Publications

Preprints

• Vinayak Ramkumar, Myna Vajha, SB Balaji, M Nikhil Krishnan, Birenjith Sasidharan, P Vijay Kumar: Codes for Distributed Storage. [ArXiv].

• Myna Vajha, Vinayak Ramkumar, Mayank Jhamtani, P Vijay Kumar: On Sliding Window Approximation of Gilbert-Elliott Channel for Delay Constrained Setting. [ArXiv].

• Birenjith Sasidharan, Myna Vajha and P. Vijay Kumar: An Explicit, Coupled-Layer Construction of a High-Rate MSR Code with Low Sub-Packetization Level, Small Field Size and All-Node Repair. [ArXiv].

• S. B. Balaji, K. P. Prasanth, P. Vijay Kumar: Binary Codes with Locality for Four Erasures. [ArXiv].

• Raviteja Upadrashta, Tarun Choubisa, A. Praneeth, Tony Gracious, V. S. Aswath, P. Vijay Kumar, Sripad S. Kowshik, Hari Prasad Gokul R, Tamma V. Prabhakar: Animation and Chirplet-Based Development of a PIR Sensor Array for Intruder Classification in an Outdoor Environment. [ArXiv].

Journals

2021 - 2024

1. Myna Vajha, Vinayak Ramkumar, M Nikhil Krishnan, P. Vijay Kumar, ”Explicit Rate-Optimal Streaming Codes With Smaller Field Size”, IEEE Transactions on Information Theory, Vol. 70, May. 2024, PP. 3242-3261.

2. Myna Vajha, S. B Balaji, P Vijay Kumar,”Small-d MSR Codes with Optimal Access, Optimal Sub-Packetization and Linear Field Size”, IEEE Transactions on Information Theory, Vol. 69, Jul. 2023, PP. 4303-4332.

3. S. B Balaji, M Vajha, PV Kumar,”Lower Bounds on the Sub-Packetization Level of MSR Codes and Characterizing Optimal-Access MSR Codes Achieving the Bound”,IEEE Transactions on Information Theory, Vol. 68, No. 10, Jun 2022, PP. 6452-6471.

2015 - 2020

1. M. Nikhil Krishnan, Deeptanshu Shukla, and P. Vijay Kumar,“Low Field-size, Rate-Optimal Streaming Codes for Channels With Burst and Random Erasures”, IEEE Communications Letters (accepted)

2. M. Nikhil Krishnan, Deeptanshu Shukla, and P. Vijay Kumar, “Rate-Optimal Streaming Codes for Channels With Burst and Random Erasures,”IEEE Trans. on Information Theory, Vol. 66, No. 8, Aug. 2020, pp.4869-4891

3. S. B. Balaji, Ganesh R. Kini , and P. Vijay Kumar , “A Tight Rate Bound and Matching Construction for Locally Recoverable Codes With Sequential Recovery From Any Number of Multiple Erasures,” IEEE Trans. on Information Theory, Vol. 66, No. 2, Feb. 2020, pp.1023-1052.

4. Nikhil Krishnan*, Vinayak Ramkumar*, Myna Vajha*, P. Vijay Kumar*, “Simple Streaming Codes for Reliable, Low-Latency Communication,” in IEEE Communications Letters, Vol. 24, No. 2, pp. 249-253, Feb. 2020.

5. N. Prakash, V. Lalitha, S. B. Balaji, P. Vijay Kumar, “Codes with Locality for Two Erasures”, IEEE Trans. Inform. Theory,Vol. 65 No. 12 pp. 7771 - 7789, Dec. 2019.

6. Balaji S. B, M. Nikhil Krishnan, Myna Vajha, Vinayak Ramkumar, Birenjith Sasidharan, P. Vijay Kumar, ‘‘Erasure coding for distributed storage: an overview,’’ Sci China Inf Sci, October 2018.

7. M Nikhil Krishnan, Bhagyashree Puranik, P Vijay Kumar, Itzhak Tamo, Alexander Barg: Exploiting Locality for Improved Decoding of Binary Cyclic Codes. IEEE Transactions on Communications Vol.66 No.6 pp.2346 - 2358, June 2018.

8. Guang Gong, Tor Helleseth, P. Vijay Kumar: Solomon W. Golomb - Mathematician, Engineer, and Pioneer. IEEE Trans. Information Theory, Vol.64 No.4, pp. 2844 - 2857, April 2018.

