with nonlinear distortion and is used in a variety of applications, like signal transmission from satellites and broadcasting. Although the optimal coherent MSK receiver simplifies to constant-complexity symbol-by-symbol detection, optimal blind reception of MSK takes the form of sequence detection (due to channel-induced memory) which has exponential...
This paper investigates error performance of sparse code multiple access (SCMA) networks with multiple access channels (MAC) and broadcast channels (BC).We give the closed-form expression for the pairwise error probability (PEP) of joint maximum likelihood (ML) detection for multiuser signals over additive white Gaussian noise (AWGN) and Rayleigh fading channels with an arbitrary number of users and...
Abstract-- As a promising radio access technology for future 5G network, novel multiple access (NMA) is aimed to improve spectrum efficiency and access capability via design of successive interference cancellation (SIC) amenable pattern in single domain (e.g. power domain, code domain, and space domain) or joint multiple domains. In this paper, a pattern in joint space and power domain is designed...
The focus of this paper is on the detection of moving targets with a Forward Scatter Radar system. More precisely, a non-coherent detection strategy is considered and theoretical closed-form expressions of the probability of false alarm and of the probability of detection are derived in order to allow performance prediction and support system design. Finally the theoretical contribution is verified...
Purpose of weighting along with the defined weighting function for the new RMS-Average detector is introduced. Extensive comparison measurements on multimedia equipment in the scope of CISPR 32 were performed using the required Quasi-Peak and Average detectors and the RMS-Average detector for both conducted and radiated emission measurements to confirm the weighting function and for the definition...
With an increasing need for worldwide counter-terrorism, security is becoming a top priority on the agenda of local governments. Governments has enforced patrols, security forces, and security equipments such as door frame detectors, screens and hand-held detectors in public places like railway stations and airports. The main purpose of these security equipments is to detect potentially dangerous...
Repeaterless low swing interconnects use mixed signal circuits to achieve high performance at low power. When these interconnects are used in large scale and high volume digital systems their testability becomes very important. This paper discusses the testability of low swing repeaterless on-chip interconnects with equalization and clock synchronization. A capacitively coupled transmitter with a...
In this paper, dual-layer multi-user multiple-input multiple-output systems are studied. Building on the low-complexity layered orthogonal lattice detector (LC-LORD), an efficient sub-optimal joint modulation classification (MC) of the co-scheduled user and data detection receiver is developed. By adjusting the Max-Log-Maximum-a-Posteriori MC approach to the limitations of LC-LORD, and expanding it...
In this paper, we propose a simple and novel complex modulation scheme for multiple-LED wireless communication, termed as quad-LED complex modulation (QCM). The proposed QCM scheme uses four LEDs (hence the name ‘quad-LED’), one LED each to map positive real, negative real, positive imaginary, and negative imaginary parts of complex modulation symbols like QAM symbols. The QCM scheme does not need...
Optimal detection of ultra wideband (UWB) pulses in a UWB transceiver employing multiple detector types is proposed and analyzed in this paper. To enable the transceiver to be used for multiple applications, the designers have different types of detectors such as energy detector, amplitude detector, etc., built in to a single transceiver architecture. We propose several fusion techniques for fusing...
In recent years, cognitive radios are regarded as a valid solution to solve the problem of inefficient spectrum utilization. A cognitive radio system which has the ability of spectrum sensing and transmission adjustment is proposed in this paper. An optimal detector applied for Thomson's adaptive multitaper spectrum estimation (AMTSE) is presented. The detector is based on Neyman-Pearson Theorem and...
In this paper, we propose a simple and novel complex modulation scheme for multiple-LED wireless communication, termed as quad-LED complex modulation (QCM). The proposed QCM scheme uses four LEDs (hence the name ‘quad-LED’), one LED each to map positive real, negative real, positive imaginary, and negative imaginary parts of complex modulation symbols like QAM symbols. The QCM scheme does not need...
Power substations generate a significant “bursty impulse noise” that might interfere with wireless technologies working in the vicinity of power equipment. Existing wireless systems are not designed for such an environment; we propose a Maximum a Posteriori (MAP) receiver designed with Markov-Gaussian models in order to mitigate the impact of impulsive noise in substations. We study and compare different...
This paper proposes two metrics for evaluating the low probability of detection (LPD) performance in cooperative wireless communication networks. One metric is the distance ration between the minimum range of all the interceptor-relay/transmitter pairs and the intended transmitter-destination distance. Another is the ratio between the average range of all interceptor-relay/transmitter pairs and the...
In this paper, we assume that little is known about channel state information (CSI) at the receiver in order to recover the unknown transmitted signal. Therefore, channel estimation and data detection are the most useful techniques at the receiver in wireless communication networks for recovering the original transmitted signal. In our study, we propose an algorithm based on least mean square (LMS)...
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