Tag Archives: CDMA

CDMA coupling and demodulating method

Application Number  00128634 Application Date  1995.06.22 Publication Number  1308429 Publication Date  2001.08.15 Priority Information   1994/6/23 JP 141994/1994; 1994/12/27 JP 326261/199; 1995/1/12 JP 3559/1995   International Classification  H04B1/16;H04J13/00   Applicant(s) Name  NTT Mobile Communications Network Inc.   Address     Inventor(s) Name  Sawa Kitsumamo;Anto Hidehiro;Adachi Fumiyuki   Patent Agency Code  11038 Patent Agent  feng xun… Read More »

Initial sync and small area search device of CDMA system based on multipath energy window

Application Number  00128224 Application Date  2000.12.18 Publication Number  1318921 Publication Date  2001.10.24 Priority Information     International Classification  H04J13/02;H04Q7/20   Applicant(s) Name  Inst. of Telecommunication Transmission, Ministry of Information Technology & Te   Address     Inventor(s) Name  You Xiaohu;Guo Jinghong;Jiang Liangcheng   Patent Agency Code  00000 Patent Agent   AbstractIn the search device sync… Read More »

Frequency automatic corrector for CDMA multipath fading channel

Application Number  00128223 Application Date  2000.12.18 Publication Number  1333608 Publication Date  2002.01.30 Priority Information     International Classification  H04B1/16;H04J13/02   Applicant(s) Name  Inst. of Telecommunication Transmission, Ministry of Information Industry   Address     Inventor(s) Name  You Xiaohu;Zhang Yan;Wang Ling   Patent Agency Code  00000 Patent Agent   AbstractIn invented technical scheme, multipath energy window… Read More »

Direct bandspread/comprehensive CDMA bandspread coherent receiver

Application Number  00128221 Application Date  2000.12.18 Publication Number  1318920 Publication Date  2001.10.24 Priority Information     International Classification  H04J13/02;H04Q7/20   Applicant(s) Name  Inst of Telecommunication Transmission, Ministry of INformation Industry   Address     Inventor(s) Name  Jiang Liangcheng;You Xiaohu;Wang Junchao   Patent Agency Code  00000 Patent Agent   AbstractThe bandspread comprehensive coherent receiver of the… Read More »

Pilot channel transmission method and CDMA mobile communication system

Application Number  00128190 Application Date  2000.10.20 Publication Number  1492608 Publication Date  2004.04.28 Priority Information   1999/10/22 JP 301710/1999   International Classification  H04J13/02;H04Q7/30;H04Q7/32   Applicant(s) Name  NTT Docomo, Inc.   Address     Inventor(s) Name  Usuta Masafumi;Ishikawa Yoshihiro   Patent Agency Code  11038 Patent Agent  yang guoxu AbstractA pilot channel transmission method is provided of transmitting… Read More »

Array receiving method and device for CDMA wireless communication system

Application Number: 00119753Application Date: 2000.08.24Publication Number: 1340931Publication Date: 2002.03.20Priority Information: International: H04B1/16;H04J13/00Applicant(s) Name: Huawei Technology Co LtdAddress: Inventor(s) Name: Zhang Jinlin;Wu Hebing;Li JiangPatent Agency Code: 31100Patent Agent: zuo yibengAbstract An array receiving method for CDMA wireless communication system include such steps as extracting signals from receiver array, calculating the autocorrelation array of the said signals… Read More »

CDMA transmission system

Application Number: 00126217Application Date: 1994.06.16Publication Number: 1308428Publication Date: 2001.08.15Priority Information: 1993/6/16 DE P4319830.9International: H04B7/26;H04J13/00Applicant(s) Name: Koninklijke Philips Electronics N.V.Address: Inventor(s) Name: H. PenzePatent Agency Code: 72001Patent Agent: li efeiAbstract The invention relates to a CDMA transmission system comprising at least a transmitter in which a data sequence is spread with a code sequence, and comprising… Read More »