9. K. V. Rashmi, Nihar B. Shah, Kannan Ramchandran, P. Vijay Kumar: Information-Theoretically Secure Erasure Codes for Distributed Storage. IEEE Trans. Information Theory Vol.64 No.3, pp. March 2018.

10. Birenjith Sasidharan, N. Prakash, M. Nikhil Krishnan, Myna Vajha, Kaushik Senthoor and P. Vijay Kumar: Outer Bounds on the Storage-Repair Bandwidth Tradeoff of Exact-Repair Regenerating Codes. International Journal of Information and Coding Theory, Special Issue on “Information and Coding Theory for Data Storage” (2016). pdf

11. Chao Tian, Birenjith Sasidharan, Vaneet Aggarwal, Vinay A. Vaishampayan, P. Vijay Kumar: Layered Exact-Repair Regenerating Codes via Embedded Error Correction and Block Designs. IEEE Trans. Information Theory Vol.61, No.4,pp. 1933-1947, 2015.

• * indicates equal contribution

Conference

2023

2023

• M N Krishnan M; Myna Vajha; Vinayak Ramkumar; P Vijay Kumar: Explicit Information-Debt-Optimal Streaming Codes with Small Memory. ISIT 2023.

• Vinayak Ramkumar; Shobhit Bhatnagar; P Vijay Kumar: Near-Optimal Streaming Codes with Linear Field Size. ISIT 2023.

2022

• V Ramkumar, MN Krishnan, M Vajha, PV Kumar: On Information-Debt-Optimal Streaming Codes With Small Memory, ISIT 2022.

• S Singhvi, R Gayathri, PV Kumar: Rate-Optimal Streaming Codes Over the Three-Node Decode-And-Forward Relay Network, ISIT 2022.

• S Bhatnagar, V Ramkumar, PV Kumar: Rate-Optimal Streaming Codes with Smaller Field Size Under Less-Stringent Decoding-Delay Requirements, ITW 2022.

2021

• Vinayak Ramkumar, Myna Vajha, P. Vijay Kumar: Locally Recoverable Streaming Codes for Packet-Erasure Recovery. ITW 2021.

• Shobhit Bhatnagar, Biswadip Chakraborti and P. Vijay Kumar: Streaming codes for handling a combination of burst and random erasures. ITW 2021.

• Myna Vajha, Vinayak Ramkumar, Mayank Jhamtani, P. Vijay Kumar: On the Performance Analysis of Streaming Codes over the Gilbert-Elliott Channel. ITW 2021.

• Myna Vajha,Vinayak Ramkumar, M Nikhil Krishnan,P. Vijay Kumar: Explicit Rate-Optimal Streaming Codes with Smaller Field Size. ISIT 2021

• Vinayak Ramkumar, Myna Vajha, P Vijay Kumar, Generalized Simple Streaming Codes from MDS Codes. ISIT 2021.

• P Vijay Kumar, Dileep Dharmappa, Sugandh Mishra: Interleaved Z4-Linear Sequences with Improved Correlation for Satellite Navigation. ISIT 2021.

2020

• Vinayak Ramkumar, Myna Vajha,M. Nikhil Krishnan, P. Vijay Kumar: Staggered Diagonal Embedding Based Linear Field Size Streaming Codes. ISIT 2020.[pdf]

2019

• M. Nikhil Krishnan, Deeptanshu Shukla, P. Vijay Kumar: A Quadratic Field-Size Rate-Optimal Streaming Code for Channels with Burst and Random Erasures. Finalist - Jack Keil Wolf Student Paper Award, ISIT 2019

• Myna Vajha, V. S. Chaitanya Mukka, P. Vijay Kumar:Backtracking and Look-Ahead Decoding Algorithms for Improved Successive Cancellation Decoding Performance of Polar Codes. ISIT 2019.

• Vinayak Ramkumar, P Vijay Kumar: Coded MapReduce Schemes Based on Placement Delivery Array. ISIT 2019.

