CN1234661C - 通过结晶纯化至少一种单体的粗熔化物的方法 - Google Patents
通过结晶纯化至少一种单体的粗熔化物的方法 Download PDFInfo
- Publication number
- CN1234661C CN1234661C CN02809592.8A CN02809592A CN1234661C CN 1234661 C CN1234661 C CN 1234661C CN 02809592 A CN02809592 A CN 02809592A CN 1234661 C CN1234661 C CN 1234661C
- Authority
- CN
- China
- Prior art keywords
- crystallization
- melt
- suspension
- crystal
- remaining melt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002425 crystallisation Methods 0.000 title claims abstract description 61
- 230000008025 crystallization Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000000178 monomer Substances 0.000 title claims abstract description 23
- 239000013078 crystal Substances 0.000 claims abstract description 35
- 239000000725 suspension Substances 0.000 claims abstract description 35
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000007787 solid Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 4
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 8
- 238000001914 filtration Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000012065 filter cake Substances 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 206010009866 Cold sweat Diseases 0.000 description 1
- -1 Phenyl aldehyde Chemical class 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 208000001848 dysentery Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D207/24—Oxygen or sulfur atoms
- C07D207/26—2-Pyrrolidones
- C07D207/263—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
- C07D207/267—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pyrrole Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10122788A DE10122788A1 (de) | 2001-05-10 | 2001-05-10 | Verfahren der kristallisativen Reinigung einer Roh-Schmelze wenigstens eines Monomeren |
| DE10122788.4 | 2001-05-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1518530A CN1518530A (zh) | 2004-08-04 |
| CN1234661C true CN1234661C (zh) | 2006-01-04 |
Family
ID=7684328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02809592.8A Expired - Lifetime CN1234661C (zh) | 2001-05-10 | 2002-05-02 | 通过结晶纯化至少一种单体的粗熔化物的方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7319166B2 (enExample) |
| EP (1) | EP1387824B1 (enExample) |
| JP (2) | JP4520698B2 (enExample) |
| CN (1) | CN1234661C (enExample) |
| DE (2) | DE10122788A1 (enExample) |
| WO (1) | WO2002090310A1 (enExample) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8134976B2 (en) | 2002-10-25 | 2012-03-13 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
| US8145179B2 (en) | 2002-10-25 | 2012-03-27 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
| US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
| US8194770B2 (en) | 2002-08-27 | 2012-06-05 | Qualcomm Incorporated | Coded MIMO systems with selective channel inversion applied per eigenmode |
| US8203978B2 (en) | 2002-10-25 | 2012-06-19 | Qualcomm Incorporated | Multi-mode terminal in a wireless MIMO system |
| US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
| US8218609B2 (en) | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
| US8320301B2 (en) | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
| US8358714B2 (en) | 2005-06-16 | 2013-01-22 | Qualcomm Incorporated | Coding and modulation for multiple data streams in a communication system |
| US8570988B2 (en) | 2002-10-25 | 2013-10-29 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
| US8855226B2 (en) | 2005-05-12 | 2014-10-07 | Qualcomm Incorporated | Rate selection with margin sharing |
| US8873365B2 (en) | 2002-10-25 | 2014-10-28 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
| US9154274B2 (en) | 2002-10-25 | 2015-10-06 | Qualcomm Incorporated | OFDM communication system with multiple OFDM symbol sizes |
| US9312935B2 (en) | 2002-10-25 | 2016-04-12 | Qualcomm Incorporated | Pilots for MIMO communication systems |
| US9473269B2 (en) | 2003-12-01 | 2016-10-18 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10122788A1 (de) * | 2001-05-10 | 2002-06-06 | Basf Ag | Verfahren der kristallisativen Reinigung einer Roh-Schmelze wenigstens eines Monomeren |
| DE102004058071A1 (de) * | 2004-12-01 | 2006-06-08 | Basf Ag | Verfahren zur Reinigung von polaren Vinylverbindungen |
