ETRI-Knowledge Sharing Plaform

KOREAN
특허 검색
Status Country
Year ~ Keyword

Detail

Registered UPLINK CHANEL ESTIMATION SYSTEM FOR ORTHOGONAL FRQUENCY DIVISION MULTIPLE ACCESS SYSTEM AND METHOD THEREOF

직교 주파수 분할 다중 접속 시스템의 상향 링크 채널 추정 시스템 및 그 방법
이미지 확대
Inventors
Young Ha Lee, Chang Wahn Yu, 박윤옥, Hwang Seung Ku
Application No.
10970208 (2004.10.20)
Publication No.
20050141626 (2005.06.30)
Registration No.
7428267 (2008.09.23)
Country
UNITED STATES
Abstract
In the uplink of an OFDMA system, a preamble is used to estimate a channel and then the pilot tones of a data symbol are used for channel estimation to update the channel estimate. The channel estimate is used for channel compensation, and the phase of the channel is corrected using the channel estimate obtained from the pilot tones. In this way, the channel estimation performance and hence the compensation ability can be enhanced.
KSP Keywords
Channel estimation(CE), Compensation ability, channel compensation, estimation performance, multiple access, pilot tones(PTs)