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:
Nov. 12, 2013
Filed:
Feb. 29, 2012
Seokyong OH, San Diego, CA (US);
Thomas Sun, San Diego, CA (US);
Raghuraman Krishnamoorthi, San Diego, CA (US);
Seokyong Oh, San Diego, CA (US);
Thomas Sun, San Diego, CA (US);
Raghuraman Krishnamoorthi, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
The various embodiments provide circuitry and methods for packing Log Likelihood Ratio ('LLR') values into a buffer memory in a compressed format which reduces the amount of buffer memory required. Various embodiments use a type of quantization which reduces the bit width of the LLR values that are stored, with the particular level of quantization depending upon the code rate of the data. The degree, pattern, and periodicity of bit width compression employed may depend upon the code rate of the received transmission. Bit width patterns use for LLR value quantization may be generated by a shift register circuit which provides an efficient mechanism for controlling an LLR packer circuit based upon the code rate of the received signal.