Inventor
SUNDARESAN KARTHIKEYAN
US77 patents
⚠️ This page may combine multiple inventors who share the name “SUNDARESAN KARTHIKEYAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC LAB AMERICA INC
37 patentsUS9125047B2Sep 1, 2015
Cloud-based radio access network for small cells
NEC LAB AMERICA INC37 citations94
US9936414B2Apr 3, 2018
Enabling long-term-evolution/wifi coexistence
NEC LAB AMERICA INC22 citations92
US10292054B2May 14, 2019
Enabling technologies for LTE on unlicensed spectrum
NEC LAB AMERICA INC18 citations86
US10936927B2Mar 2, 2021
Tagging objects in indoor spaces using ambient, distributed backscatter
NEC LAB AMERICA INC8 citations83
US10122547B2Nov 6, 2018
Enabling high-bandwidth, responsive mobile applications in LTE networks
NEC LAB AMERICA INC12 citations83
US9537587B2Jan 3, 2017
Efficient large-scale multiple input multiple output communications
NEC LAB AMERICA INC10 citations83
US9413474B2Aug 9, 2016
Efficient large-scale multiple input multiple output communications
NEC LAB AMERICA INC11 citations83
US8380133B2Feb 19, 2013
Beamforming methods and systems employing measured power at a receiver to perform channel estimation
NEC LAB AMERICA INC7 citations82
US12339366B2Jun 24, 2025
LiDAR-driven mmWave beam management
NEC LAB AMERICA INC3 citations73
US10852415B2Dec 1, 2020
Backscatter-aided navigation system
NEC LAB AMERICA INC2 citations73
US10852414B2Dec 1, 2020
In-home inventory and location system
NEC LAB AMERICA INC2 citations73
US10852416B2Dec 1, 2020
In-store interaction and location system for interfacing users with products
NEC LAB AMERICA INC3 citations73
US10852413B2Dec 1, 2020
Tagging objects in indoor spaces using ambient, distributed backscatter
NEC LAB AMERICA INC2 citations73
US9723566B2Aug 1, 2017
Interference cancellation
NEC LAB AMERICA INC2 citations73
US11620462B2Apr 4, 2023
Reading passive wireless tags using commodity devices
NEC LAB AMERICA INC2 citations72
US10470243B2Nov 5, 2019
Implementing wireless communication networks using unmanned aerial vehicles
NEC LAB AMERICA INC4 citations72
US10405373B2Sep 3, 2019
Distributed core architecture for implementing wireless communication networks
NEC LAB AMERICA INC2 citations72
US9521560B2Dec 13, 2016
Multicell beamforming system and methods for OFDMA small-cell networks
NEC LAB AMERICA INC5 citations72
US10091114B2Oct 2, 2018
Asynchronous access and synchronous transmission for coexistence of wireless standards
NEC LAB AMERICA INC2 citations71
US9813944B2Nov 7, 2017
System and method for dynamic provisioning of Wi-Fi capacity in large venues using C-RAN architecture
NEC LAB AMERICA INC4 citations71
US9736785B2Aug 15, 2017
Degrees of freedom in multicell wireless systems with full-duplex base stations using interference alignment and methods for enabling full-duplex with half duplex clients
NEC LAB AMERICA INC1 citations63
US9723567B2Aug 1, 2017
Interference cancellation
NEC LAB AMERICA INC1 citations63
US9450654B2Sep 20, 2016
Multi-user multiple input multiple output (MIMO) communication with distributed antenna systems in wireless networks
NEC LAB AMERICA INC2 citations63
US8891604B2Nov 18, 2014
Coordinated multi-point transmission
NEC LAB AMERICA INC3 citations63
US10410025B2Sep 10, 2019
Product checkout and interest detection in retail environment using radio-frequency identification
NEC LAB AMERICA INC1 citations62
US10331493B2Jun 25, 2019
Systems and methods for distributed assignment of task identifiers
NEC LAB AMERICA INC1 citations62
US10296394B2May 21, 2019
Consistent hashing
NEC LAB AMERICA INC1 citations62
US11595934B2Feb 28, 2023
Infrastructure-free tracking and response
NEC LAB AMERICA INC0 citations59
US11169518B2Nov 9, 2021
Tracking indoor objects with inertial sensor measurements
NEC LAB AMERICA INC1 citations59
US11089432B2Aug 10, 2021
Tracking indoor objects from an unmanned aerial vehicle
NEC LAB AMERICA INC1 citations59
US12207226B2Jan 21, 2025
Device tracking with radio ranging and sensor functions
NEC LAB AMERICA INC0 citations57
US12000945B2Jun 4, 2024
Visual and RF sensor fusion for multi-agent tracking
NEC LAB AMERICA INC0 citations55
US11388564B2Jul 12, 2022
Infrastructure-free RF tracking in dynamic indoor environments
NEC LAB AMERICA INC0 citations54
US12487607B2Dec 2, 2025
Near real-time reconstruction using drones
NEC LAB AMERICA INC0 citations52
US11971473B2Apr 30, 2024
Locating objects in indoor spaces using radio frequency backscatter tags
NEC LAB AMERICA INC0 citations52
US10574535B2Feb 25, 2020
Interference topology inference to enhance performance of LTE unlicensed networks
NEC LAB AMERICA INC0 citations52
US10021172B2Jul 10, 2018
Software driven long-term-evolution core network for mobile access
NEC LAB AMERICA INC0 citations52
SUNDARESAN KARTHIKEYAN
6 patentsUS8311005B2Nov 13, 2012
Methods and systems for allocation of macro cell resources in a distributed femto cell network and a distributed relay station network
SUNDARESAN KARTHIKEYAN18 citations92
US8310975B2Nov 13, 2012
Optimal beam scheduling for multicasting in wireless networks
SUNDARESAN KARTHIKEYAN7 citations83
US8098609B2Jan 17, 2012
Integrated scheduling of unicast and multicast traffic in relay-enabled wireless networks
SUNDARESAN KARTHIKEYAN6 citations73
US8537693B2Sep 17, 2013
Multicast scheduling systems and methods for leveraging cooperation gains in relay networks
SUNDARESAN KARTHIKEYAN2 citations63
US8134946B2Mar 13, 2012
System and method for scheduling in relay-assisted wireless networks
SUNDARESAN KARTHIKEYAN5 citations63
US8767580B2Jul 1, 2014
Femtocell resource management for interference mitigation
SUNDARESAN KARTHIKEYAN2 citations60
KHOJASTEPOUR MOHAMMAD A
4 patentsUS8879433B2Nov 4, 2014
Method for a canceling self interference signal using active noise cancellation in the air for full duplex simultaneous (in time) and overlapping (in space) wireless transmission and reception on the same frequency band
KHOJASTEPOUR MOHAMMAD A43 citations94
US8837332B2Sep 16, 2014
Method for a canceling self interference signal using passive noise cancellation for full-duplex simultaneous (in time) and overlapping (in space) wireless transmission and reception on the same frequency band
KHOJASTEPOUR MOHAMMAD A42 citations94
US9137788B2Sep 15, 2015
Multiple-input multiple-output wireless communications with full duplex radios
KHOJASTEPOUR MOHAMMAD A7 citations73
US8537928B2Sep 17, 2013
Channel estimation methods and systems based on power measurement at receivers
KHOJASTEPOUR MOHAMMAD A2 citations63
ZHANG HONGHAI
1 patentLAKSHMANAN SRIRAM
1 patentNEC CORP
1 patentShowing the top 50 of 77 patents by PatentIndex Score.