Patents by Inventor Prasanth Karunakaran

Prasanth Karunakaran has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9312978
    Abstract: Embodiments disclosed herein reduce interference at pilot symbols and also enable good interference measurements by using a combination pilot tones and null tones along with null tones. In this type of system, the receivers estimate the channel state information without any strong interference from the neighboring transmitters, and at the same time it can also measure either the individual interference channel states or the interference covariances from the silent periods. It uses these measurements thus obtained to calculate the post processing SINR, and then compute and report the wideband and subband CQIs to the transmitter. The groups of transmitters are reused in geographically separated region using a frequency reuse structure. In a preferred implementation, pilot signal is precoded using a multi-antenna precoder. The precoder may be same for pilot and data.
    Type: Grant
    Filed: April 12, 2015
    Date of Patent: April 12, 2016
    Assignee: Centre of Excellence in Wireless Technology
    Inventors: Kiran Kumar Kuchi, Jeniston Deviraj Klutto Milleth, Vinod Ramaswamy, Baskaran Dhivagar, Dileep Manisseri Kalathil, Krishnamurthi Giridhar, Bhaskar Ramamurthi, Padmanabhan Madampu Suryasarman, Geordie George, Prasanth Karunakaran, Yerrapareddy Sivakishore Reddy
  • Publication number: 20150215063
    Abstract: Embodiments disclosed herein reduce interference at pilot symbols and also enable good interference measurements by using a combination pilot tones and null tones along with null tones. In this type of system, the receivers estimate the channel state information without any strong interference from the neighboring transmitters, and at the same time it can also measure either the individual interference channel states or the interference covariances from the silent periods. It uses these measurements thus obtained to calculate the post processing SINR, and then compute and report the wideband and subband CQIs to the transmitter. The groups of transmitters are reused in geographically separated region using a frequency reuse structure. In a preferred implementation, pilot signal is precoded using a multi-antenna precoder. The precoder may be same for pilot and data.
    Type: Application
    Filed: April 12, 2015
    Publication date: July 30, 2015
    Applicant: Centre of Excellence in Wireless Technology
    Inventors: Kiran Kumar Kuchi, Jeniston Deviraj Klutto Milleth, Vinod Ramaswamy, Baskaran Dhivagar, Dileep Manisseri Kalathil, Krishnamurthi Giridhar, Bhaskar Ramamurthi, Padmanabhan Madampu Suryasarman, Geordie George, Prasanth Karunakaran, Yerrapareddy Sivakishore Reddy
  • Patent number: 9030992
    Abstract: Embodiments disclosed herein reduce interference at pilot symbols and also enable good interference measurements by using a combination pilot tones and null tones along with null tones. In this type of system, the receivers can estimate tile channel state information without any interference from the remaining transmitters and at the same time the receiver can measure either the individual interference channel states or the interference covariances from the silent periods. The groups of transmitters are reused in geographically separated region using a frequency reuse structure. In a preferred implementation, pilot signal is precoded using a multi-antenna precoder. The precoder may be same for pilot and data.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: May 12, 2015
    Assignee: Centre of Excellence in Wireless Technology
    Inventors: Kiran Kumar Kuchi, Jeniston Deviraj Klutto Milleth, Vinod Ramaswamy, Baskaran Dhivagar, Dileep Manisseri Kalathil, Krishnamurthi Giridhar, Bhaskar Ramamurthi, Padmanabhan Madampu Suryasarman, Geordie George, Prasanth Karunakaran, Yerrapareddy Sivakishore Reddy
  • Publication number: 20120014476
    Abstract: Embodiments disclosed herein reduce interference at pilot symbols and also enable good interference measurements by using a combination pilot tones and null tones along with null tones. In this type of system, the receivers can estimate tile channel state information without any interference from the remaining transmitters and at the same time the receiver can measure either the individual interference channel states or the interference covariances from the silent periods. The groups of transmitters are reused in geographically separated region using a frequency reuse structure. In a preferred implementation, pilot signal is precoded using a multi-antenna precoder. The precoder may be same for pilot and data.
    Type: Application
    Filed: March 3, 2010
    Publication date: January 19, 2012
    Applicant: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY
    Inventors: Kiran Kumar Kuchi, Jeniston Deviraj Klutto Milleth, Vinod Ramaswamy, Baskaran Dhivagar, Dileep Manisseri Kalathil, Krishnamurthi Giridhar, Bhaskar Ramamurthi, Padmanabhan Madampu Suryasarman, Geordie George, Prasanth Karunakaran, Yerrapareddy Sivakishore Reddy