JP2012005134A - グループ単位のデマッピングを用いる繰り返しmimo受信機 - Google Patents
グループ単位のデマッピングを用いる繰り返しmimo受信機 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03171—Arrangements involving maximum a posteriori probability [MAP] detection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/0048—Decoding adapted to other signal detection operation in conjunction with detection of multiuser or interfering signals, e.g. iteration between CDMA or MIMO detector and FEC decoder
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0625—Transmitter arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
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- H04L1/0631—Receiver arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
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Abstract
【解決手段】STBCM MIMO受信機は、STBICM MIMO送信機により送信された複数の複素記号をデマップする複数のデマッパを含む。各デマッパは、それに関連付けられる1つまたは複数の複素記号を有するよう構成され、その関連複素記号のデマッピングを担う。
【選択図】図3
Description
本発明は、米陸軍研究所により与えられた契約番号DAAD19−01−02−0011の下での政府支援により発明された。政府は本発明に対して一定の権利を有する。
本出願は、Joseph Liberti、John Koshy、およびTimothy Hoerningによる2005年3月14日出願の“Multi−Input Multi−Output (MIMO) System Using Iterative Detection with Soft Cancellation”というタイトルの米国仮特許出願番号60/661,551に基づき、その優先度を主張する。優先度の主張はこれにより行われ、その開示は参照により援用される。
y=Hs+n (1)
ここでnは加法性白色雑音を表す。加法性白色雑音の要素は、ゼロ平均と実次元毎の分散
標準適応フィルタ分析から、J(w)の勾配をゼロに設定することでwkを決定することができ、それによりwkが次式で与えられる。
次に、事前部
Claims (5)
- 時空間ビットインタリーブ符号化変調(STBICM)送信機により送信された複数の複素記号を含む受信信号からビットデータ列を再生する方法であって、前記方法は、
各複素記号を複数のグループのそれぞれの1つに割当てるステップであって、前記グループの少なくとも1つは複数の複素記号を含むことを特徴とするステップと、
各グループに対して、前記受信信号から前記グループのメンバでない1つまたは複数の複素記号の寄与を除去して、雑音除去信号を生成するステップと、
各グループに対して、前記雑音除去信号を用いて前記グループのメンバである1つまたは複数の複素記号を結合的にデマップし、符号化されたビット列の一部を表す複数の軟情報値を形成するステップと、
各グループからの少なくとも軟情報値を復号化して、前記ビットデータ列を表す軟情報の第1の列を生成するステップと
を含むことを特徴とする方法。 - 前記軟情報の第1の列を使用して前記ビットデータ列を決定するステップをさらに含む請求項1に記載の方法。
- 前記復号化するステップが、前記符号化ビット列を表す軟情報の第2の列も生成することを特徴とする請求項1に記載の方法。
- 前記軟情報の前記第2の列を使用して前記複素記号を表す軟記号を形成するステップをさらに備え、前記除去するステップ、使用するステップ、および復号化するステップが繰り返されて、各グループに対して、後続の除去するステップが前記グループのメンバでない1つまたは複数の複素記号に対応する前記軟記号を使用して、前記受信信号に対するこれらの1つまたは複数の複素記号の寄与を決定することを特徴とする請求項3に記載の方法。
- 前記軟情報値の第2の列は、前記符号化ビット列に関する新旧の情報を含むことを特徴とする請求項4に記載の方法。
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Application Number | Priority Date | Filing Date | Title |
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US66155105P | 2005-03-14 | 2005-03-14 | |
US60/661,551 | 2005-03-14 | ||
US71646805P | 2005-09-13 | 2005-09-13 | |
US60/716,468 | 2005-09-13 |
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JP2008501933A Division JP4841615B2 (ja) | 2005-03-14 | 2006-03-14 | グループ単位のデマッピングを用いる繰り返しmimo受信機 |
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JP2012005134A true JP2012005134A (ja) | 2012-01-05 |
JP5529810B2 JP5529810B2 (ja) | 2014-06-25 |
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JP2008501933A Active JP4841615B2 (ja) | 2005-03-14 | 2006-03-14 | グループ単位のデマッピングを用いる繰り返しmimo受信機 |
JP2011159228A Active JP5529810B2 (ja) | 2005-03-14 | 2011-07-20 | グループ単位のデマッピングを用いる繰り返しmimo受信機 |
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US (1) | US7593489B2 (ja) |
EP (1) | EP1861918B1 (ja) |
JP (2) | JP4841615B2 (ja) |
CA (1) | CA2601151A1 (ja) |
WO (1) | WO2006099267A2 (ja) |
Cited By (1)
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WO2021084890A1 (ja) * | 2019-10-28 | 2021-05-06 | 株式会社日立国際電気 | 無線通信システム及び無線通信方法 |
JPWO2021084890A1 (ja) * | 2019-10-28 | 2021-05-06 |
Also Published As
Publication number | Publication date |
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EP1861918B1 (en) | 2013-08-21 |
JP2008533912A (ja) | 2008-08-21 |
CA2601151A1 (en) | 2006-09-21 |
WO2006099267A2 (en) | 2006-09-21 |
JP5529810B2 (ja) | 2014-06-25 |
WO2006099267A3 (en) | 2007-12-27 |
EP1861918A2 (en) | 2007-12-05 |
JP4841615B2 (ja) | 2011-12-21 |
EP1861918A4 (en) | 2011-12-14 |
US20070041475A1 (en) | 2007-02-22 |
US7593489B2 (en) | 2009-09-22 |
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