The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Protein repeats are tandemly repeating segments within an amino acid sequence. They induce several important structural and binding properties on the protein. So far, the most successful detection schemes for such repeats have used computationally expensive techniques such as dynamic programming algorithms, HMMs, and so on. Classical DSP tools such as STFT, unfortunately, perform poorly in the presence...
Limitations of previous thermographic studies to detect diabetic peripheral neuropathy (DPN) are addressed in this combined analysis using spatial and temporal features. In our approach, we extract information of temperature patterns before cooling and during recovery after cooling. Temporal features are extracted from, angiosome patterns, principal component analysis (PCA) and independent component...
A forward error correction scheme for asynchronous sensor communication is proposed, where a continuous-time sparse waveform signal is asynchronously sampled and communicated over a noisy channel via Q-ary frequency-shift keying. The presented concatenated code employs outer systematic convolutional codes and inner embedded marker codes, which effectively preserve the timing information along with...
Physical-layer network coding (PNC) allows to improve the throughput on the two-way relay channel (TWRC). PNC systems using higher-order modulation present some challenges regarding how to design the PNC mapping at the relay. With higher-order modulation it is also desirable to use constellation shaping which allows to minimize the average transmitted energy. In this paper, we show how low-complexity...
In his letter of June 3, 1883, Vincent Van Gogh wrote “drawing is at the root of everything.” Though much less well known than his paintings, Vincent used a large number of different kinds of strokes, hatchings, and dots to convey his unique vision in pen and ink. This paper presents a first attempt to automatically catalog the various kinds of pen strokes used throughout Vincent's career. The output...
In this paper1 we consider the Network MIMO channel under the so-called Distributed Channel State Information at the Transmitters (D-CSIT) configuration where the precoder is designed in a distributed manner at each Transmitter (TX) on the basis of local versions of Channel State information (CSI) of various quality. In that setting, a novel transmission scheme has been developed in [1] and surprisingly...
A non-orthogonal multiple access (NOMA) technique is presented where the information bits of a user are carried by the least significant bits (LSBs) of other users' symbols. It is shown that the user performance can be improved by a receiver combining that relies on the alignment of sub-constellation corresponding to the LSBs at user receiver. The rate outage analysis shows that the proposed technique...
This paper studies global channel state information (CSI) in time-slotted wireless ring networks with time-varying reciprocal channels. Lower bounds on maximum and average staleness of global CSI are derived, and efficient protocols that achieve the bounds are developed. Two extreme scenarios are considered with either (i) one node transmitting at a time or (ii) the maximum number of nodes transmitting...
Spatially-coupled (SC) codes have recently attracted significant attention due to their capability to achieve capacity approaching performance. Significant recent research has been devoted to the asymptotic study of SC codes. Although the asymptotic analysis is relevant, it cannot be directly applied in the finite-length setting due to cycle-free and averaging assumptions. In this paper, we consider...
Subspace clustering has become a popular tool for clustering high-dimensional non-linearly separable data. However, state-of-the-art subspace clustering algorithms do not scale well as the number of data increases. The present paper puts forth a novel randomized subspace clustering scheme for high-volume data based on random projections. Performance of the proposed method is assessed via numerical...
Analog-to-information converters and Compressed Sampling (CS) sensor front-ends try to only extract the relevant, information-bearing elements of an incoming data stream. Information extraction and recognition tasks can run directly on the compressed data stream without needing full signal reconstruction. The accuracy of the extracted information or classification is strongly determined by the front-end...
High-resolution phase retrieval is challenging due to the low signal-to-noise ratio of measurements. This work utilizes variable splitting and alternating minimization to simultaneously enforce a 1-norm data fit penalty, an analysis-form sparse regularizer, and nonnegativity or real-valued image constraints to resolve an image from squared-magnitude measurements. The reconstruction algorithm incorporates...
Spectrum is the lifeblood of the future wireless networks and the data storm driven by the emerging technologies like Internet of Things, video over wireless will lead to a pressing artificial spectrum scarcity. Future smart terminals will need to quickly assess the spectrum usage and opportunistically use the available spectrum to overcome this challenge. They require energy-efficient spectrum scanning...
Sleep is important for normal brain function, and sleep disruption is comorbid with many neurological diseases. There is a growing mechanistic understanding of the neurological basis for sleep regulation that is beginning to lead to mechanistic mathematically described models. It is our objective to validate the predictive capacity of such models using data assimilation (DA) methods. If such methods...
A new signaling concept, known as unique word — orthogonal frequency division multiplexing (UW-OFDM), has been introduced recently. It has been shown that UW-OFDM has better spectral properties and also a superior bit error ratio (BER) performance over conventional cyclic prefix (CP) based OFDM. In UW-OFDM, the CPs are replaced by deterministic sequences, the so-called unique words (UWs). This is...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.