Patents by Inventor Devi Chadha

Devi Chadha 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: 9967028
    Abstract: Diversity combining schemes have been extensively used in wireless and free space optical communication systems. The present invention of a system and method for free space optical communications where multiple gain combiner (MGC) provides a better performance as compared to selection combining (SC) and equal gain combining (EGC) and can also be used for wireless applications. It also gives a cost effective solution with a minimal degradation in quality when maximal ratio combining (MRC) is compared in terms of hardware complexity and implementation cost. There is no need for present channel state information. Also, Adaptive weight adjustment is not required in present invention. Therefore, the MGC of system and method disclosed in the present invention is a simple, cost effective and high performance diversity combiner.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: May 8, 2018
    Assignee: Indian Institute of Technology Delhi
    Inventors: Vinod Chandra, Devi Chadha, Vineeta Dubey
  • Publication number: 20160119059
    Abstract: Diversity combining schemes have been extensively used in wireless and free space optical communication systems. The present invention of a system and method for free space optical communications where multiple gain combiner (MGC) provides a better performance as compared to selection combining (SC) and equal gain combining (EGC) and can also be used for wireless applications. It also gives a cost effective solution with a minimal degradation in quality when maximal ratio combining (MRC) is compared in terms of hardware complexity and implementation cost. There is no need for present channel state information. Also, Adaptive weight adjustment is not required in present invention. Therefore, the MGC of system and method disclosed in the present invention is a simple, cost effective and high performance diversity combiner.
    Type: Application
    Filed: October 20, 2015
    Publication date: April 28, 2016
    Inventors: Vinod Chandra, Devi Chadha, Vineeta Dubey
  • Patent number: 9031407
    Abstract: The present disclosure discloses data vortex architecture with bidirectional links in which the packets are routed both in forward as well as in reverse directions through a single node. The disclosed arrangement avoids any packet congestion in the network and improves the BER characteristics.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: May 12, 2015
    Assignee: Indian Institute of Technology, Delhi
    Inventors: Vinod Chandra, Devi Chadha, R. G. Sangeetha