JP4657604B2 - Cdma無線システム - Google Patents
Cdma無線システム Download PDFInfo
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- JP4657604B2 JP4657604B2 JP2003527920A JP2003527920A JP4657604B2 JP 4657604 B2 JP4657604 B2 JP 4657604B2 JP 2003527920 A JP2003527920 A JP 2003527920A JP 2003527920 A JP2003527920 A JP 2003527920A JP 4657604 B2 JP4657604 B2 JP 4657604B2
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- Prior art keywords
- data stream
- receiver
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- Expired - Lifetime
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7107—Subtractive interference cancellation
- H04B1/71072—Successive interference cancellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0669—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different channel coding between antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
-
- 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
- H04L1/02—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
-
- 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
- H04L1/02—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
- H04L1/0631—Receiver arrangements
-
- 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
- H04L1/02—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
- H04L1/0637—Properties of the code
- H04L1/0643—Properties of the code block codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Transmission System (AREA)
- Mobile Radio Communication Systems (AREA)
Description
に掛けることによって得られる。
残されるのは、他の信号及びノイズから受信される信号の合計に対する寄与である。ステップ702で、その後、それは、前記仮決定ブロックで用いられる前記同様の最小二乗誤差を使って他の信号の値を推定し、前記推定の信頼度も算出する。ステップ703で、その後、それは、他の符号のために受信した信頼度と前記算出した信頼度を合計し、ステップ704で、その2つの合計を比較する。より合計が小さい時、受信した信号値に関する最終決定を行う。
を用いて乗算器1014及び1016で乗算され、時空デコーダ1022、1024によってデコードされ、信号の組(c1,c2)及び(s1,s2)の推定値を生成する。この処理は、以下の式によって表される。
Claims (4)
- デジタル情報符号のデータストリームのための通信方法であって、
前記データストリームを複数の独立したデータストリームに分割する段階と、
各々が複数のアンテナを有する複数の送信機によって、前記複数のアンテナの各々から独立したデータストリームの各々を送信する段階と、
受信機が、前記複数の送信機によって送信された前記独立したデータストリームを、1つの送信機における複数のアンテナと数が等しい複数のアンテナの各々において受信する段階と、
受信された独立したデータストリームをデジタルデータストリームに組み立てる段階とを備え、
前記受信機の複数のアンテナの各々は、異なる信号配列を用いて変調され異なるチャネルコードを有する前記複数の送信機からの直接及び多重経路の反射された独立したデータストリーム信号を受信し、
複数の直接の及び多重通路の受信された信号によって生成された干渉を抑制する段階をさらに備えており、
前記抑制する段階は、
その各々が前記独立したデータストリームを含む直接の及び多重経路の信号の少なくとも1つを受信する複数のフィンガー干渉抑制ユニットを提供する段階と、
各フィンガー抑制ユニットの出力において独立したデータストリームの各々の信頼度を決定する段階と、
各フィンガー抑制ユニットから最も信頼度の高い独立したデータストリームを抽出する段階と、
抽出された最も信頼度の高い独立したデータストリームをデータストリームに結合する段階とを備えている通信方法。 - デコードされたデータストリームを生成するために、前記受信機のチャネルデコーダから前記結合する段階によって生成されたデータストリームに情報を与える段階と、
前記受信機の信号配列のフォーマットに基づいてデコードされたデータストリームの信頼度を仮決定する段階と、
仮決定のデータストリームの干渉の反復的消去を実行し、前記受信機に対応するデータストリームをソフト決定する段階と、
前記受信機のチャネルデコーダによるソフト決定のデータストリームをデコードする段階とをさらに備えている請求項1に記載の通信方法。 - デジタル情報符号のデータストリームのための通信方法であって、
前記データストリームを複数の独立したデータストリームに分割する段階と、
各々が複数のアンテナを有する複数の送信機によって、前記複数のアンテナの各々から独立したデータストリームの各々を送信する段階と、
受信機が、前記複数の送信機によって送信された前記独立したデータストリームを、1つの送信機における複数のアンテナと数が等しい複数のアンテナの各々で受信する段階と、
受信された独立したデータストリームをデジタルデータストリームに組み立てる段階とを備え、
前記受信機の複数のアンテナの各々は、異なる信号配列を用いて変調され異なるチャネルコードを有する前記複数の送信機からの直接及び多重経路の反射された独立したデータストリーム信号を受信し、
複数の直接の及び多重通路の受信された信号によって生成された干渉を抑制する段階をさらに備えており、
前記抑制する段階は、
前記独立したデータストリームの全てを含む直接の及び多重経路の信号の全てを受信する干渉抑制ブロックを提供する段階と、
前記抑制ブロックによって出力される独立したデータストリームの各々の信頼度を決定する段階と、
最も信頼度の高い独立したデータストリームを抽出する段階と、
抽出された最も信頼度の高い独立したデータストリームを前記データストリームに結合する段階とを備えている通信方法。 - デコードされたデータストリームを生成するために、前記結合する段階によって生成されたデータストリームに対して前記受信機のチャネルデコーダからの情報を与える段階と、
前記受信機の信号配列のフォーマットに基づいてデコードされたデータストリームの信頼度の仮決定を作成する段階と、
仮決定のデータストリームの干渉の反復的消去を実行し、前記受信機に対応するデータストリームをソフト決定する段階と、
前記受信機のチャネルデコーダによるソフト決定のデータストリームをデコードする段階とをさらに備えている請求項3に記載の通信方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US32286901P | 2001-09-12 | 2001-09-12 | |
PCT/US2002/029369 WO2003023996A1 (en) | 2001-09-12 | 2002-09-12 | Cdma wireless systems |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005503065A JP2005503065A (ja) | 2005-01-27 |
JP4657604B2 true JP4657604B2 (ja) | 2011-03-23 |
Family
ID=23256784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003527920A Expired - Lifetime JP4657604B2 (ja) | 2001-09-12 | 2002-09-12 | Cdma無線システム |
Country Status (5)
Country | Link |
---|---|
US (3) | US7466743B2 (ja) |
EP (4) | EP2521285B1 (ja) |
JP (1) | JP4657604B2 (ja) |
CN (1) | CN100413224C (ja) |
WO (1) | WO2003023996A1 (ja) |
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-
2002
- 2002-09-12 EP EP12179107.3A patent/EP2521285B1/en not_active Expired - Lifetime
- 2002-09-12 CN CNB02817884XA patent/CN100413224C/zh not_active Expired - Lifetime
- 2002-09-12 EP EP12179106.5A patent/EP2521284B1/en not_active Expired - Lifetime
- 2002-09-12 EP EP16152715.5A patent/EP3070856B1/en not_active Expired - Lifetime
- 2002-09-12 JP JP2003527920A patent/JP4657604B2/ja not_active Expired - Lifetime
- 2002-09-12 US US10/243,173 patent/US7466743B2/en active Active
- 2002-09-12 WO PCT/US2002/029369 patent/WO2003023996A1/en active Application Filing
- 2002-09-12 EP EP02778266.3A patent/EP1444794B1/en not_active Expired - Lifetime
-
2007
- 2007-08-09 US US11/836,521 patent/US7623564B2/en not_active Expired - Lifetime
-
2009
- 2009-10-26 US US12/605,837 patent/US8724749B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP2521284B1 (en) | 2016-04-27 |
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