Title:
マルチキャリア変調を利用したマルチアンテナ通信システムのための送信スキーム
Document Type and Number:
Japanese Patent JP4833830
Kind Code:
B2
Abstract:
Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.
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Inventors:
Krishnan, Langanasan
Subramaniam, Anand
Cadous, Tamar
Subramaniam, Anand
Cadous, Tamar
Application Number:
JP2006503806A
Publication Date:
December 07, 2011
Filing Date:
February 24, 2004
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04J99/00; H04B7/005; H04B7/06; H04J11/00; H04L1/02; H04L27/04; H04L27/26; H04L
Domestic Patent References:
| JP2003101499A | 2003-04-04 |
Foreign References:
| WO2001076110A2 | 2001-10-11 | |||
| WO2001071928A2 | 2001-09-27 | |||
| WO2002101962A2 | 2002-12-19 |
Attorney, Agent or Firm:
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Ryo Hashimoto
Tetsuya Kazama
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Ryo Hashimoto
Tetsuya Kazama