publications

journal articles
conference proceedings
invited talks
theses
(publication lists generated from BibTeX using Jekyll-Scholar)


journal articles

  1. A Code and Rate Equivalence Between Secure Network and Index Coding
    by L. Ong, B. N. Vellambi, J. Kliewer, and P. L. Yeoh
    in IEEE J. Sel. Areas Inf. Theory, 2(1), mar 2021
  2. Structural Characteristics of Two-Sender Index Coding
    by C. Thapa, L. Ong, and S. J. Johnson
    in Entropy, 21(6:615), jun 2019
  3. Cooperative Multi-Sender Index Coding
    by M. Li, L. Ong, and S. J. Johnson
    in IEEE Trans. Inf. Theory, 65(3), mar 2019
  4. Multi-Sender Index Coding for Collaborative Broadcasting: A Rank-Minimization Approach
    by M. Li, L. Ong, and S. J. Johnson
    in IEEE Trans. Commun., 67(2), feb 2019
  5. Corrections to "Interlinked Cycles for Index Coding: Generalizing Cycles and Cliques"
    by C. Thapa, L. Ong, and S. J. Johnson
    in IEEE Trans. Inf. Theory, 64(9), sep 2018
  6. Raptor Codes for Higher-Order Modulation Using a Multi-Edge Framework
    by S. Jayasooriya, M. Shirvanimoghaddam, L. Ong, and S. J. Johnson
    in IEEE Commun. Lett., 7(1), feb 2018
  7. Analysis and Design of Raptor Codes Using a Multi-Edge Framework
    by S. Jayasooriya, M. Shirvanimoghaddam, L. Ong, and S. J. Johnson
    in IEEE Trans. Commun., 65(12), dec 2017
  8. Optimal Finite-Length and Asymptotic Index Codes for Five or Fewer Receivers
    by L. Ong
    in IEEE Trans. Inf. Theory, 63(11), nov 2017
  9. Interlinked Cycles for Index Coding: Generalizing Cycles and Cliques
    by C. Thapa, L. Ong, and S. J. Johnson
    in IEEE Trans. Inf. Theory, 63(6), jun 2017
  10. The DoF Region of the Three-Receiver Gaussian MIMO Broadcast Channel with Receiver Message Side Information
    by B. Asadi, L. Ong, and S. J. Johnson
    in IEEE Trans. Commun., 65(5), may 2017
  11. Leveraging Receiver Message Side Information in Two-Receiver Broadcast Channels: A General Approach
    by B. Asadi, L. Ong, and S. J. Johnson
    in Entropy, 19(4:138), mar 2017
  12. On the Problem of Non-Zero Word Error Rates for Fixed-Rate Error Correction Codes in Continuous Variable Quantum Key Distribution
    by S. J. Johnson, A. M. Lance, L. Ong, M. Shirvanimoghaddam, T. C. Ralph, and T. Symul
    in New J. Phys., 19(2), feb 2017
  13. A Joint Optimization Technique for Multi-Edge Type LDPC Codes
    by S. Jayasooriya, M. Shirvanimoghaddam, L. Ong, and S. J. Johnson
    in IET Commun., 11(1), jan 2017
  14. A New Density Evolution Approximation for LDPC and Multi-Edge Type LDPC Codes
    by S. Jayasooriya, M. Shirvanimoghaddam, L. Ong, G. Lechner, and S. J. Johnson
    in IEEE Trans. Commun., 64(10), oct 2016
  15. The Single-Uniprior Index-Coding Problem: The Single-Sender Case and The Multi-Sender Extension
    by L. Ong, C. K. Ho, and F. Lim
    in IEEE Trans. Inf. Theory, 62(6), jun 2016
  16. A Multiway Relay Channel with Balanced Sources
    by L. Ong, and R. Timo
    in IEEE Trans. Commun., 63(12), dec 2015
  17. Optimal Coding Schemes for the Three-Receiver AWGN Broadcast Channel with Receiver Message Side Information
    by B. Asadi, L. Ong, and S. J. Johnson
    in IEEE Trans. Inf. Theory, 61(10), oct 2015
  18. On Index Coding in Noisy Broadcast Channels with Receiver Message Side Information
    by B. Asadi, L. Ong, and S. J. Johnson
    in IEEE Commun. Lett., 18(4), apr 2014
  19. On the Capacity of the Binary Symmetric Parallel-Relay Network
    by L. Ong, S. J. Johnson, and C. M. Kellett
    in Trans. Emerg. Telecommun. Technol., 25(2), feb 2014
  20. The Three-User Finite-Field Multi-Way Relay Channel with Correlated Sources
    by L. Ong, G. Lechner, S. J. Johnson, and C. M. Kellett
    in IEEE Trans. Commun., 61(8), aug 2013
  21. Multi-Way Relay Networks: Orthogonal Uplink, Source-Channel Separation and Code Design
    by R. Timo, G. Lechner, L. Ong, and S. J. Johnson
    in IEEE Trans. Commun., 61(2), feb 2013
  22. The Half-Duplex AWGN Single-Relay Channel: Full Decoding or Partial Decoding?
    by L. Ong, S. J. Johnson, and C. M. Kellett
    in IEEE Trans. Commun., 60(11), nov 2012
  23. On Capacity and Optimal Scheduling for the Half-Duplex Multiple-Relay Channel
    by L. Ong, M. Motani, and S. J. Johnson
    in IEEE Trans. Inf. Theory, 58(9), sep 2012
  24. On The Equal-Rate Capacity of the AWGN Multiway Relay Channel
    by L. Ong, C. M. Kellett, and S. J. Johnson
    in IEEE Trans. Inf. Theory, 58(9), sep 2012
  25. The Capacity Region of the Restricted Two-Way Relay Channel with Any Deterministic Uplink
    by L. Ong, and S. J. Johnson
    in IEEE Commun. Lett., 16(3), mar 2012
  26. Joint Channel-Network Coding Strategies for Networks with Low-Complexity Relays
    by S. J. Johnson, L. Ong, and C. M. Kellett
    in Eur. Trans. Telecommun., 22(7), nov 2011
  27. The Capacity Region of Multiway Relay Channels Over Finite Fields with Full Data Exchange
    by L. Ong, S. J. Johnson, and C. M. Kellett
    in IEEE Trans. Inf. Theory, 57(5), may 2011
  28. Optimal Routing for Decode-Forward in Cooperative Wireless Networks
    by Ong, and Motani
    in IEEE Trans. Commun., 58(8), aug 2010
  29. An Optimal Coding Strategy for the Binary Multi-Way Relay Channel
    by L. Ong, S. J. Johnson, and C. M. Kellett
    in IEEE Commun. Lett., 14(4), apr 2010
  30. Myopic Coding in Multiterminal Networks
    by L. Ong, and M. Motani
    in IEEE Trans. Inf. Theory, 54(7), jul 2008
  31. Coding Strategies for Multiple-Access Channels with Feedback and Correlated Sources
    by L. Ong, and M. Motani
    in IEEE Trans. Inf. Theory, 53(10), oct 2007
  32. On the Capacity of the Single Source Multiple Relay Single Destination Mesh Network
    by L. Ong, and M. Motani
    in Ad Hoc Netw., 5(6), aug 2007