2018

• M. Nikhil Krishnan, Anantha Narayanan R., P. Vijay Kumar: Codes with Combined Locality and Regeneration Having Optimal Rate, dmin and Linear Field Size. ISIT 2018

• M N Krishnan, P V Kumar: Rate-Optimal Streaming Codes for Channels with Burst and Isolated Erasures. ISIT 2018

• M Vajha, B S Babu, P V Kumar: Explicit MSR Codes with Optimal Access, Optimal Sub-Packetization and Small Field Size for d= k+1, k+2, k+3. ISIT 2018

• S B Balaji, P V Kumar: A Tight Lower Bound on the Sub-Packetization Level of Optimal-Access MSR and MDS Codes. ISIT 2018

• Balaji Srinivasan Babu, Ganesh Kini and P Vijay Kumar: A Rate-Optimal Construction of Codes with Sequential Recovery with Low Block Length. NCC 2018

• Vinayak Ramkumar, Myna Vajha and P Vijay Kumar: Determining the Generalized Hamming Weight Hierarchy of the Binary Projective Reed-Muller Code. NCC 2018

• Myna Vajha, Vinayak Ramkumar, Bhagyashree Puranik, Ganesh R. Kini, Elita Lobo, Birenjith Sasidharan, P. Vijay Kumar, Alexandar Barg, Min Ye, Srinivasan Narayanamurthy, Syed Hussain, Siddhartha Nandi: Clay Codes: Moulding MDS Codes to Yield an MSR Code. USENIX, FAST 2018 [pdf]

2017

• Tarun Choubisa, Sampad B Mohanty, Kodur Krishna Chaitanya, Mohan Kashyap, A Sridhar, P Akshay Singh, Vijay Kumar P: A reduced-complexity, reduced-power camera system for intrusion classification in an outdoor setting. ICACCI 2017

• Tarun Choubisa, Mohan Kashyap, Sampad B. Mohanty, P. Vijay Kumar: Comparing chirplet-based classification with alternate feature-extraction approaches for outdoor intrusion detection using a pir sensor platform. ICACCI 2017

• S. B. Balaji, Ganesh R. Kini and P. Vijay Kumar: A Tight Rate Bound and a Matching Construction for Locally Recoverable Codes with Sequential Recovery From Any Number of Multiple Erasures. Finalist - Jack Keil Wolf Student Paper Award, ISIT 2017 [ArXiv]

• Myna Vajha, Vinayak Ramkumar and P. Vijay Kumar: Binary, Shortened Projective Reed Muller Codes for Coded Private Information Retrieval. ISIT 2017 [Arxiv]

• S.B.Balaji, P.Vijay Kumar: Bounds on Codes with Locality and Availability. ISIT 2017 [ArXiv]

• M. Nikhil Krishnan, Bhagyashree Puranik, P. Vijay Kumar, Itzhak Tamo and Alexander Barg: A Study on the Impact of Locality in the Decoding of Binary Cyclic Codes. ISIT 2017 [ArXiv]

• Birenjith Sasidharan, Myna Vajha, P. Vijay Kumar: An Explicit, Coupled-Layer Construction of a High-Rate MSR Code with Low Sub-Packetization Level, Small Field Size and d<(n-1). ISIT 2017 [ArXiv]

• Tarun Choubisa, Sampad B. Mohanty, Mohan Kashyap, Shivangi Gambhir, Kodur Krishna Chaitanya, A. Sridhar, P. Vijay Kumar: An Optical-Camera Complement to a PIR Sensor Array for Intrusion Detection and Classfication in an Outdoor Environment. LCN Workshops 2017

2016

• Tarun Choubisa, Raviteja Upadrashta, Sumankumar Panchal, A. Praneeth, Ranjitha H. V., Kaushik Senthoor, Abhijit Bhattacharya, S. V. R. Anand, Malati Hegde, Anurag Kumar, P. Vijay Kumar, Madhuri Sheethala Iyer, Abhirami Sampath, Prabhakar T. V., Joy Kuri, Ashwath Narayan Singh, Challenges in Developing and Deploying a PIR Sensor-Based Intrusion Classfication System for an Outdoor Environment, Eleventh IEEE International Workshop on Practical Issues in Building Sensor Network Applications (IEEE SenseApp 2016), November, 2016, Dubai, United Arab Emirates (UAE)

• S. B. Balaji, K. P. Prasanth, P. Vijay Kumar: Binary codes with locality for multiple erasures having short block length. ISIT 2016 [ArXiv] [ISIT].

• M Nikhil Krishnan, P. Vijay Kumar: On MBR codes with replication. ISIT 2016 [ArXiv] [ISIT].

