講演抄録/キーワード |
講演名 |
2013-02-22 10:15
Blind Adaptive Channel Equalizer of Multi-Path Feedback Channel for OFDM-Based Wireless Repeater System ○Faramarz Asharif・Shiro Tamaki・Mohammad Reza Alsharif(Univ. of the Ryukyus)・Heung Gyoon Ryu(Chungbuk National Univ.) SAT2012-61 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
In this paper, we aim to blindly equalize the feedback multipath channel in relay system. Blind equalizers do not require any known training sequence for the startup period, but can rather perform at any time equalize directly on the data stream. Moreover, the pilot signal can be cut off due to utilization of Blind Equalizer so that the amount of transmitted data is reduced. Thus faster computational process is expected. In this paper, relay system’s transceiver frequency is employed in same frequency so that the amplified signal may interfere the relay system itself. Moreover if there is any multipath channel it will make the interference signal more sophisticated while amplified signal is fed back to the receiver side. In order to cancel out these interferences, we have to realize a replica of feedback multipath channel. Since there is no reference input signal about the interferences, we have to realize the replica of multi path channel blindly. In this research Constant Modulus Equalizer (CME) and Modified Constant Modulus Equalizer (MCME) in time domain process is introduced. In order to evaluate the each scheme, we have analyzed with the Normalized Mean Square Error (NMSE). Consequently Modified Constant Modulus Equalizer enhances the performance. |
キーワード |
(和) |
/ / / / / / / |
(英) |
Interferenec Cancellation System / Adaptive Filter / Wireless Relay System / Blind Equalizer / Constant Modulus Algorithm / / / |
文献情報 |
信学技報, vol. 112, no. 440, SAT2012-61, pp. 83-86, 2013年2月. |
資料番号 |
SAT2012-61 |
発行日 |
2013-02-14 (SAT) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
SAT2012-61 |