conference proceedings

  1. Information Leakage in Zero-Error Source Coding: A Graph-Theoretic Perspective
    by Y. Liu, L. Ong, S. .J. Johnson, J. Kliewer, P. Sagedhi, and P. L. Yeoh
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Melbourne, Australia, jul 2021
  2. Secure Network and Index Coding Equivalence: The Last Piece of the Puzzle
    by L. Ong, and B. N. Vellambi
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Los Angeles, USA, jun 2020
  3. Improved Lower Bounds for Pliable Index Coding Using Absent Receivers
    by L. Ong, B. N. Vellambi, J. Kliewer, and P. Sagedhi
    in Proc. Int. Zurich Semin. Commun. (IZS), Zurich, Switzerland, feb 2020
  4. Can Marton Coding Alone Ensure Individual Secrecy?
    by J. Y. Tan, L. Ong, and B. Asadi
    in Proc. IEEE Inf. Theory Workshop (ITW), Visby, Sweden, aug 2019
  5. Centralized Caching with Shared Caches in Heterogeneous Cellular Networks (invited paper)
    by B. Asadi, and L. Ong
    in Proc. IEEE Int. Workshop Signal Process. in Wirel. Commun. (SPAWC), Cannes, France, jul 2019
  6. Optimal-Rate Characterisation for Pliable Index Coding using Absent Receivers
    by L. Ong, B. N. Vellambi, and J. Kliewer
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Paris, France, jul 2019
  7. The Secure Two-Receiver Broadcast Channel With One-Sided Receiver Side Information
    by J. Y. Tan, L. Ong, and B. Asadi
    in Proc. IEEE Inf. Theory Workshop (ITW), Guangzhou, China, nov 2018
  8. Centralized Caching with Unequal Cache Sizes
    by B. Asadi, L. Ong, and S. J. Johnson
    in Proc. IEEE Inf. Theory Workshop (ITW), Guangzhou, China, nov 2018
  9. Secure Network-Index Code Equivalence: Extension to Non-Zero Error and Leakage
    by L. Ong, J. Kliewer, and B. N. Vellambi
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Vail, USA, jun 2018
  10. Joint Optimization of User Association Data, Delivery Rate and Precoding for Cache-Enabled F-RANs
    by T. T. Vu, D. T. Ngo, L. Ong, S. Durrani, and R. H. Middleton
    in Proc. IEEE Glob. Telecomm. Conf. (GLOBECOM), Singapore, dec 2017
  11. An Improved Caching Scheme for Nonuniform Demands and Its Optimal Allocation
    by H. Ding, and L. Ong
    in Proc. IEEE Int. Conf. Comput. Commun. (ICCC), Chengdu, China, dec 2017
  12. Improved Bounds for Multi-Sender Index Coding
    by M. Li, L. Ong, and S. J. Johnson
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Aachen, Germany, jun 2017
  13. An Equivalence Between Secure Network and Index Coding
    by L. Ong, B. N. Vellambi, J. Kliewer, and P. L. Yeoh
    in Proc. IEEE Glob. Telecomm. Conf. (GLOBECOM) Workshop Netw. Coding Theory Appl. (Netcod), Washington, USA, dec 2016
  14. Graph-Theoretic Approaches to Two-Sender Index Coding
    by C. Thapa, L. Ong, and S. J. Johnson
    in Proc. IEEE Glob. Telecomm. Conf. (GLOBECOM) Workshop Netw. Coding Theory Appl. (Netcod), Washington, USA, dec 2016
  15. NOMA’s Offline Power Allocation and Corresponding Algorithms: A Design and its Evaluation
    by Z. He, J. Kao, and L. Ong
    in Proc. IEEE Int. Conf. Comput. Commun. (ICCC), Chengdu, China, oct 2016
  16. Secure Index Coding: Existence and Construction
    by L. Ong, B. N. Vellambi, P. L. Yeoh, J. Kliewer, and J. Yuan
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Barcelona, Spain, jul 2016
  17. A Unified Inner Bound for the Two-Receiver Memoryless Broadcast Channel with Channel State and Message Side Information
    by B. Asadi, L. Ong, and S. J. Johnson
