Carrier frequency bias correcting method with OFDMA up-link system intersection
Title：
Carrier frequency bias correcting method with OFDMA up-link system intersection
Application Number：
 200610011554
Application Date：
 2006/03/24
Announcement Date：
 2006/08/16
Pub. Date：
Publication Number：
 1819575
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H04L 27/26, H04L 5/02
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Fan Da, Cao Zhigang, Fan Pingyi
Key Words：
 Carrier frequency bias correcting, OFDMA up-link system, intersection
Abstract：
 The method includes: after OFDM signal is received by receiving end, through removing the cyclic prefix, r(n) signal is obtained and through a data reconstitution for remained N point sampling signals by series/parallel converter, the matrix expression Y of OFDM symbolic blocks is obtained and is inputted into a frequency deviation correcting circuit with frequency deviation estimation circuit, the frequency deviation estimated values of all subscribers {¦¤f(m) }Mm=0 is obtained making frequency deviation compensation for each subscriber, and after compensation, getting signal Sfc after series/parallel conversion, according to FFT transform taking the number of sub-carriers in each sub-channel as the number of points, through zero forcing equalization receiver, the estimated value of each subscriber primitive symbol X(m) is obtained.
Claim：
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PCT：
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