A5060958125- Advanced Wireless Communication Techniques
- MicroRNA in disease regulation
- Circular RNAs in diseases
- Cancer-related molecular mechanisms research
- Wireless Communication Networks Research
- Advanced MIMO Systems Optimization
- RNA Research and Splicing
- Blind Source Separation Techniques
- RNA modifications and cancer
- Cooperative Communication and Network Coding
- Molecular Biology Techniques and Applications
- Advanced Wireless Network Optimization
- Error Correcting Code Techniques
- Satellite Communication Systems
- Advanced Adaptive Filtering Techniques
- Network Traffic and Congestion Control
- Antenna Design and Optimization
- Telecommunications and Broadcasting Technologies
- Sesame and Sesamin Research
- Electromagnetic Compatibility and Noise Suppression
- Image and Video Quality Assessment
Institute of Life Sciences
2018-2024
KIIT University
2018-2023
Viasat (United States)
2006-2018
University of California, San Diego
2006-2007
Accurate signal-to-noise ratio (SNR) and noise variance estimation are extremely important aspects of receiver design in multiple-input multiple-output (MIMO) systems. Typically, these parameters estimated using known pilot/training symbols. However, significant improvements may be made by both the pilot symbols as well unknown data In this paper, we address SNR MIMO systems for a aided (DA) model, non-data (NDA) mixed model that uses The Cramér-Rao lower bound (CRLB) modified (MCRLB)...
High-throughput RNA sequencing and novel bioinformatic pipelines have identified thousands of circular (circ)RNAs containing backsplice junction sequences. However, circRNAs generated from multiple exons may contain different combinations and/or introns arising alternative splicing, while the sequence is same. To be able to identify circRNA splice variants, we developed a method termed circRNA-Rolling Circle Amplification (circRNA-RCA). This detects full-length sequences by performing...
Circular RNAs (circRNAs) are covalently closed RNA molecules generated from precursor by the head-to-tail backsplicing of exons. Hundreds studies demonstrated that circRNAs ubiquitously expressed and regulate cellular events modulating microRNA (miRNA) RNA-binding protein (RBP) activities. A few also known to translate into functional polypeptides regulating physiology. All these functions primarily depend on full-length sequence circRNAs. CircRNA backsplice junction is key identifying their...
Signal to noise ratio (SNR) estimation is an important problem in many communication systems. SNR often needs be estimated the presence of unknown transmitted data symbols a non aided (NDA) manner. In this paper we derive methodology calculate Cramer-Rao lower bound (CRLB) NDA additive white Gaussian (AWGN) channel for any symmetric constellation. particular, CRLB evaluated and presented QPSK, 8PSK, 16QAM, 32QAM, 16APSK 32APSK constellations. We also present Expectation-Maximization (EM)...
Circular RNAs (circRNAs) are a large family of noncoding RNA molecules that have emerged as novel regulators gene expression by sequestering microRNAs (miRNAs) and RNA-binding proteins (RBPs). Several computational tools been developed to predict circRNA interaction with target miRNAs RBPs view studying their potential effect on downstream genes cellular physiology. Biochemical assays, including reporter AGO2 pulldown, ribonucleoprotein biotin-labeled used capture the association circRNAs....
Circular RNAs (circRNAs) are a large family of noncoding that have emerged as novel regulators gene expression. However, little is known about the function circRNAs in pancreatic β-cells. Here, transcriptomic analysis mice islet RNA-sequencing data identified 77 differentially expressed between fed with normal diet and high-fat diet. Surprisingly, multiple were derived from intron 2 preproinsulin (Ins2) termed circular intronic (ci)-Ins2. The expression ci-Ins2 transcripts mouse islets, βTC6...
The performance of MIMO systems with intentional timing offset between the transmitters has recently been focus study different researchers. In these schemes, a nonzero (but known) symbol is introduced signals transmitted from to improve systems. This leads reduction in Interantenna Interference (IAI), and it shown that an advanced receiver can utilize this information extract significant gains. paper, we show transmission scheme may be used conjunction kinds receivers including ZF, MMSE,...
A new approach to detect the onset of saturation (1dB output compression point) at remote terminals is proposed in this paper. The dithers transmit power periodic ranging bursts by a known amount and then estimates received difference Signal Noise Ratio (SNR) uses metric indicate whether operating point Power Amplifier linear range or not. Expectation-Maximization (EM) Algorithm used achieve ML estimate SNR compared Cramer-Rao Lower Bound (CRLB). Application algorithm commercial satellite...
M-ary frequency shift keying (MFSK) using one or more orthogonal tones per symbol has been in use non-coherent systems for quite some time. We present an alternate system non-orthogonal tones, spread non-uniformly throughout the bandwidth, which outperforms equivalent tone system. demonstrate that from a theoretical capacity point of view, same bit rate could be achieved by proposed with as much 2.5 dB lower signal-to-noise ratio (SNR). For practical configurations we 2 gain. performance...
MAESTRO, a novel transmission scheme using multiple synchronized transmitters, is introduced in this paper. A non-zero (but known) symbol timing offset between the signals transmitted from different transmitters to improve performance of MIMO systems. This leads reduction interference and it shown that an advanced receiver can utilize information extract significant gains. may be used conjunction with kinds receivers. In particular, comparisons are made joint detection MMSE receivers, VBLAST...
Satisfaction of end users is one the most important factors for every service provider. Given that a lot along with network conditions affect user's experience, quality given by Quality Service (QoS) parameters alone cannot provide an accurate measure Experience (QoE). Today, airlines have started providing in-flight wi-fi services, which allow passengers to use various Internet services while on-board flight, such as send and receive e-mails, stream video from diverse online providers, so...
<ns4:p>Current RNA purification methods widely use silica-based columns that allow quick isolation of high-quality and good quantities RNA. However, the major limitations include high cost, requirement different kits for small isolation, genomic DNA contamination, not being flexible. Here, we used in-house reagent (RIR) cell lysis, followed by precipitation using isopropanol. isolated RIR resulted in a similar quantity quality compared to commercial TRIzol. Furthermore, with recommend...
Multiple antenna enhancements via symbol timing relative offsets (MAESTRO) was recently introduced as a scheme to improve the performance of V-BLAST like multi-antenna system by introducing sub-symbol between transmit antennas. In this paper we address role receiver structure on and investigate optimal choice time offset parameter. A similar also Shao et al., where authors use zero-forcing (ZF) conclude outperforms only for small block sizes. We show that suggested al. is deficient main...
32-Amplitude and Phase-Shift-Keying (32APSK) is one of the modulation schemes proposed in 2nd generation Digital Video Broadcasting over Satellite (DVB-S2) standard [1]. This paper presents a Non-Data-Aided (NDA) SNR estimation scheme for 32APSK using Expectation-Maximization (EM) algorithm. Two variants EM algorithm are presented, first with an arbitrary initialization second version that initialized by modifying existing (sub-optimal) technique. We demonstrate significantly faster...
ABSTRACT Current RNA purification methods widely use silica-based columns that allow quick isolation of high-quality and good quantities RNA. However, the major limitations include high cost, requirement different kits for small isolation, genomic DNA contamination, not being flexible. Here, we used in-house reagent (RIR) cell lysis, followed by precipitation using isopropanol. isolated RIR resulted in a similar quantity quality compared to commercial TRIzol. Furthermore, with recommend...
This paper describes the prototyping of a broadband multiple input output (MIMO) wireless testbed using new system level design methodology. First, layout MIMO is introduced. Then, advantage proposed methodology, which integrates and hardware implementation, discussed. A channel sounding presented as an example to show efficiency