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Barcelona, Spain, jul 2016
  18. Generalized Interlinked Cycle Cover for Index Coding
    by C. Thapa, L. Ong, and S. J. Johnson
    in Proc. IEEE Inf. Theory Workshop (ITW), Jeju Island, Korea, oct 2015
  19. The Half-Duplex Gaussian Two-Way Relay Channel with Direct Links
    by L. Ong
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Hong Kong, jun 2015
  20. Capacity Results for the Multi-Way Relay Channel with Common Messages
    by L. Ong
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Hong Kong, jun 2015
  21. A Unified Scheme for Two-Receiver Broadcast Channels with Receiver Message Side Information
    by B. Asadi, L. Ong, and S. J. Johnson
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Hong Kong, jun 2015
  22. A New Index Coding Scheme Exploiting Interlinked Cycles
    by C. Thapa, L. Ong, and S. J. Johnson
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Hong Kong, Hong Kong, jun 2015
  23. Coding Schemes for a Class of Receiver Message Side Information in AWGN Broadcast Channels
    by B. Asadi, L. Ong, and S. J. Johnson
    in Proc. IEEE Inf. Theory Workshop (ITW), Hobart, Australia, nov 2014
  24. Optimization of Graph Based Codes for Belief Propagation Decoding
    by S. Jayasooriya, S. J. Johnson, L. Ong, and R. Berretta
    in Proc. IEEE Inf. Theory Workshop (ITW), Hobart, Australia, nov 2014
  25. Optimal Coding Functions for Pairwise Message Sharing on Finite-Field Multi-Way Relay Channels
    by L. Ong, S. J. Johnson, and C. .M. Kellett
    in Proc. IEEE Int. Conf. Commun. (ICC), Sydney, Australia, jun 2014
  26. A New Class of Index Coding Instances Where Linear Coding is Optimal
    by L. Ong
    in Proc. Workshop Netw. Coding Theory Appl. (Netcod), Aalborg, Denmark, jun 2014
  27. The Capacity of Three-Receiver AWGN Broadcast Channels with Receiver Message Side Information
    by B. Asadi, L. Ong, and S. J. Johnson
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Honolulu, USA, jun 2014
  28. Linear Codes are Optimal for Index-Coding Instances with Five or Fewer Receivers
    by L. Ong
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Honolulu, USA, jun 2014
  29. The Multi-Sender Multicast Index Coding
    by L. Ong, F. Lim, and C. K. Ho
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Istanbul, Turkey, jul 2013
  30. Capacity Results for Two Classes of Three-Way Channels
    by L. Ong
    in Proc. Int. Symp. Commun. Inf. Technol. (ISCIT), Gold Coast, Australia, oct 2012
  31. The Finite Field Multi-Way Relay Channel with Correlated Sources: Beyond Three Users
    by L. Ong, R. Timo, and S. J. Johnson
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Cambridge, USA, jul 2012
  32. The Capacity Region of Restricted Multi-Way Relay Channels with Deterministic Uplinks
    by L. Ong, and S. J. Johnson
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Cambridge, USA, jul 2012
  33. Optimal Index Codes for a Class of Multicast Networks with Receiver Side Information
    by L. Ong, and C. K. Ho
    in Proc. IEEE Int. Conf. Commun. (ICC), Ottawa, Canada, jun 2012
  34. The Finite Field Multi-Way Relay Channel with Correlated Sources: The Three-User Case
    by L. Ong, R. Timo, G. Lechner, S. J. Johnson, and C. .M. Kellett
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Saint Petersburg, Russia, jul 2011
  35. On Achievable Rate Regions of the Asymmetric AWGN Two-Way Relay Channel
    by L. Ong, C. .M. Kellett, and S. J. Johnson
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Saint Petersburg, Russia, jul 2011