| US7705181B2 (en) | 2005-03-01 | 2010-04-27 | Basf Akiengesellschaft | Process for removing methacrylic acid from liquid phase comprising acrylic acid as a main constituent and target product, and methacrylic acid as a secondary component |
| US7601866B2 (en) | 2005-03-01 | 2009-10-13 | Basf Aktiengesellschaft | Process for removing methacrolein from liquid phase comprising acrylic acid as a main constituent and target product, and methacrolein as a secondary component |
| JP4976311B2 (ja) * | 2005-04-11 | 2012-07-18 | 株式会社日本触媒 | Ｎ−ビニル−２−ピロリドンの製造方法 |
| JP2007191449A (ja) | 2006-01-20 | 2007-08-02 | Nippon Shokubai Co Ltd | アクリル酸の製造方法 |
| DE602007005288D1 (de) | 2006-01-20 | 2010-04-29 | Nippon Catalytic Chem Ind | Verfahren zur Reinigung von Acrylsäure |
| JP5274005B2 (ja) * | 2007-12-25 | 2013-08-28 | 三菱レイヨン株式会社 | 易重合性化合物の晶析方法、および晶析装置 |
| JP5112898B2 (ja) * | 2008-02-07 | 2013-01-09 | 三菱レイヨン株式会社 | （メタ）アクリル酸の晶析方法およびその晶析システム |
| DE102008040799A1 (de) | 2008-07-28 | 2008-12-11 | Basf Se | Verfahren zur Auftrennung von in einem Produktgasgemisch einer partiellen heterogen katalysierten Gasphasenoxidation einer C3-Vorläuferverbindung der Acrylsäure als Hauptbestandteil enthaltener Acrylsäure und als Nebenprodukt enthaltenem Glyoxal |
| DE102008041573A1 (de) | 2008-08-26 | 2010-03-04 | Basf Se | Verfahren zur Auftrennung von in einem Produktgasgemisch einer partiellen heterogen katalysierten Gasphasenoxidation einer C3-Vorläuferverbindung der Acrylsäure als Hauptbestandteil enhaltener Acrylsäure und als Nebenprodukt enthaltenem Glyoxal |
| KR101861855B1 (ko) | 2008-07-28 | 2018-05-28 | 바스프 에스이 | 탄소원자 수가 ３개인 아크릴산의 전구체 화합물의 기체상 생성물 혼합물로부터 주성분으로서 함유된 아크릴산과 부산물로서 함유된 글리옥살을 분리시키는 방법 |
| WO2010134434A1 (ja) * | 2009-05-19 | 2010-11-25 | 株式会社日本触媒 | (メタ)アクリル酸の製造方法 |
| DE102011076931A1 (de) | 2011-06-03 | 2012-12-06 | Basf Se | Wässrige Lösung, enthaltend Acrylsäure und deren konjugierte Base |
| WO2014108285A1 (en) * | 2013-01-14 | 2014-07-17 | Sulzer Chemtech Ag | Multi-stage crystallisation process and apparatus to purify a compound |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2606364C3 (de) | 1976-02-18 | 1988-05-26 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Stofftrennung aus einem flüssigen Gemisch durch fraktionierte Kristallisation |
| US4656651A (en) | 1985-09-09 | 1987-04-07 | Itt Corporation | System for providing remote services |
| CH667816A5 (de) | 1985-10-09 | 1988-11-15 | Sulzer Ag | Kristallisationsvorrichtung und deren verwendung. |
| US5329021A (en) * | 1993-02-04 | 1994-07-12 | Isp Investments Inc. | Process for the production of pure vinyl pyrrolidone |
| TW305830B (enExample) * | 1993-03-26 | 1997-05-21 | Sulzer Chemtech Ag | |
| US5523480A (en) * | 1994-03-28 | 1996-06-04 | Rohm And Haas Company | Process for purifying unsaturated carboxylic acids using distillation and melt crystallization |
| DE19501326A1 (de) | 1995-01-18 | 1996-07-25 | Basf Ag | Verfahren der rektifikativen Abtrennung von (Meth)acrylsäure aus einem (Meth)acrylsäure als Hauptbestandteil und niedere Aldehyde als Nebenbestandteile enthaltenden Gemisch in einer aus Abtriebsteil und Verstärkerteil bestehenden Rektifiaktionskolonne |
| DE19627679A1 (de) * | 1996-07-10 | 1998-01-15 | Basf Ag | Verfahren zur Reinigung von Roh-Acrylsäure durch Kristallisation |
| DE19740252A1 (de) * | 1997-09-12 | 1999-03-18 | Basf Ag | Verfahren zur Herstellung von Acrylsäure und Methacrylsäure |
| DE19904820A1 (de) | 1999-02-05 | 2000-08-10 | Stockhausen Chem Fab Gmbh | Verfahren und Vorrichtung zur Reinigung von Stoffen mittels Kristallisation |
| JP2000290220A (ja) * | 1999-04-09 | 2000-10-17 | Mitsubishi Chemicals Corp | アクリル酸の精製方法 |
| DE19926082A1 (de) | 1999-06-08 | 2000-12-14 | Basf Ag | Verfahren zur Reinigung und Herstellung von Acrylsäure oder Methacrylsäure |
| DE19938841A1 (de) | 1999-08-17 | 2001-02-22 | Basf Ag | Inhibitorkomposition zur Stabilisierung von radikalisch polymerisierbaren Substanzen |
| DE10003497A1 (de) * | 2000-01-27 | 2001-04-12 | Basf Ag | Reinigungsverfahren für (Meth)acrylsäure |
| DE10003498A1 (de) | 2000-01-27 | 2001-08-02 | Basf Ag | Reinigungsverfahren für (Meth)acrylsäure |
