Research Publications

Journals

  • OTFS Channel Estimation And Data Detection Designs With Superimposed Pilots, IEEE Transactions on Wireless Communications, to appear.
    Himanshu B. Mishra, Prem Singh, Abhishek K. Prasad and Rohit Budhiraja

  • Hardware-Impaired Rician-Faded Massive MIMO FD Relay: Analysis And Optimization, IEEE Transactions on Communications, to appear.
    Sauradeep Dey, Ekant Sharma, and Rohit Budhiraja

  • Energy-Efficient Spatially-Correlated Hardware Impaired Massive MIMO FD Relaying, IEEE Transactions on Communications, vol. 69, pp 2028 - 2046, March. 2021. [pdf-link].
    Dheeraj Naidu Amudala, Ekant Sharma, and Rohit Budhiraja

  • Energy-Efficient Massive MIMO Multi-Relay NOMA Systems With CSI errors, IEEE Transactions on Communications, vol. 68, pp 7410 - 7428, Dec. 2020.[pdf-link].
    Vikalp Mandawaria, Ekant Sharma and Rohit Budhiraja

  • Robust Transceiver Design for AF Asymmetric Two-Way MIMO Relaying, IEEE Transactions on Signal Processing, vol. 68, pp 5488 - 5503, Sep. 2020.[pdf-link].
    Hrushikesha Pradhan, Rohit Budhiraja and Ketan Rajawat

  • WSEE Optimization Using Asynchronous ADMM For Massive MIMO Two-Way Relaying , IEEE Communications Letters, vol. 24, pp 2255 - 2259, Oct. 2020. [pdf-link]
    Tentu Venkatesh, Ekant Sharma, and Rohit Budhiraja

  • Joint-Mapping-Based Variable Active Antenna Spatial Modulation, IEEE Wireless Communications Letters, vol. 9, pp 1668 - 1672, Oct. 2020. [pdf-link]
    Shyam Gadhai, and Rohit Budhiraja

  • Block-Based Spatial Modulation: Constellation Design And Low-Complexity Detection, IEEE Transactions on Communications, vol. 68, pp 3505 - 3520, Jun. 2020.[pdf-link]
    Shyam Gadhai, and Rohit Budhiraja

  • Hybrid Massive MIMO Two-Way Relaying With Users And Relay Hardware Impairments , IEEE Signal Processing Letters, vol. 27, pp 486 - 490, Feb. 2020.[pdf-link]
    Ekant Sharma, Neha Gupta, Sauradeep Dey and Rohit Budhiraja

  • Large-System Analysis of AF Full-Duplex Massive MIMO Two-Way MRC/MRT Relaying, IEEE Transactions on Communications, vol. 68, pp 2061 - 2077, Apr. 2020. [pdf-link]
    Biswajit Dutta, Rohit Budhiraja, Nambi Sheshadri and David R. Koilpillai

  • Receivers for VBLAST FBMC-OQAM Systems, IEEE Communications Letters, vol. 24, pp 767 - 771, Apr. 2020. [pdf-link]
    Prem Singh, Bagadi Usha Rani, Rohit Budhiraja, and K Vasudevan

  • Energy Efficiency Optimization of Massive MIMO FD Relay With Quadratic Transform, IEEE Transactions on Wireless Communications, vol. 19, pp 1429 - 1448, Feb. 2020. [pdf-link]
    Ekant Sharma, Dheeraj Naidu Amudala, and Rohit Budhiraja

  • Optimization For Energy-Efficient OFDM Amplify and Forward Non-Concurrent Two-Way Relaying, IEEE Communications Letters, vol. 24, pp 405 - 409, Feb. 2020. [pdf-link]
    Sudarshan Babu, Rohit Budhiraja and Ajit K. Chaturvedi

  • Decentralized WSEE Optimization for Massive MIMO Two-Way Half-Duplex AF Relaying, IEEE Transactions on Wireless Communications, vol. 19, pp 1397 - 1414, Feb. 2020. [pdf-link]
    Ekant Sharma, Swadha Chauhan, and Rohit Budhiraja

  • Spectral Efficiency Optimization of Spatially-Correlated Multi-Pair Full-Duplex Massive MIMO Relaying, IEEE Transactions on Communications, vol. 67, pp 8346 - 8364, Dec. 2019. [pdf-link]
    Dheeraj Naidu Amudala, Ekant Sharma, and Rohit Budhiraja

  • Transceiver Design for Massive MIMO Two-Way Half-Duplex AF Hybrid Relay With MIMO Users, IEEE Transactions on Vehicular Technology, vol. 68, pp 8759 - 8774, Sept. 2019. [pdf-link]
    Ekant Sharma, Arpita Chauhan, and Rohit Budhiraja

