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:
Jul. 23, 2024
Filed:
Feb. 19, 2021
Qualcomm Incorporated, San Diego, CA (US);
Jing Jiang, San Diego, CA (US);
Joseph Binamira Soriaga, San Diego, CA (US);
Krishna Kiran Mukkavilli, San Diego, CA (US);
Tingfang Ji, San Diego, CA (US);
Huilin Xu, San Diego, CA (US);
Naga Bhushan, San Diego, CA (US);
Raghuraman Krishnamoorthi, Cupertino, CA (US);
Peter Pui Lok Ang, San Diego, CA (US);
John Edward Smee, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Systems and techniques are disclosed to reduce pilot overhead by providing common reference signals coded with cover codes that are orthogonal in time and frequency domains. Common reference signals that are coded by cover codes orthogonal in both domains can be de-spread in both the time and frequency domains for improved resolution and larger pull-in windows for both. Also disclosed is semi-uniform pilot spacing in both the frequency and time domains. In a time domain, a first pilot symbol pair is spaced by a first time interval from each other and a second pilot symbol pair is spaced by a second time interval from the first pair, the second interval being greater than the first. In a frequency domain, a first set of pilot symbols is densely placed in a selected frequency band and a second set of pilot symbols is sparsely placed surrounding and including the selected frequency band.