The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2015
Filed:
Mar. 03, 2010
Kiran Kumar Kuchi, Chennai, IN;
Jeniston Deviraj Klutto Milleth, Chennai, IN;
Vinod Ramaswamy, Chennai, IN;
Baskaran Dhivagar, Chennai, IN;
Dileep Manisseri Kalathil, Chennai, IN;
Krishnamurthi Giridhar, Chennai, IN;
Bhaskar Ramamurthi, Chennai, IN;
Padmanabhan Madampu Suryasarman, Chennai, IN;
Geordie George, Chennai, IN;
Prasanth Karunakaran, Chennai, IN;
Yerrapareddy Sivakishore Reddy, Chennai, IN;
Kiran Kumar Kuchi, Chennai, IN;
Jeniston Deviraj Klutto Milleth, Chennai, IN;
Vinod Ramaswamy, Chennai, IN;
Baskaran Dhivagar, Chennai, IN;
Dileep Manisseri Kalathil, Chennai, IN;
Krishnamurthi Giridhar, Chennai, IN;
Bhaskar Ramamurthi, Chennai, IN;
Padmanabhan Madampu Suryasarman, Chennai, IN;
Geordie George, Chennai, IN;
Prasanth Karunakaran, Chennai, IN;
Yerrapareddy Sivakishore Reddy, Chennai, IN;
Centre of Excellence in Wireless Technology, Chennai, IN;
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.