  • WSEE Maximization of mmWave NOMA Systems, IEEE Communications Letters, vol. 23, pp 1413 - 1417, Aug. 2019. [pdf-link]
    Vikalp Mandawaria, Ekant Sharma and Rohit Budhiraja

  • Probability of Error in MMSE Detection For MIMO-FBMC-OQAM Systems, IEEE Transactions on Vehicular Technology, vol. 68, pp 8196 - 8200, Aug. 2019. [pdf-link]
    Prem Singh, Rohit Budhiraja, and K Vasudevan

  • Scaling Analysis of Hardware-Impaired Two-Way Full-Duplex Massive MIMO Relay, IEEE Communications Letters, vol. 23, pp 1249 - 1253, Aug. 2019. [pdf-link]
    Sauradeep Dey, Ekant Sharma and Rohit Budhiraja

  • Massive MIMO multi-pair two-way half-duplex AF FDD relaying:channel estimation , CSI Transactions on ICT, March 2019, [pdf-link]
    Dheeraj Naidu Amudala, Anupama Rajoriya, Ekant Sharma, Sauradeep Dey and Rohit Budhiraja

  • Weighted Sum Energy Efficiency Optimization for Massive MIMO Two-Way Half-Duplex AF Relaying, IEEE Wireless Communications Letters, vol. 8, pp 25-28, Feb. 2019. [pdf-link]
    Ekant Sharma, Swadha Siddhi Chauhan, and Rohit Budhiraja

  • SER Analysis of MMSE Combining For MIMO FBMC-OQAM Systems With Imperfect CSI, IEEE Communications Letters, vol. 23, pp 226 - 229, Feb. 2019. [pdf-link]
    Prem Singh, Rohit Budhiraja, and K Vasudevan

  • Low-Complexity Subspace-Based Multi-User Hybrid Precoding, IEEE Communications Letters, vol. 23, pp 222 - 225, Feb. 2019. [pdf-link]
    Biswajit Dutta, Rohit Budhiraja, and David R. Koilpillai

  • Analysis of Quantized MRC-MRT Precoder For FDD Massive MIMO Two-Way AF Relaying, IEEE Transactions on Communications, vol. 67, pp 998 - 1003, Feb. 2019. [pdf-link]
    Biswajit Dutta, Rohit Budhiraja, David R. Koilpillai and Lajos Hanzo

  • Joint Power Allocation for OFDM-based Non-Concurrent Two-Way AF Relaying, IEEE Communications Letters, vol. 22, pp 2100 - 2103, Oct. 2018. [pdf-link]
    Sudarshan Babu, Rohit Budhiraja and Ajit K. Chaturvedi

  • New Block-Based Spatial Modulation, IEEE Communications Letters, vol. 22, pp 2016 - 2019, Oct. 2018. [pdf-link]
    Shyam Gadhai, Abhay Kumar Sah, A K Singh, Rohit Budhiraja and Ajit K. Chaturvedi

  • Spectral- and Energy-Efficiency of Massive MIMO Two-Way Half-Duplex Hybrid Processing AF Relay, IEEE Wireless Communications Letters, vol. 7, pp 876 - 879, Oct. 2018. [pdf-link]
    Ekant Sharma, Ashish Shukla, and Rohit Budhiraja

  • CFO and Channel Estimation for Frequency Selective MIMO-FBMC/OQAM Systems, IEEE Wireless Communications Letters, vol. 7, pp 844 - 847, Oct. 2018. [pdf-link]
    Prem Singh, Ekant Sharma, K Vasudevan and Rohit Budhiraja

  • Full-Duplex Massive MIMO Multi-Pair Two-Way AF Relaying: Energy Efficiency Optimization , IEEE Transactions on Communications, vol. 66, pp 3322-3340, Aug. 2018. [pdf-link]
    Ekant Sharma, Rohit Budhiraja, K Vasudevan and Lajos Hanzo

  • High-Diversity Joint Precoder Design for Non-Concurrent Two-Way AF MIMO Relaying, IEEE Transactions on Communications, vol. 66, pp 2855 - 2872, Jul. 2018. [pdf-link]
    Biswajit Dutta, Rohit Budhiraja and David R. Koilpillai

  • Bit-Level Reduced Neighborhood Search for Low-complexity Detection in Large MIMO Systems, IEEE Wireless Communications Letters, vol. 7, pp 146-149, Apr. 2018. [pdf-link]
    Pushpender Mann, Abhay Kumar Sah, Rohit Budhiraja and Ajit K. Chaturvedi

