11 papers
Non-orthogonal Multiple Access for Multi-cell Indoor VLC
T. Uday, Abhinav Kumar, L. Natarajan
In this letter, we propose a non-orthogonal multiple access (NOMA) based scheme for multi-cell indoor visible light communications (VLC), where cell-edge user is jointly served by…
An Umbrella Converse for Data Exchange: Applied to Caching, Computing, and Shuffling
Prasad Krishnan, Lakshmi Natarajan, V. Lalitha
The problem of data exchange between multiple nodes with storage and communication capabilities models several current multi-user communication problems like Coded Caching, Data Sh…
NOMA for Multiple Access Channel and Broadcast Channel in Indoor VLC
T. Uday, Abhinav Kumar, L. Natarajan
Orthogonal frequency division multiplexing (OFDM) based non-orthogonal multiple access (NOMA) has increased complexity and reduced spectral efficiency in visible light communicatio…
Improving Generalized Spatial Modulation using Translation Patterns
Lakshit Singla, Lakshmi Natarajan
Generalized spatial modulation (GSM) is a spectral-efficient technique used in multiple-input multiple-output (MIMO) wireless communications when the number of radio frequency chai…
Locally Decodable Index Codes
Lakshmi Natarajan, Prasad Krishnan, V. Lalitha +1
An index code for broadcast channel with receiver side information is locally decodable if each receiver can decode its demand by observing only a subset of the transmitted codewor…
Index Codes with Minimum Locality for Three Receiver Unicast Problems
Smiju Kodamthuruthil Joy, Lakshmi Natarajan
An index code for a broadcast channel with receiver side information is 'locally decodable' if every receiver can decode its demand using only a subset of the codeword symbols tran…