2015

1. Birenjith Sasidharan, Gaurav Kumar Agarwal, P. Vijay Kumar: Codes with hierarchical locality. ISIT 2015: 1257-1261

2. S. B. Balaji, P. Vijay Kumar: On partial maximally-recoverable and maximally-recoverable codes. ISIT 2015: 1881-1885

3. Birenjith Sasidharan, Gaurav Kumar Agarwal, P. Vijay Kumar: A high-rate MSR code with polynomial sub-packetization level. ISIT 2015: 2051-2055

4. Raviteja Upadrashta, Tarun Choubisa, V. S. Aswath, A. Praneeth, Ajit Prabhu, Siddhant Raman, Tony Gracious, P. Vijay Kumar, Sripad S. Kowshik, Madhuri Sheethala Iyer, Tamma V. Prabhakar: An animation-and-chirplet based approach to intruder classification using PIR sensing. ISSNIP 2015: 1-6

5. Kaushik Senthoor, Birenjith Sasidharan, P. Vijay Kumar: Improved layered regenerating codes characterizing the exact-repair storage-repair bandwidth tradeoff for certain parameter sets. ITW 2015: 1-5

2014

1. M. Nikhil Krishnan, N. Prakash, V. Lalitha, Birenjith Sasidharan, P. Vijay Kumar, Srinivasan Narayanamurthy, Ranjit Kumar, Siddhartha Nandi: Evaluation of Codes with Inherent Double Replication for Hadoop. HotStorage 2014

2. N. Prakash, V. Lalitha, P. Vijay Kumar: Codes with locality for two erasures. ISIT 2014: 1962-1966

3. Birenjith Padmakumari Sasidharan, Kaushik Senthoor, P. Vijay Kumar: An improved outer bound on the storage-repair-bandwidth tradeoff of exact-repair regenerating codes. ISIT 2014: 2430-2434

2013

1. Birenjith Sasidharan, P. Vijay Kumar: On the interior points of the storage-repair bandwidth tradeoff of regenerating codes. Allerton 2013: 788-795

2. Govinda M. Kamath, Natalia Silberstein, N. Prakash, Ankit Singh Rawat, V. Lalitha, Onur Ozan Koyluoglu, P. Vijay Kumar, Sriram Vishwanath:Explicit MBR all-symbol locality codes. ISIT 2013: 504-508

3. Govinda M. Kamath, N. Prakash, V. Lalitha, P. Vijay Kumar: Codes with local regeneration. ISIT 2013: 1606-1610

4. Birenjith Sasidharan, P. Vijay Kumar:High-rate regenerating codes through layering.ISIT 2013: 1611-1615

5. Govinda M. Kamath, N. Prakash, V. Lalitha, P. Vijay Kumar:Codes with local regeneration. ITA 2013: 1-5

2012

1. K. V. Rashmi, Nihar B. Shah, Kannan Ramchandran, P. Vijay Kumar: Regenerating codes for errors and erasures in distributed storage. ISIT 2012: 1202-1206

2. N. Prakash, Govinda M. Kamath, V. Lalitha, P. Vijay Kumar: Optimal linear codes with a local-error-correction property. ISIT 2012: 2776-2780

3. Govinda M. Kamath, N. Prakash, V. Lalitha, and P. Vijay Kumar. “Optimal Linear Codes with a Local-Error-Correction Capability” (Invited) in IEEE Information Theory and Applications (ITA) workshop, San Diego, Feb. 2012.

4. Govinda M. Kamath and P. Vijay Kumar. “Regenerating Codes: A Reformulated Storage- Bandwidth Trade-off and a New Construction.” in Proc. of the National Conference on Communation 2012(NCC 2012), IIT Karagpur, India.

5. V. Lalitha, N. Prakash, Govinda M. Kamath and P. Vijay Kumar. “On T-Designs and Bounds Relating Query Complexity to Error Resilience in Locally Correctable Codes.” in Proc of the National Conference on Communation 2012(NCC 2012), IIT Karagpur, India.