  • PAPR Analysis of Superimposed Training Based SISO/MIMO-OFDM Systems With Orthogonal Affine Precoder, Elsevier Physical Communications, Aug. 2017. [pdf-link]
    E Sharma, Himanshu B Mishra, K Vasudevan and Rohit Budhiraja

  • A Common Transceiver for Asymmetric and Symmetric Two-way Relaying With Relaxed Antenna Constraints, IEEE Transactions on Vehicular Technology, vol. 66, pp 7026 - 7037, Aug. 2017. [pdf-link]
    Rohit Budhiraja and Ajit K Chaturvedi

  • Improved Rate-Energy Tradeoff for Energy Harvesting Interference Alignment Networks, IEEE Wireless Communications Letters, vol. 6, pp 410-413, Jun. 2017. [pdf-link]
    Rishabh Gupta, Ajit K. Chaturvedi and Rohit Budhiraja

  • Limited-Feedback Low-Encoding Complexity Precoder Design for Downlink of FDD Multi-User Massive MIMO Systems, IEEE Transactions on Communications, vol. 5, pp 1956 - 1971, May. 2017. [pdf-link]
    Biswajit Dutta, Rohit Budhiraja and David R. Koilpillai

  • Transceiver Design for Non-Concurrent Two-way MIMO AF Relaying With QoS Guarantees, IEEE Transactions on Vehicular Technology, vol. 65, pp 9651-9661, Dec. 2016. [pdf-link]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Joint Transceiver Design for QoS-Constrained MIMO Two-Way Non-Regenerative Relaying Using Geometric Programming, IEEE Transactions on Wireless Communications, vol. 15, pp 3453-3465, May 2016. [pdf-link]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Joint Transceiver Design for Non-Concurrent MIMO Two-way AF Relaying, IEEE Wireless Communications Letters, vol. 4, pp 497-500, Oct. 2015. [pdf-link]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Multiuser Two-Way Non-Regenerative MIMO Relaying With Non-Concurrent Traffic, IEEE Transactions on Vehicular Technology, vol. 64, pp 3268-3273, Jul. 2015. [pdf-link]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Joint Precoder and Receiver Design for AF Non-Simultaneous Two-way MIMO Relaying, IEEE Transactions on Wireless Communications, vol. 14, pp. 2942-2955, Jun. 2015. [pdf-link]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Linear Precoders for Non-Regenerative Asymmetric Two-way Relaying in Cellular Systems, IEEE Transactions on Wireless Communications, vol. 13, pp. 5002-5014, Sep. 2014. [pdf-link]
    Rohit Budhiraja, Karthik KS and Bhaskar Ramamurthi

  • End-to-End India UK Transnational Wireless Testbed, ICTACT Journal on Communication Technology, vol. 2, pp. 323-328, May. 2011. [pdf]
    Rohit Budhiraja, Bhaskar Ramamurthi, Babu Narayanan and A Oredope

  • Efficient Low Bit-Rate Low-Latency Channelization in DECT, EURASIP Journal on Wireless Communications and Networking, vol. 2006, pp. 1-8, May. 2006. [pdf-link]
    Rohit Budhiraja and Bhaskar Ramamurthi

Conferences

  • Analysis of Statistical CSI-based Optimized Phase-Shift IRS-aided FD mMIMO System, Proceedings of IEEE Globecom 2021, Madrid , Spain, pp. 1-6, Dec. 2021.
    Nitish Deshpande, Sauradeep Dey, Ekant Sharma, Dheeraj Amudala Naidu, and Rohit Budhiraja

  • Closed Form BER For ZF OTFS Receivers, Proceedings of IEEE SPAWC 2021 Lucca, Italy, Sep. 2021.
    Khushboo Yadav, Prem Singh, Himanshu Mishra, and Rohit Budhiraja

  • Low-Complexity Linear MIMO-OTFS Receiver, Proceedings of IEEE ICC 2021 Workshop on OTFS for 6G and Future High-mobility Communications , Montreal , Canada, pp. 1-6, June. 2021.
    Prem Singh, Himanshu Mishra, and Rohit Budhiraja

  • Iterative Channel Estimation And Data Detection in OTFS Using Superimposed Pilots, Proceedings of IEEE ICC 2021 Workshop on OTFS for 6G and Future High-mobility Communications , Montreal , Canada, pp. 1-6, June. 2021.
    Himanshu Mishra, Prem Singh, Abhishek Prasad and Rohit Budhiraja

