New results on cosine-modulated FIR filter banks satisfying perfect reconstruction. - Ravinder David Koilpillai; P. P. Vaidyanathan (ICASSP, 1991)

Some results in the theory of crosstalk-free transmultiplexers. - Ravinder David Koilpillai; Truong Q. Nguyen; P. P. Vaidyanathan (IEEE Trans. Signal Process., 1991)

Equalizer performance with diversity for U.S. digital cellular. - Ravinder David Koilpillai; Sandeep Chennakeshu; Raymond Toy (PIMRC, 1992)

Cosine-modulated FIR filter banks satisfying perfect reconstruction. - Ravinder David Koilpillai; P. P. Vaidyanathan (IEEE Trans. Signal Process., 1992)

Designing allpass filters using the eigenfilter method. - Timo I. Laakso; T. Q. Nguyen; Ravinder David Koilpillai (ICASSP (3), 1993)

A Spectral Factorization Approach to Pseudo-QMF Design. - Ravinder David Koilpillai; P. P. Vaidyanathan (IEEE Trans. Signal Process., 1993)

Enhancing the spectral efficiency of the American digital cellular system with coded modulation. - Sandeep Chennakeshu; Ravinder David Koilpillai; Erik Dahlman (VTC, 1994)

Performance of a spectrally efficient modem for land-mobile radio. - Raymond Toy; Rajaram Ramesh; Sandeep Chennakeshu; Ravinder David Koilpillai (VTC, 1994)

Eigenfilter approach for the design of allpass filters approximating a given phase response. - Truong Q. Nguyen; Timo I. Laakso; Ravinder David Koilpillai (IEEE Trans. Signal Process., 1994)

A new family of modulation schemes for land mobile radio. - Rajaram Ramesh; Raymond Toy; Ravinder David Koilpillai; Sandeep Chennakeshu (PIMRC, 1995)

The theory and design of arbitrary-length cosine-modulated filter banks and wavelets, satisfying perfect reconstruction. - Truong Q. Nguyen; Ravinder David Koilpillai (IEEE Trans. Signal Process., 1996)

Transmultiplexers - Some new applications. - Ravinder David Koilpillai; T. Q. Nguyen; Kambiz C. Zangi (EUSIPCO, 1998)

Efficient filterbank channelizers for software radio receivers. - Kambiz C. Zangi; Ravinder David Koilpillai (ICC, 1998)

Software radio issues in cellular base stations. - Kambiz C. Zangi; Ravinder David Koilpillai (IEEE J. Sel. Areas Commun., 1999)

Optimal and suboptimal algorithms for Doppler spread estimation in mobile radio systems. - Leonid G. Krasny; Hüseyin Arslan; Ravinder David Koilpillai; Sandeep Chennakeshu (PIMRC, 2000)

Doppler spread estimation for wireless mobile radio systems. - Hüseyin Arslan; Leonid G. Krasny; Ravinder David Koilpillai; Sandeep Chennakeshu (WCNC, 2000)

Physical layer study of high penetration paging for cellular systems. - Jiann-Ching Guey; Ali S. Khayrallah; Rajaram Ramesh; Y.-P. Eric Wang; Ravinder David Koilpillai (ICC, 2001)

Doppler spread estimation in mobile radio systems. - Leonid G. Krasny; Hüseyin Arslan; Ravinder David Koilpillai; Sandeep Chennakeshu (IEEE Commun. Lett., 2001)

Co-Ordinate Interleaved Spatial Multiplexing with Channel Knowledge at Transmitter and Receiver. - Kothapalli V. Srinivas; J. Klutto Milleth; Ravinder David Koilpillai; Krishnamurthy Giridhar (ICASSP (4), 2006)

Co-ordinate Interleaving over Parallel Gaussian Channels. - Kothapalli V. Srinivas; Krishnamurthy Giridhar; Ravinder David Koilpillai (CISS, 2007)

A New Diagonally Layered Spatial Multiplexing Scheme with Partial Channel Knowledge. - Kothapalli V. Srinivas; Krishnamurthy Giridhar; Ravinder David Koilpillai (GLOBECOM, 2008)

Signal space diversity for spatial multiplexing. - Gajanana Krishna; Kothapalli V. Srinivas; Srikrishna Bhashyam; Ravinder David Koilpillai (PIMRC, 2008)

Diversity Multiplexing Gain Tradeoff of Co-Ordinate Interleaved Spatial Multiplexing. - Kothapalli V. Srinivas; Ravinder David Koilpillai; Krishnamurthy Giridhar (VTC Spring, 2008)

Orthogonal decode and forward relaying with improved spectral efficiency. - Kothapalli V. Srinivas; Krishnamurthy Giridhar; Ravinder David Koilpillai (IEEE Commun. Lett., 2009)

Co-ordinate interleaved spatial multiplexing with channel state information. - Kothapalli V. Srinivas; Ravinder David Koilpillai; Srikrishna Bhashyam; Krishnamurthy Giridhar (IEEE Trans. Wirel. Commun., 2009)

SAIC receiver algorithms for VAMOS downlink transmission. - Mahesh Gupta Vutukuri; Rakesh Malladi; Kiran Kuchi; Ravinder David Koilpillai (ISWCS, 2011)

A rapidly deployable disaster communications system for developing countries. - Devendra Jalihal; Ravinder David Koilpillai; P. Khawas; S. Sampoornam; Sree Hari Nagarajan; Keiji Takeda; Kotaro Kataoka (ICC, 2012)

Fairness-based resource allocation in OFDMA downlink with imperfect CSIT. - Maria George; Ravinder David Koilpillai (WCSP, 2013)

Downlink Throughput Enhancement of a Cellular Network using Two-Hop User-Deployable Indoor Relays. - SendilRamKumar Devar; K. S. Karthik; Bhaskar Ramamurthi; Ravinder David Koilpillai (IEEE J. Sel. Areas Commun., 2013)

