Title:
A METHOD AND DEVICE FOR DFT-SPREAD OFDM
Document Type and Number:
WIPO Patent Application WO/2007/059706
Kind Code:
A1
Abstract:
A method and device for DFT-Spread OFDM include: The main sub-carrier group of
a cell transmit user data to the user which are in the boundary of the cell, and the
main sub-carrier group and/or the minor sub-carrier group of cell transmit user
data to the user which are not in the boundary of cell; wherein the main sub-carrier
group of the cell is allocated from the multiple sub-carrier group of DFT-Spread
OFDM access system, and the main sub-carrier groups of the respective adjacent
cells are different each other, the minor sub-carrier groups of a cell are the
predetermined sub-carrier groups other than the main sub-carrier group of the
cell. The frequency band of the different sun-carrier group are not overlap each
other, or the frequency band of the different sun-carrier group are partially
overlap. By the main sub-carrier group of cell transmit user data to the user which
are in the boundary of cell, it effectively solves the problem about the interfere
of the adjacent cell boundary; by the main sub-carrier group and/or the minor
sub-carrier group of cell transmit user data to the user which are not in the boundary
of cell, allowing that the multiplexing factor of DFT-Spread OFDM access system
is 1; thereby lowering the interfere of cell boundary, improving the availability
of multiple cell frequency-spectrum.
Inventors:
YANG XUEZHI (CN)
Application Number:
PCT/CN2006/003141
Publication Date:
May 31, 2007
Filing Date:
November 22, 2006
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
YANG XUEZHI (CN)
YANG XUEZHI (CN)
International Classes:
H04L27/00
Domestic Patent References:
| WO2004088892A1 | 2004-10-14 |
Foreign References:
| CN1677908A | 2005-10-05 | |||
| CN1466293A | 2004-01-07 | |||
| CN1520074A | 2004-08-11 |
Attorney, Agent or Firm:
BEIJING CATALY IP ATTORNEY AT LAW (Liming Room 902, Sidaokou Road 11, Haidian District Beijing 1, CN)
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