  • UAV-Enabled Hardware-Impaired Cell-free Massive MIMO With Spatially-Correlated Rician Fading, Proceedings of IEEE ICC 2021, Montreal , Canada, pp. 1-6, June. 2021.
    Venkatesh Tentu, Dheeraj Naidu Amudala, Ekant Sharma and Rohit Budhiraja

  • Max-Min Fairness for Wireless-Powered Spatially Correlated Massive MIMO Multi-way Relaying, Proceedings of IEEE ICC 2021, Montreal , Canada, pp. 1-6, June. 2021.
    Aditya Gupta, Dheeraj Naidu Amudala, Ekant Sharma and Rohit Budhiraja

  • FD Cell-Free mMIMO: Analysis and Optimization, Proceedings of IEEE ICC 2021, Montreal , Canada, pp. 1-6, June. 2021.
    Soumyadeep Datta , Ekant Sharma, Dheeraj Naidu Amudala, Rohit Budhiraja, Shivendra Panwar

  • Dynamic Resolution ADC/DAC Massive MIMO FD Relaying System Over Correlated Rician Channel, Proceedings of IEEE EUSIPCO 2020, Amsterdam, Netherlands, pp. 1-6, Jan. 2021.
    Sauradeep Dey, Ekant Sharma, and Rohit Budhiraja

  • User Activity And Data Detection For MIMO Uplink C-RAN Using Bayesian Learning, Proceedings of IEEE EUSIPCO 2020, Amsterdam, Netherlands, pp. 1-6, Jan. 2021.
    Anupama Rajoriya, Vidushi Katiyar, and Rohit Budhiraja

  • Spectral Efficiency for Massive MIMO Multi-Relay NOMA Systems with CSI errors, Proceedings of IEEE EUSIPCO 2020, Amsterdam, Netherlands, pp. 1-6, Jan. 2021.
    Vikap Mandawaria, Ekant Sharma, and Rohit Budhiraja

  • Impact of User and Relay Hardware Impairments on Spectral Efficiency of HD Massive MIMO Relay, Proceedings of IEEE SPCOM 2020, Bengaluru, India, pp. 1-6, July. 2020.
    Sauradeep Dey, Ekant Sharma, and Rohit Budhiraja

  • Spatially-Correlated Hardware-Impaired Massive MIMO FD Relaying With MIMO Users, Proceedings of IEEE ICC, 2020, Dublin, Ireland, pp. 1-6, Jan. 2020.
    Dheeraj Naidu Amudala, Ekant Sharma and Rohit Budhiraja

  • Channel Estimator Designs for Emerging 5G New Radio Cellular Systems, Proceedings of IEEE NCC, 2020, IIT Kharagpur, India, pp. 1-6, Jan. 2020.
    Rakesh Mungala and Rohit Budhiraja

  • SBL-Based Interference Cancellation And Data Recovery For Uplink C-RAN, Proceedings of IEEE COMSNETS, 2020, Bengaluru, India, pp. 1-6, Jan. 2020.
    Anupama Rajoriya, Vidushi Katiyar and Rohit Budhiraja

  • Energy Efficient Multi-Pair Massive MIMO Two-Way AF Relaying: A Deep Learning Approach, Proceedings of IEEE COMSNETS, 2020, Bengaluru, India, pp. 1-6, Jan. 2020.
    Venkatesh Tentu, Dheeraj Naidu Amudala, Anupama Rajoriya, Ekant Sharma and Rohit Budhiraja

  • Power Scaling for Massive MIMO UAV Communication System, Proceedings of IEEE COMSNETS, 2020, Bengaluru, India, pp. 1-6, Jan. 2020.
    Soumyadeep Datta, Ekant Sharma and Rohit Budhiraja

  • Multi-Pair Two-way Full-Duplex Massive MIMO Relaying with Non-Ideal Hardware, Proceedings of IEEE Globecomm 2019, Hawai, USA, pp. 1-6, Dec. 2019.
    Sauradeep Dey, Ekant Sharma, and Rohit Budhiraja

  • Algorithm Design For 3GPP NR Downlink Cell Search, Proceedings of IEEE SPAWC 2019, Cannes, France, pp. 1-6, Jul. 2019. [pdf-link]
    KPM Rahul, and Rohit Budhiraja

  • Energy Efficiency Optimization of Massive MIMO FD Relay Using Quadratic Programming, Proceedings of IEEE SPAWC 2019, Cannes, France, pp. 1-6, Jul. 2019. [pdf-link]
    Ekant Sharma, Dheeraj Naidu Amudala, and Rohit Budhiraja

