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ID 34735
本文ファイル
著者
Emmanuel, Manasseh
キーワード
OFDM
ML estimation
MIMO
CFO
CRB
NDC
電気工学
抄録(英)
In this paper, challenges regarding the provision of channel state information (CSI) and carrier frequency synchronization for orthogonal frequency division multiplexing (OFDM) systems with null subcarriers are addressed. We propose novel maximum likelihood (ML) based schemes that estimate the aggregate effects of the CFO and channel by using two successive OFDM preambles. In the presented scheme, CFO is estimated by considering the phase rotation between two consecutive received OFDM preambles. Both single input single output (SISO) as well as multiple input multiple output (MIMO) OFDM systems are considered. The mean squared errors (MSE) of the channel and CFO are used to evaluate the performance of our proposed scheme. By using two successive OFDM preambles, the estimation of channel and the estimation of CFO are decoupled, which leads to a simple estimation method. Simulation results show that the BER performance of the proposed estimators is comparable to that of known channel state information and the CFO MSE performance achieves the Cramer-Rao bound (CRB) of the fully loaded OFDM system.
掲載誌名
Ieice Transactions on Fundamentals of Electronics Communications and Computer Sciences
E94-A巻
11号
開始ページ
2271
終了ページ
2278
出版年月日
2011
出版者
Ieice-Inst Electronics Information Communications Engineers
ISSN
0916-8508
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
(c) 2011 The Institute of Electronics, Information and Communication Engineers
関連情報URL
部局名
工学研究科