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:
Aug. 24, 2010
Filed:
Nov. 09, 2005
Young-ha Lee, Daejeon, KR;
Youn-ok Park, Daejeon, KR;
Young-Ha Lee, Daejeon, KR;
Youn-Ok Park, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
KT Corporation, Seongnam, KR;
SK Telecom Co., Ltd., Seoul, KR;
KTFREETEL Co., Ltd, Seoul, KR;
Hanaro Technologies, Inc., Seoul, KR;
Abstract
A base station demodulator according to the exemplary embodiment of the present invention includes a vector index demodulator, and a channel value detector. The vector index demodulator demodulates CQI or ARQ ACK/NACK channels by multiplying QPSK modulation signals transmitted as m subcarriers in a tile by m conjugate complexes corresponding to the m subcarriers, and determines the greatest value of the demodulation results as a vector index. The channel value detector inputs n vector indexes demodulated by the vector index demodulator to a first shift register, inputs n subsequent vector indexes to a second shift register, and detects a channel value for the CQI or the ARQ ACK/NACK by repeating the above vector index input to the first and second shift registers m-times.