  36. Sparse Graph Codes for the Two-Way Relay Network with Correlated Sources
    by G. Lechner, R. Timo, and L. Ong
    in Proc. Data Compression Conf. (DCC), Snowbird, USA, mar 2011
  37. The Two-Way Relay Network with Arbitrarily Correlated Sources and an Orthogonal MAC
    by R. Timo, L. Ong, and G. Lechner
    in Proc. Data Compression Conf. (DCC)), Snowbird, USA, mar 2011
  38. Functional-Decode-Forward for the General Discrete Memoryless Two-Way Relay Channel
    by L. Ong, C. .M. Kellett, and S. J. Johnson
    in Proc. IEEE Int. Conf. Commun. Syst. (ICCS), Singapore, nov 2010
  39. The Capacity of a Class of Multi-Way Relay Channels
    by L. Ong, S. J. Johnson, and C. .M. Kellett
    in Proc. IEEE Int. Conf. Commun. Syst. (ICCS), Singapore, nov 2010
  40. Capacity Theorems for the AWGN Multi-Way Relay Channel
    by L. Ong, C. .M. Kellett, and S. J. Johnson
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Austin, USA, jun 2010
  41. The Binary-Symmetric Parallel-Relay Network
    by L. Ong, S. J. Johnson, and C. .M. Kellett
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Austin, USA, jun 2010
  42. Achievable Rate Regions of the Butterfly Network with Noisy Links and End-to-End Error Correction
    by L. Ong, S. J. Johnson, and C. .M. Kellett
    in Proc. IEEE Inf. Theory Workshop (ITW), Taormina, Italy, oct 2009
  43. Transmission Schedule Optimization for Half-Duplex Multiple-Relay Networks
    by W. Wang, L. Ong, and M. Motani
    in Proc. Symp. Model. Optim. Mob. Ad Hoc Wirel. Netw. (WiOpt), Seoul, South Korea, jun 2009
  44. Optimal Schedules for the D-node Half Duplex Phase Fading MRC
    by L. Ong, S. J. Johnson, and M. Motani
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Seoul, South Korea, jun 2009
  45. Achievable Rates and Schedules for Half Duplex Phase Fading Multiple-Relay Networks
    by L. Ong, W. Wang, and M. Motani
    in Proc. Int. Symp. Inf. Theory Appl. (ISITA), Auckland, New Zealand, dec 2008
  46. Achievable Rates and Optimal Schedules for Half Duplex Multiple-Relay Networks
    by L. Ong, W. Wang, and M. Motani
    in Proc. Allerton Conf. Commun. Control Comput. (Allerton), Monticello, USA, sep 2008
  47. Optimal Routing for Decode-and-Forward based Cooperation in Wireless Networks
    by L. Ong, and M. Motani
    in Proc. IEEE Commun. Soc. Conf. Sens. Ad Hoc Commun. Netw. (SECON), San Diego, USA, jun 2007
  48. Optimal Routing for the Gaussian Multiple-Relay Channel with Decode-and-Forward
    by L. Ong, and M. Motani
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Nice, France, jun 2007
  49. The Multiple Access Channel with Feedback and Correlated Sources
    by L. Ong, and M. Motani
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Seattle, USA, jul 2006
  50. The Capacity of the Single Source Multiple Relay Single Destination Mesh Network
    by L. Ong, and M. Motani
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Seattle, USA, jul 2006
  51. Myopic Coding in Multiple Relay Channels
    by L. Ong, and M. Motani
    in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Adelaide, Australia, sep 2005
  52. Achievable Rates for the Multiple Access Channels with Feedback and Correlated Sources
    by L. Ong, and M. Motani
    in Proc. Allerton Conf. Commun. Control Comput. (Allerton), Monticello, USA, sep 2005
  53. Myopic Coding in Wireless Networks
    by L. Ong, and M. Motani
    in Proc. Conf. Inf. Sci. Syst. (CISS), Baltimore, USA, mar 2005