  • Spectral Efficiency of Multi-pair Two-Way Massive MIMO Relay With Correlated Hardware Distortion, Proceedings of IEEE SPAWC 2019, Cannes, France, pp. 1-6, Jul. 2019. [pdf-link]
    Neha Gupta, Ekant Sharma, Sauradeep Dey, and Rohit Budhiraja

  • Multi-antenna Non Orthogonal Multiple Access Using Block-based Spatial Modulation, Proceedings of IEEE SPAWC 2019, Cannes, France, pp. 1-6, Jul. 2019. [pdf-link]
    Vishal Kumar, Shyam Gadhai, Rohit Budhiraja

  • Generalized Block-Based Spatial Modulation and Space Shift Keying", Proceedings of IEEE SPAWC 2019, Cannes, France, pp. 1-6, Jul. 2019. [pdf-link]
    Shyam Gadhai, Abhay Kumar Sah, Rohit Budhiraja and Ajit K. Chaturvedi

  • QoS-Constrained Energy-Efficient AF Two-Way Full-Duplex Relaying with Massive Antennas, Proceedings of IEEE SPCOM 2018, IISc Bangalore, India, pp. 1-6, Jul. 2018. [pdf-link]
    Ekant Sharma and Rohit Budhiraja

  • Hybrid Block Diagonalization for Massive MIMO Two-Way Half-Duplex AF Hybrid Relay, Proceedings of IEEE SPCOM 2018, IISc Bangalore, India, pp. 1-6, Jul. 2018. [pdf-link]
    Arpita Chauhan, Ekant Sharma, and Rohit Budhiraja

  • Spectral- and Energy-Efficiency for Massive MIMO Two-Way Full-Duplex Hybrid Processing AF Relay, Proceedings of IEEE SPCOM 2018, IISc Bangalore, India, pp. 1-6, Jul. 2018. [pdf-link]
    Ekant Sharma, Ashish Kant Shukla, and Rohit Budhiraja

  • Multi-Pair Two Way AF Full-Duplex Massive MIMO Relaying with ZFR/ZFT Processing, Proceedings of IEEE PIMRC 2017, Montreal, QC, Canada, October 8-13, 2017. [pdf-link]
    Ekant Sharma, Rohit Budhiraja and Kasturi Vasudevan

  • Joint Transceiver Design for QoS-Constrained MIMO Relaying, Proceedings of IEEE WPMC 2015, Hyderabad, India. [pdf]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Diagonalized Two-way MIMO AF Relaying for Non-Simultaneous Traffic in Cellular Systems, Proceedings of IEEE SPAWC 2014, Toronto, Canada, pp. 324-328, Jun. 2014. [pdf-link]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Two-way MIMO DF Relaying for Non-Simultaneous Traffic in Cellular Systems, Proceedings of IEEE SPCOM 2014, IISc Bangalore, India, pp. 1-6, Jun. 2014. (Finalist for the best student paper award), [pdf-link]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Precoder design for Asymmetric Multi-user Two-way AF Relaying in Cellular Systems, Proceedings of IEEE ICC 2013, Budapest, Hungary, pp. 5909-5913, Jun. 2013. [pdf-link]
    Rohit Budhiraja, Karthik KS and Bhaskar Ramamurthi

  • Precoder Design for Asymmetric Two-way AF Shared Relay, Proceedings of IEEE NCC 2013, IIT Delhi, India, pp. 1-5, Jan. 2013. [pdf-link]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Deploying IP Multimedia Subsystem (IMS) Services over Next Generation Networks (NGNs): The IU-ATC Integrated Test Bed, 6th Springer International Conference on Testbeds and Research Infrastructures, Berlin, Germany, May. 2010. [pdf-link]
    A Oredope M. Dianati, B. Evans, Rohit Budhiraja and Bhaskar Ramamurthi

  • Modified DECT 3G Physical Layer With Improved Multi-Rate Capability, Proceedings of NCC, IIT Madras, India, pp. 324-328, Jan. 2003. [pdf]
    Rohit Budhiraja and Bhaskar Ramamurthi

  • Backward-compatible Software Digital FM Demodulator for 3G DECT Receiver, Proceedings of NCC, IIT Bombay, India, pp. 324-328, Jan. 2002. [pdf-link]
    N. Hithesh, Rohit Budhiraja and Bhaskar Ramamurthi

PhD thesis

  • Analysis and optimization of energy-efficient massive MIMO wireless relaying systems, Ekant Sharma, 2020, [pdf]

  • MIMO Precoding: New Designs and Performance Guarantees, Biswajit Dutta, 2019, [pdf]