Title:
RADIO TRANSMITTER, RADIO RECEIVER, RADIO COMMUNICATION SYSTEM, AND INTEGRATED CIRCUIT
Document Type and Number:
Japanese Patent JP2012104988
Kind Code:
A
Abstract:
To improve complexity of a mobile station device and suppress the amount of overhead of a notification from the mobile station device, in a closed loop type MIMO codebook base.
The radio transmitter includes a plurality of transmission antennas, performs pre-coing on data signals addressed to a plurality of receivers, and transmits the signals in multiplexed manner in the space after the pre-coding. A codebook in which a plurality of linear filters related to each other are described is shared by the receivers. Based on a first linear filter that is extracted from the codebook based on the relationship at each receiver, and notified from the receiver, each of the data signals addressed to the receivers is applied with the pre-coding.
Inventors:
TOMEBA HIROMICHI
FUJI SHINPEI
ONODERA TAKESHI
NAKANO HIROSHI
RUIZ DELGADO ALVARO
FUJI SHINPEI
ONODERA TAKESHI
NAKANO HIROSHI
RUIZ DELGADO ALVARO
Application Number:
JP2010250636A
Publication Date:
May 31, 2012
Filing Date:
November 09, 2010
Export Citation:
Assignee:
SHARP KK
International Classes:
H04J99/00; H04W16/28
Other References:
JPN6011053041; Ｐａｎｔｅｃｈ: 'Ｃｏｍｐａｎｉｏｎ ｓｕｂｓｅｔ ｂａｓｅｄ ＰＭＩ ｆｅｅｄｂａｃｋ ｆｏｒ ｒａｎｋ １／２ ＭＩＭＯ ｔｒａｎｓｍｉｓｓｉｏｎ' ３ＧＰＰ ＴＳＧ ＲＡＮ Ｗｏｒｋｉｎｇ Ｇｒｏｕｐ １ Ｍｅｅｔｉｎｇ ＃６１ｂｉｓ , 20100702
JPN6011053042; Ｔｅｘａｓ Ｉｎｓｔｒｕｍｅｎｔｓ: 'Ｄｕａｌ-Ｓｔａｇｅ Ｃｏｄｅｂｏｏｋ Ｐｒｏｐｏｓａｌ ｆｏｒ Ｒｅｌ．１０ ＤＬ ＭＩＭＯ' ３ＧＰＰ ＴＳＧ ＲＡＮ ＷＧ１ ＃６２ , 20100827
JPN6011053043; Ｐａｎｔｅｃｈ: 'Ｏｎ ｔｈｅ ｔｗｏ ｓｔａｇｅ ８ Ｔｘ ｃｏｄｅｂｏｏｋ' ３ＧＰＰ ＴＳＧ-ＲＡＮ ＷＧ１ ＃６２ , 20100827
JPN6011053042; Ｔｅｘａｓ Ｉｎｓｔｒｕｍｅｎｔｓ: 'Ｄｕａｌ-Ｓｔａｇｅ Ｃｏｄｅｂｏｏｋ Ｐｒｏｐｏｓａｌ ｆｏｒ Ｒｅｌ．１０ ＤＬ ＭＩＭＯ' ３ＧＰＰ ＴＳＧ ＲＡＮ ＷＧ１ ＃６２ , 20100827
JPN6011053043; Ｐａｎｔｅｃｈ: 'Ｏｎ ｔｈｅ ｔｗｏ ｓｔａｇｅ ８ Ｔｘ ｃｏｄｅｂｏｏｋ' ３ＧＰＰ ＴＳＧ-ＲＡＮ ＷＧ１ ＃６２ , 20100827
Attorney, Agent or Firm:
Takeo Fukuchi
Yoichi Shirakawa
Yoichi Shirakawa