Reduced-state soft-output equalization for MIMO-ISI systems employing HOM. - Bharadwaj Satchidanandan; Kiran Kuchi; Ravinder David Koilpillai (NCC, 2014)

Generalized Reduced-State Vector Sequence Detection. - Bharadwaj Satchidanandan; Kiran Kuchi; Ravinder David Koilpillai (IEEE Commun. Lett., 2014)

200G system with PDM-16QAM: Performance evaluation and trade-offs. - Siddharth J. Varughese; Varughese Mathew; Smaranika Swain; Deepa Venkitesh; Ravinder David Koilpillai (NCC, 2015)

Performance comparison of optical fronthauling techniques for centralized radio access network. - Amol Delmade; Deepa Venkitesh; Ravinder David Koilpillai (ANTS, 2016)

Limited-Feedback Low-Encoding Complexity Precoder Design for Downlink of FDD Multi-User Massive MIMO Systems. - Biswajit Dutta; Rohit Budhiraja; Ravinder David Koilpillai (IEEE Trans. Commun., 2017)

Performance Analysis of Analog IF Over Fiber Fronthaul Link With 4G and 5G Coexistence. - Amol Delmade; Colm Browning; Arman Farhang; Nicola Marchetti; Linda E. Doyle; Ravinder David Koilpillai; Liam P. Barry; Deepa Venkitesh (JOCN, 2018)

High-Diversity Joint Precoder Design for Non-Concurrent Two-Way AF MIMO Relaying. - Biswajit Dutta; Rohit Budhiraja; Ravinder David Koilpillai (IEEE Trans. Commun., 2018)

Experimental Analysis of Noise Transfer in Optical Phase Conjugation Process in Nonlinear SOA. - Aneesh Sobhanan; Karthik Vijay Annur Myilswamy; Lakshmi Narayanan Venkatasubramani; Ravinder David Koilpillai; Deepa Venkitesh (OFC, 2019)

Faster-Than-Nyquist Signaling with Constraints on Pulse Shapes. - Akansh Jain; Sathwik Chadaga P; Nambi Seshadri; Ravinder David Koilpillai (PIMRC, 2019)

Low-Complexity Subspace-Based Multi-User Hybrid Precoding. - Biswajit Dutta; Rohit Budhiraja; Ravinder David Koilpillai (IEEE Commun. Lett., 2019)

Analysis of Quantized MRC-MRT Precoder For FDD Massive MIMO Two-Way AF Relaying. - Biswajit Dutta; Rohit Budhiraja; Ravinder David Koilpillai; Lajos Hanzo (IEEE Trans. Commun., 2019)

Large-System Analysis of AF Full-Duplex Massive MIMO Two-Way MRC/MRT Relaying. - Biswajit Dutta; Rohit Budhiraja; Nambi Seshadri; Ravinder David Koilpillai (IEEE Trans. Commun., 2020)

Hybrid-ARQ Protocol for Next Generation Wi-Fi Systems. - G. Shishir; Romil Sonigra; Nambi Seshadri; Ravinder David Koilpillai (COMSNETS, 2021)

Optical Phase Conjugation Using Nonlinear SOA for Nonlinearity and Dispersion Compensation of Coherent Multi-Carrier Lightwave Systems. - Lakshmi Narayanan Venkatasubramani; Aneesh Sobhanan; Anirudh Vijay; Ravinder David Koilpillai; Deepa Venkitesh (IEEE Access, 2021)

Widely Linear Filtering for Multiimpairment Compensation in Dispersion Managed mQAM Modulated Optical Systems. - Rekha Yadav; Lakshmi Narayanan Venkatasubramani; Ravinder David Koilpillai; Deepa Venkitesh (IEEE Access, 2022)

Deep-Learning based Equalization of Highly Compressed Faster Than Nyquist Signals. - Shubham Paul; Nambi Seshadri; Ravinder David Koilpillai (ANTS, 2023)

Synchronization techniques for underwater acoustic communications. - T. P. Sameer Babu; P. M. Ameer; Ravinder David Koilpillai (Int. J. Commun. Syst., 2023)

A Modified MRC Receiver for OTFS Systems with Oversampling. - Narendra Deconda; Nambi Seshadri; Ravinder David Koilpillai (WCNC, 2024)

Optical Upconversion of OFDM Signals for Next Generation Fronthauling Using Frequency Doubling and Quadrupling. - Sreeraj S. J; B. Lakshman; Radha Krishna Ganti; Ampalavanapillai Nirmalathas; Ravinder David Koilpillai; Deepa Venkitesh (IEEE Access, 2024)

Learning Robust Representations for Communications over Noisy Channels. - Sudharsan Senthil; Shubham Paul; Nambi Seshadri; Ravinder David Koilpillai (CoRR, 2024)

Compgen: Synthesis and Generation of Faces From Edgemaps. - Ruban Vishnu Pandian; Abhiram Rao Gorle; Karthick Krishna M; Nambi Seshadri; Ravinder David Koilpillai (ICASSP, 2025)

Cholesky Precoded Faster Than Nyquist Signalling with High Compression. - Shubham Paul; Nambi Seshadri; Ravinder David Koilpillai (NCC, 2025)

Learning Robust Representations for Communications over Interference-Limited Channels. - Shubham Paul; Sudharsan Senthil; Preethi Seshadri; Nambi Seshadri; Ravinder David Koilpillai (WCNC, 2025)

Low-Complexity Oversampled OTFS Receivers With Reduced Overhead. - Narendra Deconda; Srikrishna Bhashyam; Nambi Seshadri; Ravinder David Koilpillai (IEEE Open J. Commun. Soc., 2025)