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Indoor Infrared Wireless Systems Using OOK-CDMA with Decision-Feedback Equalizer on Diffuse Channels
Hiroe YAMAGUCHI Ryoko MATSUO Michihito MATSUO Tomoaki OHTSUKI Iwao SASASE
IEICE TRANSACTIONS on Communications
Publication Date: 2001/04/01
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technology
infrared, OOK, CDMA, DFE, channel estimation,
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We evaluate the performance of indoor infrared wireless systems using on-off keying code division multiple access (OOK-CDMA) with decision-feedback equalizer (DFE) on diffuse channels. To estimate the impulse response, we use the training sequence that alternates '1' and '0. ' We show that the OOK-CDMA with DFE and the training sequence can achieve better performance than the OOK-CDMA without DFE. We also show that the OOK-CDMA with DFE and the training sequence can achieve almost the same performance as the OOK-CDMA with DFE and the known impulse response.