SPiN Lab Publications



2022

  A. Chakraborty, K. Rajawat, and A. Koppel, "Sparse Representations of Positive Functions via First and Second-Order Pseudo-Mirror Descent," IEEE Transactions on Signal Processing, 2022.
  Z. Akhtar and K. Rajawat, "Zeroth and First Order Stochastic Frank-Wolfe Algorithms for Constrained Optimization," IEEE Transactions on Signal Processing, vol. 70, pp. 2119-2135, 2022.
  A. Bedi, K. Rajawat, V. Aggarwal, and A. Koppel, "Escaping Saddle Points with Successive Convex Approximation," IEEE Transactions on Signal Processing, vol. 70, pp. 307-321, 2022.
  Charul, U. Bhatt, P. Biyani, and K. Rajawat, "Traffic Estimation and Prediction via Online Variational Bayesian Subspace Filtering," IEEE Transactions on Intelligent Transportation Systems, vol. 23, no. 5, May 2022.
  J. G. Sreenath, A. Meghawani, S. Chakrabarti, K. Rajawat, and V. Terzija, "Spoofing Attack on Synchrophasor GPS Clock: Impact and Detection in Power System State Estimation," International Journal of Electrical Power and Energy Systems (Elsevier), Jan. 2022.

2021

  B. M. Idrees, J. Akhtar, and K. Rajawat, “Practical precoding via asynchronous stochastic successive convex approximation,” IEEE Transactions Signal Processing, vol. 69, pp. 4177–4191, 2021.
  Z. Akhtar, A. S. Bedi, and K. Rajawat, "Conservative Stochastic Optimization with Expectation Constraints," IEEE Transactions on Signal Processing, vol. 69, pp. 3190-3205, 2021.
  H. Pradhan, A. S. Bedi, A. Koppel, and K. Rajawat, "Adaptive Kernel Learning in Heterogeneous Networks," IEEE Transactions on Signal and Information Processing over Networks, vol. 7, pp. 423-437, 2021.
  R. Tripathi and K. Rajawat, "Adaptive Network Latency Prediction from Noisy Measurements," IEEE Transactions on Network and Service Management - Special Issue on Data Analytics and Machine Learning for Network and Service Management, vol. 18, no. 1, pp. 807-821, Mar. 2021.
  D. S. Kalhan, A. S. Bedi, A. Koppel, K. Rajawat, H. Hassini, A. K. Gupta, "Dynamic Online Learning via Frank-Wolfe Algorithm," IEEE Transactions on Signal Processing, vol. 69, pp. 932-947, 2021.
  R. Dixit, A. S. Bedi, and K. Rajawat, "Online Learning over Dynamic Graphs via Distributed Proximal Gradient Algorithm," IEEE Transactions on Automatic Control, Nov. 2021. (arxiv)
  J. Akhtar, K. Rajawat, V. Gupta, and A. K. Chaturvedi, "Joint User and Antenna Selection in Massive-MIMO Systems with QoS-Constraints," IEEE Systems Journal, vol. 15, no. 1, pp. 497-508, Mar. 2021.
  A. S. Bedi, A. Koppel, K. Rajawat, and P. Sanyal , "Nonparametric Compositional Stochastic Optimization for Risk-Sensitive Kernel Learning," in IEEE Transactions on Signal Processing, vol. 69, pp. 428-442, 2021.
  S. Teja T., P. Katiyar, and K. Rajawat, "Dynamic Cache Management in Content Delivery Networks," Computer Networks (Elsevier), vol. 187, Mar. 2021.
  J. G. Sreenath, S. Chakrabarti, and K. Rajawat, "Asynchronous Hierarchical Forecasting-Aided State Estimator with Sub-Area Data Validation for Power Systems," IEEE Sensors Journal, vol. 21, no. 2, Jan. 2021.