invited talks

  1. Pliable Communications
    by L. Ong
    at the Australian Communications Theory Workshop (AusCTW 2020) Webminar, Oct. 9, 2020
  2. Index Coding – What to Do After Caching?
    by L. Ong
    at National University of Singapore, Dec. 10, 2018.
  3. Information-Theoretic Security via Side Information
    by L. Ong
    at the Australian Communications Theory Workshop, Canberra, Australia, Jan. 18, 2017
  4. Index coding – improving broadcast rates using side information
    by L. Ong
    at the Celebration of Shannon’s 100th Birthday, University of Technology Sydney, Australia, Apr. 29, 2016
  5. Linear Index Codes are Optimal Up to Five Nodes
    by L. Ong
    at Workshop at BIRS: Between Shannon and Hamming: Network Information Theory and Combinatorics (15w5130), Banff, Canada, Mar. 3, 2015 [slides]
  6. Functional-Decode-Forward for Multi-Way Relay Channels
    by L. Ong
    at Institute for Infocomm Research (I2R), Singapore, Nov. 23, 2010
    (sponsored by IEEE Vehicular Technology Society (VTS) Chapter, Singapore Section)
  7. Functional-Decode-Forward for Multi-Way Relay Channels
    by L. Ong
    at Institute for Telecommunications Research (ITR), Adelaide, Australia, Aug. 17, 2010
  8. Coding Strategies for Relay Networks
    by L. Ong
    at the Australian Communications Theory Workshop, Canberra, Australia, Feb. 4, 2010


theses

  1. Cooperative Coding and Routing in Multiple-Terminal Wireless Networks
    by L. Ong
    PhD Thesis, National University of Singapore, Singapore, dec 2007
  2. An Investigation of an Agent-Based Scheduling in Decentralised Manufacturing Control
    by L. Ong
    MPhil Thesis, University of Cambridge, UK, aug 2003
  3. Simulation Study of Adaptive Filters for Receiver Design on Fading
    by L. Ong
    BEng Thesis, National University of Singapore, Singapore, jul 2001