Title:
適応サブキャリア-クラスタ構成及び選択的ローディングを備えたOFDMA
Document Type and Number:
Japanese Patent JP4201595
Kind Code:
B2
Abstract:
A method and apparatus for subcarrier selection for systems is described. In one embodiment, the system employs orthogonal frequency division multiple access (OFDMA). In one embodiment, a method for subcarrier selection compresses each of multiple subscribes measuring channel and interference information for subcarriers based on pilot symbols received from a base station, at least one of subscribers selecting a set of candidate subcarriers, providing feedback information on the set of candidate subcarriers to the base station, and the one subscriber receiving an indication of subcarriers to the base station, and the one subscriber receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the one subscriber.
Inventors:
Liu Hui
Rikemin
Lisa Odon
Tsang Wentzong
Rikemin
Lisa Odon
Tsang Wentzong
Application Number:
JP2002550683A
Publication Date:
December 24, 2008
Filing Date:
December 13, 2001
Export Citation:
Assignee:
Adaptics Incorporated
International Classes:
H04J11/00; H04L1/00; H04L27/26; H04W72/08
Domestic Patent References:
| JP11508417A | ||||
| JP7322219A | ||||
| JP10303849A | ||||
| JP2002511702A | ||||
| JP11289578A |
Foreign References:
| US5914933 | ||||
| US5479447 | ||||
| US5708973 | ||||
| US6131016 | ||||
| US6144696 | ||||
| WO1998030047A1 |
Other References:
Yoshiyuki KINUGAWA, Kazuya SATO, Minoru OKADA, Shinsuke HARA, Norihiko MORINAGA,Frequency and Time Division Multiple Access with Demand-Assignment Using Multicarrier Modulation for Indoor Wireless Communications Systems,IEICE Transactions on Communications,日本,1994年 3月,E77-B, No.3,pp.396-402
RAINER GRUNHEID, HERMANN ROHLING,Adaptive Modulation and Multiple Access for the OFDM Transmision Technique,Wireless Personal Communications,2000年,Vol.13,pp.5-13
Cheong Yui Wong, Roger S.Cheng, Khaled Ben Letaief, Ross D.Murch,Multiuser OFDM with Adaptive Subcarrier, Bit, and Power Allocation,IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS,1999年10月,Vol.17, No.10,pp.1747-1758
RAINER GRUNHEID, HERMANN ROHLING,Adaptive Modulation and Multiple Access for the OFDM Transmision Technique,Wireless Personal Communications,2000年,Vol.13,pp.5-13
Cheong Yui Wong, Roger S.Cheng, Khaled Ben Letaief, Ross D.Murch,Multiuser OFDM with Adaptive Subcarrier, Bit, and Power Allocation,IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS,1999年10月,Vol.17, No.10,pp.1747-1758
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Sadao Kumakura
Nobuo Ogawa
Takaki Nishijima
Atsushi Hakoda
Fumiaki Otsuka
Sadao Kumakura
Nobuo Ogawa
Takaki Nishijima
Atsushi Hakoda