2020

  H. Pradhan, R. Budhiraja, and K. Rajawat, "Robust Transceiver Design for AF Asymmetric Two-Way MIMO Relaying," IEEE Transactions on Signal Processing, vol. 68, no. 1, pp. 5488-5503, Sept. 2020.
  Mohan Krishna N., A. S. Bedi, K. Rajawat, and M. Coupechoux, "Online Trajectory Optimization Using Inexact Gradient Feedback for Time-Varying Environments," IEEE Transactions on Signal Processing, vol. 68, pp. 4824-4838, Aug. 2020. [arxiv]
  Santhosh Kumar C., K. Rajawat, S. Chakrabarti, and B. C. Pal, Robust Distribution System State Estimation with Hybrid Measurements, IET Generation, Transmission, and Distribution, vol. 14, no. 16, pp. 3250-3259, Aug. 2020.
  A. Koppel, A. S. Bedi, K. Rajawat, and B. M. Sadler, "Optimally Compressed Nonparametric Online Learning," IEEE Signal Processing Magazine - Special Issue on Distributed, Streaming Machine Learning, vol. 37, no. 3, pp. 61-70, May 2020. [arxiv]
  C. Kumar and K. Rajawat, "Network Dissensus via Distributed ADMM," IEEE Transactions on Signal Processing, vol. 68, no. 1, pp. 2287-2301, Apr. 2020.
  I. Mohammed, J. G. Sreenath, S. S. Sadashiv, K. Rajawat, and S. Chakrabarti, "Modified re-iterated Kalman filter for handling delayed and lost measurements in power systems state estimation," IEEE Sensors Journal, vol. 20, no. 7, pp. 3946-3955, Apr. 2020.
  L. J. Mohan, K. Rajawat, U. Parampalli, and A. Harwood, "Optimal placement for repair-efficient erasure codes in geo-diverse storage centres," Journal of Parallel and Distributed Computing (Elsevier), vol. 135, pp. 101-113, Jan. 2020.

2019

  S. Teja T. and K. Rajawat, "Optimal Design of Queuing Systems via Compositional Stochastic Programming," IEEE Transactions on Communications, vol. 67, no. 12, pp. 8460-8474, Dec. 2019.
  R. Dixit, A. S. Bedi, and K. Rajawat, "Distributed Online Learning over Time-varying Graphs via Proximal Gradient Descent," in Proc. of the IEEE Conf. on Decision and Control (CDC), Nice, France, Dec. 2019.
  N. Mohan Krishna, L. Arora, A. Bose, K. Rajawat, and R. M. Hegde, "Model Free Calibration of Wheeled Robots Using Gaussian Process," IEEE/RSJ International Conf. on Intelligent Robots and Systems (IROS), Macau, China, Nov., 2019.
  C. Kumar and K. Rajawat, "Dictionary-based Statistical Fingerprinting for Indoor Localization," IEEE Transactions on Vehicular Technology, 2019 (to be published).
  A. S. Bedi, A. Koppel, and K. Rajawat, "Nonstationary Nonparametric Optimization: Online Kernel Learning against Dynamic Comparators," in Intl. Conf. on Continuous Optimization (ICCOPT), Berlin, Germany, Aug. 2019.
  L. Arora, N. Mohan Krishna, K. Rajawat, and R. M. Hegde, "Automatic Joint Calibration of odometry and sensor parameters," International Conf. on Advances in Robotics (AIR), July 2019.
  A. S. Bedi, A. Koppel, and K. Rajawat, "Asynchronous Online Learning in Multi-Agent Systems with Proximity Constraints," IEEE Transactions on Signal and Information Processing over Networks, vol. 5, no. 3, pp. 479-494, Sept. 2019.
  A. S. Bedi, A. Koppel, and K. Rajawat, "Asynchronous Saddle Point Algorithm for Stochastic Optimization in Heterogeneous Networks," IEEE Transactions on Signal Processing, vol. 67, no. 7, pp. 1742-1757, Apr. 2019.
  R. Dixit, A. S. Bedi, R. Tripathi, and K. Rajawat, "Online Learning with Inexact Proximal Online Gradient Descent Algorithms," IEEE Transactions on Signal Processing, vol. 67, no. 5, pp. 1338-1352, Mar. 2019.
  J. Akhtar and K. Rajawat, "Quality-of-Service Constrained User and Antenna Selection in Downlink Massive-MIMO Systems," in Proc. of the IEEE WCNC Workshop on Advanced 5G Radio Access Network Features and Performance, Marrakech, Morocco, April 15-18, 2019.
  C. Paliwal, U. Bhatt, P. Biyani, and K. Rajawat, "Online Variational Bayesian Subspace Filtering," in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Brighton, UK, May 12-17, 2019.
  N. Mohan Krishna, S. Joshi, and K. Rajawat, "Utility-Optimal Trajectory Design for Time-Varying Ocean Environments," in Proc. of the Intl. Conf. on Robotics and Automation (ICRA), Montreal, Canada, May 20-24, 2019.
  S. Teja T. and K. Rajawat, "Decentralized Multi-Antenna Coded Caching with Cyclic Exchanges," in Proc. of the Intl. Conf. on Communications (ICC), Shanghai, China, May 20-24, 2019.
  A. Koppel, A. S. Bedi, and K. Rajawat, "Controlling the the Bias-Variance Tradeoff via Coherent Risk for Robust Learning with Kernels," in Proc. of the American Control Conference (ACC), Philadelphia, PA, USA, July 10-12, 2019.

