Title:
OPTICAL ACCESS SYSTEM, STATION-END TERMINATION APPARATUS AND SUBSCRIBER-END TERMINATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2010/150356
Kind Code:
A1
Abstract:
An optical access system comprises an OLT (1) and ONUs (2) (2-1 to 2-m). The OLT (1) includes a CP inserting unit (10) that inserts a CP into a downstream signal; a CP removing unit (11) that removes a CP from an upstream signal received from each ONU (2); an FFT unit (13) that subjects the upstream CP-removed signal to an equalization process using a frequency domain equalizing scheme and based on the inverse characteristic of the characteristic of a transmission path leading to each ONU (2); an EQ unit (14); and an inverse FFT unit (15). Each ONU (2) includes a CP inserting unit (10) that inserts a CP into an upstream signal; a CP removing unit (11) that removes the CP from the received downstream signal; an FFT unit (13) that subjects the downstream CP-removed signal to an equalization process using the frequency domain equalizing scheme and based on the inverse characteristic of the characteristic of a transmission path leading to the OLT (1) being held; an EQ unit (14); and an inverse FFT unit (15).
Inventors:
ISHII KENJI (JP)
NAKAGAWA JUNICHI (JP)
NAKAGAWA JUNICHI (JP)
Application Number:
PCT/JP2009/061413
Publication Date:
December 29, 2010
Filing Date:
June 23, 2009
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
ISHII KENJI (JP)
NAKAGAWA JUNICHI (JP)
ISHII KENJI (JP)
NAKAGAWA JUNICHI (JP)
International Classes:
H04B3/04
Foreign References:
| JP2008312072A | 2008-12-25 | |||
| JP2007096513A | 2007-04-12 | |||
| JP2008530864A | 2008-08-07 |
Other References:
KOICHI ISHIHARA ET AL.: "Single Carrier Shuhasu Ryoiki Toka Gijutsu ni yoru Hacho Bunsan Hosho", IEICE TECHNICAL REPORT HIKARI TSUSHIN SYSTEM (OCS), vol. 108, no. 259, 16 October 2008 (2008-10-16), pages 177 - 180
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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