Performance Enhancement of TFI-OFDM with Path Selection based Channel Identification

URI http://harp.lib.hiroshima-u.ac.jp/hiroshima-cu/metadata/4058
File
Title
Performance Enhancement of TFI-OFDM with Path Selection based Channel Identification
Author
氏名 YOSHIMURA Takeshi
ヨミ ヨシムラ タケシ
別名 吉村 武士
氏名 AHN Chang-Jun
ヨミ アン チャンジュン
別名 安 昌俊
氏名 KAMIO Takeshi
ヨミ カミオ タケシ
別名 神尾 武司
氏名 FUJISAKA Hisato
ヨミ フジサカ ヒサト
別名 藤坂 尚登
氏名 HAEIWA Kazuhisa
ヨミ ハエイワ カズヒサ
別名 生岩 量久
Abstract

Recently time-frequency interferometry (TFI)-OFDM has been proposed as a channel identification scheme. TFI-OFDM system can multiplex the same impulse response in twice on the time domain without overlapping to each other. In this case, the required pilot signal is only one. Moreover, by averaging of these impulse responses, the accurate channel impulse responses are obtained. However, if the total channel paths are reduced, the performance might be degraded. This is because the channel identification of TFI-OFDM is operated with averaging the selected spectrum signals from the time windows. For the case with reduced channel paths, the selected time spectrum signals include the noise terms. By applying the FFT operation, these noise terms are spread in the frequency domain. In this case, the channel identification is poorly operated due to the noise. To reduce this problem, in the paper, we propose the channel identification method with path selection for performance enhanceme!
nt of TFI-OFDM.

Description

The 23rd International Technical Conference on Circuits/Systems, Computers and Communications(ITC-CSCC 2008) 2008年7月6~9日(山口県下関市)

Description Peer Reviewed
Journal Title
Proceedings of the International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC)
Spage
1313
Epage
1316
Published Date
2008-07
Publisher
電子情報通信学会(IEICE)
Language
eng
NIIType
Conference Paper
Text Version
出版社版
Relation URL
Old URI
Set
hiroshima-cu