2018

  S. Teja T. and K. Rajawat, "Decentralized Multi-Antenna Coded Caching with Cyclic Exchanges," 56th Annual Allerton Conf. on Communication, Control, and Computing, Monticello, IL, USA, Oct. 2018.
  A. S. Bedi, A. Koppel, K. Rajawat, "Asynchronous Saddle Point Method: Interference Management Through Pricing," in Proc. of the IEEE Conf. on Decision and Control, Miami Beach, Florida, USA, Dec. 2018.
  R. Dixit, A. S. Bedi, R. Tripathi, K. Rajawat, "Time Varying Optimization via Inexact Proximal Online Gradient Descent," in Proc. of the Asilomar Conf. on Signals, Systems, and Computers, Pacific Grove, CA, USA, Nov. 2018.
  R. Tripathi and K. Rajawat, "Dynamic Network Latency Prediction with Adaptive Matrix Completion," in Proc. of the Intl. Conf. on Signal Processing and Communications (SPCOM), Bangalore, India. June 2018.
  A. S. Bedi, H. Pradhan, and K. Rajawat, "Decentralized Asynchronous Stochastic Gradient Descent: Convergence Rate Analysis," in Proc. of the Intl. Conf. on Signal Processing and Communications (SPCOM), Bangalore, India. June 2018.
  J. Akhtar and K. Rajawat, "QoS-based Antenna and User Selection in Large-Scale Fading for Massive-MIMO Systems" in Proc. of the IEEE Intl. Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Kalamata, Greece, June 2018.
  A. S. Bedi, P. V. Aditya Prasad, M. W. Ahmad, S. Shinde, K. Rajawat, and S. Anand, "Online Algorithms for Storage Utilization under Real-Time Pricing in Smart Grid," International Journal of Electrical Power and Energy Systems (Elsevier), vol. 101, pp. 50-59, Oct. 2018.
  A. S. Bedi and K. Rajawat, "Wireless Network Optimization via Stochastic Sub-gradient Descent: Rate Analysis," in Proc. of the IEEE Wireless Communications and Networking Conf. (WCNC), Barcelona, Spain, Apr. 2018.
  A. S. Bedi, K. Rajawat, and M. Coupechoux, "An Online Approach to D2D Trajectory Utility Maximization Problem," in Proc. of the IEEE Intl. Conf. on Computer Communications (INFOCOM), Honolulu, HI, USA, Apr. 2018.
  J. Akhtar and K. Rajawat, "Distributed Sequential Estimation in Wireless Sensor Networks," IEEE Transactions on Wireless Communications, 2018 (to be published).
  A. S. Bedi, P. Sarma, and K. Rajawat, "Adversarial Multi-Agent Target Tracking with Inexact Online Gradient Descent," in Proc. of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Calgary, Canada, Apr. 2018.
  C. Kumar and K. Rajawat, "Dictionary learning-based fingerprinting for indoor localization," in Proc. of the National Conference on Communications (NCC), Hyderabad, India, Feb. 2018.
  A. S. Bedi and K. Rajawat, "Asynchronous incremental stochastic dual descent algorithm for network resource allocation," IEEE Transactions on Signal Processing, 2018.
  A. S. Bedi, P. Sarma, and K. Rajawat, "Tracking moving agents via inexact online gradient descent algorithm," IEEE Journal of Selected Topics in Signal Processing - Special issue on Machine Learning for Cognition in Radio Communications and Radar, Feb. 2018.
  A. S. Bedi and K. Rajawat, "Network resource allocation via stochastic subgradient descent: convergence rate," IEEE Transactions on Communications, 2018.

2017

  A. S. Bedi, A. Koppel, and K. Rajawat, “Beyond consensus and synchrony in decentralized online optimization using saddle point method,” in Proc. Asilomar Conf. on Signals Systems Computers, (Accepted), 2017.
  R. Tripathi, B. Mohan, and K. Rajawat, "Adaptive Low Rank Matrix Completion," IEEE Transactions on Signal Processing, 2017 (to be published).
  K. Rajawat and S. Kumar, "Stochastic Multidimensional Scaling," IEEE Transactions on Signal and Information Processing over Networks - Special Issue on Distributed Information Processing in Social Networks, June 2017
  A. S. Bedi and K. Rajawat, "Asynchronous Resource Allocation in Distributed Heterogeneous Networks," in Proc. of the IEEE ICC, Paris, France, May 2017.
  A. S. Bedi and K. Rajawat, "Optimal Utilization of Storage Systems under Real-time Pricing," in Proc. of the IEEE ICC Workshop on Data Analytics for Smart Grid, Paris, France, May 2017.
  S. Kumar, R. Jain, and K. Rajawat, "Asynchronous Optimization Over Heterogeneous Networks via Consensus ADMM," IEEE Transactions on Signal and Information Processing over Networks, Mar. 2017