2011

1. N. E. Venkatesan, Tarun Agarwal, V. Lalitha, P. Vijay Kumar: Distributed intrusion detection in the presence of correlated sensor readings: Signal-space and communication-complexity view-point. Ad Hoc Networks 9(6): 1015-1027 (2011)

2. V. Lalitha, N. Prakash, K. Vinodh, P. Vijay Kumar, S. Sandeep Pradhan: A nested linear codes approach to distributed function computation over subspaces. Allerton 2011: 1202-1209

3. Nihar B. Shah, K. V. Rashmi, P. Vijay Kumar: Information-Theoretically Secure Regenerating Codes for Distributed Storage. GLOBECOM 2011: 1-5

4. K. V. Rashmi, Nihar B. Shah, P. Vijay Kumar: Enabling node repair in any erasure code for distributed storage. ISIT 2011: 1235-1239

2010

1. K. V. Rashmi, Nihar B. Shah, P. Vijay Kumar, Kannan Ramchandran: Explicit and optimal exact-regenerating codes for the minimum-bandwidth point in distributed storage. ISIT 2010: 1938-1942

2. Nihar B. Shah, K. V. Rashmi, P. Vijay Kumar: A flexible class of regenerating codes for distributed storage. ISIT 2010: 1943-1947

3. K. V. Rashmi, Nihar B. Shah, P. Vijay Kumar, Kannan Ramchandran: Explicit and optimal codes for distributed storage. ITA 2010: 240-244

4. Nihar B. Shah, K. V. Rashmi, P. Vijay Kumar, Kannan Ramchandran: Regenerating Codes for Distributed Storage Networks. WAIFI 2010: 215-223

5. K. Vinodh, V. Lalitha, N. Prakash, “On the Achievable Rates of Sources having a Group Alphabet in a Distributed Source Coding Setting,” Forty-Eighth Annual Allerton Conference on Communication, Control, and Computing, September 29 October 1, 2010, Allerton Retreat Center, Monticello, Illinois.

6. Nihar B. Shah, K. V. Rashmi, P. Vijay Kumar and Kannan Ramchandran, “Explicit Codes Uniformly Reducing Repair Bandwidth in Distributed Storage,” presented at the The Sixteenth National Conference on Communications (NCC 2010), IIT Madras, Jan. 28-31, 2010.

7. Nihar B. Shah, K. V. Rashmi, P. Vijay Kumar and Kannan Ramchandran, “Interference Alignment as a Tool in Network Coding as Applied to Distributed Storage,” presented at the The Sixteenth National Conference on Communications (NCC 2010), IIT Madras, Jan. 28-31, 2010.

8. K. Vinodh, Avik Ray and P. Vijay Kumar, “On Approximately Universal Schemes for Twohop Network,” presented at the The Sixteenth National Conference on Communications (NCC 2010), IIT Madras, Jan. 28-31, 2010.

9. Nihar B. Shah, K. V. Rashmi, P. Vijay Kumar, Kannan Ramchandran, “Explicit Codes Minimizing Repair Bandwidth for Distributed Storage,” presented at the 2010 IEEE Inform. Th. Workshop, Cairo, Jan. 6-8, 2010.

10. K. Sreeram, P. S. Birenjith, P. Vijay Kumar, “ DMT of Multi-hop Cooperative Networks,” (invited paper) presented at the 2010 IEEE Inform. Th. Workshop, Cairo, Jan. 6-8, 2010.

2009

1. K. V. Rashmi, Nihar B. Shah, P. Vijay Kumar and Kannan Ramchandran, “Explicit Construction of Optimal Exact Regenerating Codes for Distributed Storage,” Proc. Allerton Conference on Control, Computing and Communication, Urbana-Champaign, Sep. 2009.

2. Abu Sajana R., Ramanathan Subramanian, P. Vijay Kumar, Syam Krishnan, Bharadwaj Amrutur,Jeena Sebastian, Malati Hegde, S. V. R. Anand, “A Low-Complexity Algorithm for Intrusion Detection in a PIR-Based Wireless Sensor Network,” proceedings of the Fifth International Conference on Intelligent Sensors, Sensor Networks and Information Processing, Melbourne, December 7-10, 2009.

3. Petros Elia, P. Vijay Kumar: Space-time codes that are approximately universal for the parallel, multi-block and cooperative DDF channels. ISIT 2009: 2813-2817

4. Avik Ray, Ghaya Rekaya-Ben Othman, P. Vijay Kumar, K. Vinodh: Ideal structure of the Silver code. ISIT 2009: 2818-2822

Please find the complete list at [journals] [conference]