| DE10039025A1 (de) | 2000-08-10 | 2002-02-21 | Basf Ag | Verfahren zur Reinigung einer Rohacrylsäureschmelze |
| DE10026407A1 (de) | 2000-05-29 | 2001-12-06 | Basf Ag | Verfahren der diskontinuierlichen kristallisativen Reinigung von Roh-Acrylsäure |
| DE10122788A1 (de) * | 2001-05-10 | 2002-06-06 | Basf Ag | Verfahren der kristallisativen Reinigung einer Roh-Schmelze wenigstens eines Monomeren |
-
2001
- 2001-05-10 DE DE10122788A patent/DE10122788A1/de not_active Withdrawn
-
2002
- 2002-05-02 CN CN02809592.8A patent/CN1234661C/zh not_active Expired - Lifetime
- 2002-05-02 EP EP02735324A patent/EP1387824B1/de not_active Expired - Lifetime
- 2002-05-02 WO PCT/EP2002/004783 patent/WO2002090310A1/de not_active Ceased
- 2002-05-02 US US10/476,187 patent/US7319166B2/en not_active Expired - Lifetime
- 2002-05-02 JP JP2002587393A patent/JP4520698B2/ja not_active Expired - Lifetime
- 2002-05-02 DE DE50210277T patent/DE50210277D1/de not_active Expired - Lifetime
-
2010
- 2010-03-15 JP JP2010056941A patent/JP2010132711A/ja not_active Withdrawn
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8194770B2 (en) | 2002-08-27 | 2012-06-05 | Qualcomm Incorporated | Coded MIMO systems with selective channel inversion applied per eigenmode |
| US8483188B2 (en) | 2002-10-25 | 2013-07-09 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
| US9154274B2 (en) | 2002-10-25 | 2015-10-06 | Qualcomm Incorporated | OFDM communication system with multiple OFDM symbol sizes |
| US8170513B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
| US8145179B2 (en) | 2002-10-25 | 2012-03-27 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
| US8203978B2 (en) | 2002-10-25 | 2012-06-19 | Qualcomm Incorporated | Multi-mode terminal in a wireless MIMO system |
| US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
| US8218609B2 (en) | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
| US8320301B2 (en) | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
| US8355313B2 (en) | 2002-10-25 | 2013-01-15 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
| US9312935B2 (en) | 2002-10-25 | 2016-04-12 | Qualcomm Incorporated | Pilots for MIMO communication systems |
| US8462643B2 (en) | 2002-10-25 | 2013-06-11 | Qualcomm Incorporated | MIMO WLAN system |
| US8134976B2 (en) | 2002-10-25 | 2012-03-13 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
| US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
| US8570988B2 (en) | 2002-10-25 | 2013-10-29 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
| US8934329B2 (en) | 2002-10-25 | 2015-01-13 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
| US9240871B2 (en) | 2002-10-25 | 2016-01-19 | Qualcomm Incorporated | MIMO WLAN system |
| US8873365B2 (en) | 2002-10-25 | 2014-10-28 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
| US8913529B2 (en) | 2002-10-25 | 2014-12-16 | Qualcomm Incorporated | MIMO WLAN system |
| US8750151B2 (en) | 2002-10-25 | 2014-06-10 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
| US9013974B2 (en) | 2002-10-25 | 2015-04-21 | Qualcomm Incorporated | MIMO WLAN system |
| US9031097B2 (en) | 2002-10-25 | 2015-05-12 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
| US9048892B2 (en) | 2002-10-25 | 2015-06-02 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
| US8711763B2 (en) | 2002-10-25 | 2014-04-29 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
| US9473269B2 (en) | 2003-12-01 | 2016-10-18 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
| US8855226B2 (en) | 2005-05-12 | 2014-10-07 | Qualcomm Incorporated | Rate selection with margin sharing |
| US8358714B2 (en) | 2005-06-16 | 2013-01-22 | Qualcomm Incorporated | Coding and modulation for multiple data streams in a communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| US20040133015A1 (en) | 2004-07-08 |
| EP1387824B1 (de) | 2007-06-06 |
| JP2004528371A (ja) | 2004-09-16 |
| JP2010132711A (ja) | 2010-06-17 |
| US7319166B2 (en) | 2008-01-15 |
| DE10122788A1 (de) | 2002-06-06 |
| DE50210277D1 (de) | 2007-07-19 |
| JP4520698B2 (ja) | 2010-08-11 |
| WO2002090310A1 (de) | 2002-11-14 |
| EP1387824A1 (de) | 2004-02-11 |
| CN1518530A (zh) | 2004-08-04 |
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