2016

  S. Kumar and K. Rajawat, "Distributed Interference Alignment for MIMO Cellular Network Via Consensus ADMM" in Proc. of the IEEE GlobalSIP, Washington, DC USA, Dec. 2016..
  S. Kumar, R. Jain, and K. Rajawat, " Asynchronous Optimization Over Heterogeneous Networks via Consensus ADMM," IEEE Transactions on Signal and Information Processing over Networks , (to be published).
  A. S. Bedi and K. Rajawat, "Online Load Scheduling Under Price and Demand Uncertainty in Smart Grid," in Proc. of the Intl. Conf. on Signal Processing and Communications (SPCOM), Bangalore, India. June 2016.
  A. S. Bedi, J. Akhtar, K. Rajawat, and A. K. Jagannatham, "BER-Optimized Precoders for OFDM systems with Insufficient Cyclic Prefix,"IEEE Communication Letters, vol. 20, no. 2, pp 280-283, Feb. 2016.
  S. Kumar, R. Kumar, and K. Rajawat, "Cooperative Localization of Mobile Networks via Velocity-assisted Multidimensional Scaling," IEEE Transactions on Signal Processing, vol. 64, no. 7, pp. 1744-58, Feb. 2016.

2015

  G. Kapoor and K. Rajawat, "Outlier-aware Cooperative Spectrum Sensing in Cognitive Radio Networks," Physical Communication, Sept. 2015.
  P. Katiyar and K. Rajawat, "Channel-aware medium access control in multichannel cognitive radio networks," IEEE Communication Letters, vol. 19, no. 10, pp. 1710-13, 2015.
  R. Singh and K. Rajawat, "Online Precoder Design for Parameter Tracking in Wireless Sensor Networks," in Proc. of the IEEE Annual Intl. Symp. on Personal, Indoor, and Mobile Radio Commun. (PIMRC), Hong Kong, Aug. 2015.
  S. Kumar and K. Rajawat, "Velocity Assisted Multidimensional Scaling," in Proc. of the IEEE Intl. Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Stockholm, Sweden, June 2015.

2014

  P. A. Forero, K. Rajawat, and G. B. Giannakis, “Prediction of partially observed dynamical processes over networks via dictionary learning,” IEEE Transactions on Signal Processing, vol. 62, no. 13, pp. 3305-3320, July 2014.
  K. Rajawat, E. Dall'Anese, and G. B. Giannakis, “Dynamic network delay cartography,” IEEE Transactions on Information Theory, vol. 60, no. 5, pp. 2910-2920, May 2014.
  G. Kapur, and K. Rajawat, "Outlier-aware spectrum sensing in cognitive radio networks," in Proc. of the Intl. Conf. on Signal Processing and Communication Systems (ICSPCS), Gold Coast, Australia, Dec., 2014.
  A. Mishra, A. Pal, K. Rajawat, and A. K. Jagannatham, "Sparse Bayesian Learning-based Data-Aided Channel Estimation for STTC MIMO Systems", in Proc. of the Australasian Telecommunication Networks and Applications Conference (ATNAC), Melbourne, Australia, Nov. 2014.

2013

  G. Mateos and K. Rajawat, ''Dynamic Network Cartography: Advances in Network Health Monitoring,'' IEEE Signal Processing Magazine - Special issue on `Adaptation and learning over complex networks,' vol. 30, no. 3, pp. 129-143, May 2013.
  S.-J. Kim, E. Dall'Anese, J. A. Bazerque, K. Rajawat, and G. B. Giannakis, "Advances in Spectrum Sensing and Cross-Layer Design for Cognitive Radio Networks," EURASIP, E-Reference Signal Processing, 2013

2012

  K. Rajawat, A. Cano, and G. B. Giannakis, “Network-compressive coding for wireless sensors with correlated data,” IEEE Transactions on Wireless Communications, vol. 11, no. 12, pp. 4264-4274, Dec. 2012.
  K. Rajawat, E. Dall’Anese, and G. B. Giannakis, “Dynamic Network Kriging,” in Proc. of IEEE Statistical Signal Processing Workshop, Ann Arbor, MI, Aug. 2012.
  P. A. Forero, K. Rajawat, and G. B. Giannakis, “Semi-supervised dictionary learning for network-wide link load prediction,” in Proc. of Cognitive Information Processing Workshop, Baiona, Spain, May 2012.