Title:
自己回帰チャネルモデル化を用いて搬送周波数オフセットとフェージング・レートとを推定する方法および装置
Document Type and Number:
Japanese Patent JP4142715
Kind Code:
B2
Abstract:
A method for use by a receiver of a wireless communication system in providing information of use in adapting to changing characteristics of a communication channel (22) over which the receiver (23) receives a signal at an offset from a carrier frequency due to changes in the characteristics of the communication channel characteristics, the changing communication channel characteristics also causing from time to time changes in other characteristics of the communication channel (22), the method characterized by: a step (23b-1a 23b-1b) of providing expectation maximization estimates of autoregressive parameters representing the changing communication channel (22) using received signal samples extracted from the received signal and corresponding to transmitted pilot symbol; and a step (23b-1a 23b-1c) of providing an estimate of the channel impulse response and an estimate of a frequency offset of at least one multipath signal based on the estimated values of the autoregressive parameters.
Inventors:
Nisilla, Mauri
Application Number:
JP2006516499A
Publication Date:
September 03, 2008
Filing Date:
May 13, 2004
Export Citation:
Assignee:
NOKIA CORPORATION
International Classes:
H04B7/015; H04B1/16; H04B15/00; H04L1/00; H04L25/02; H04L
Domestic Patent References:
| JP2002534899A |
Foreign References:
| US6320919 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shimichi Akihisa
Kurachi Yasuyuki
Masaya Nishiyama
Jun Tsuruta
Tetsuro Shimada
Shimichi Akihisa
Kurachi Yasuyuki
Masaya Nishiyama
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