Multi-path search method and device of CDMA communication system

Application Number: 00115314Application Date: 2000.03.30Publication Number: 1315792Publication Date: 2001.10.03Priority Information: International: H04J13/02Applicant(s) Name: Huawei Technology Co LtdAddress: Inventor(s) Name: Chen Yuan;Duan WeimingPatent Agency Code: 31100Patent Agent: zhou chengAbstract A multi-path search method for CDMA system includes such stops as follows: alpha filter of multi-path search energy window output from matching correlator, and judging the search… Read More »

Discontinuous emission treating method and device in wideband CDMA system

Application Number: 00119764Application Date: 2000.08.24Publication Number: 1325200Publication Date: 2001.12.05Priority Information: International: H04J13/00Applicant(s) Name: Zhongxing Communication Co., Ltd., ShenzhenAddress: Inventor(s) Name: Jin Kuanjun;Wang Lei;Pu YingchunPatent Agency Code: 00000Patent Agent: Abstract The present invention discloses a method for implementing and processing DTX bit in WCDMA system and its equipment. Said method adopts increment of indicating bit to… Read More »

Method for overload control in CDMA cellular communication system

Application Number: 00127306Application Date: 2000.11.06Publication Number: 1352510Publication Date: 2002.06.05Priority Information: International: H04Q7/20;H04Q7/22Applicant(s) Name: Zhongxing Communication Co., Ltd., ShenzhenAddress: Inventor(s) Name: Cui YinchuanPatent Agency Code: 00000Patent Agent: Abstract The invention discloses a method for controlling overload in cellular communication system with code division multiple access. Preposed computer in front of HLR system carries on controlling of… Read More »

Coherent arithmetic unit in CDMA bandspread communication system

Application Number: 00115665Application Date: 2000.05.11Publication Number: 1324158Publication Date: 2001.11.28Priority Information: International: H04J13/02Applicant(s) Name: Huawei Techn. Co., Ltd.Address: Inventor(s) Name: Wang Yang;Wu GengshiPatent Agency Code: 31100Patent Agent: zhou chengAbstract The coherent arithmetic unit consists of multiplier and accumulator. Compared with the coherent arithmetic unit in prior art CDMA communication system, a phase inverter and four transition… Read More »

Interference offset device of CDMA receiver

Application Number: 00119919Application Date: 2000.06.30Publication Number: 1291020Publication Date: 2001.04.11Priority Information: 1999/7/2 JP 188934/1999International: H04J13/02;H04Q7/30Applicant(s) Name: Fujitsu Ltd.Address: Inventor(s) Name: Seki Hiriyuki;Nimi TetsuhiroPatent Agency Code: 11038Patent Agent: wu liliAbstract The interference canceler device is provided with one or more interference removing stages for removing interference from a received signal by generating interference replicas for individual channels… Read More »

Sending and receiving installation for synchronous CDMA network of multipoint-to-one-point

Application Number: 00117887Application Date: 2000.06.05Publication Number: 1278681Publication Date: 2001.01.03Priority Information: 1999/6/18 DE 19928019.3International: H04J13/00Applicant(s) Name: AlcatelAddress: Inventor(s) Name: Jugen Ensli;Mark PalersPatent Agency Code: 11038Patent Agent: luo echuanAbstract The object of the invention is to provide an acquisition method for a multipoint-to-point CDMA network (NET) that minimizes the influence of the acquisition procedure on the information… Read More »

Method and device for making code synchronous trapping in CDMA communication system

Application Number: 00120324Application Date: 2000.05.25Publication Number: 1275844Publication Date: 2000.12.06Priority Information: 1999/5/25 KR 18854/1999International: H04B15/00;H04J13/00;H04L27/00Applicant(s) Name: Samsung Electroics Co., Ltd.Address: Inventor(s) Name: Kim Chi-Yong;Park Hyong-UnPatent Agency Code: 11038Patent Agent: fu jianjunAbstract A method and device for acquiring initial code synchronization, in a reception system for receiving a code division multiple access (CDMA) signal, is provided. In… Read More »

Multipath search method and device for CDMA communication system

Application Number: 00111563Application Date: 2000.01.27Publication Number: 1307413Publication Date: 2001.08.08Priority Information: International: H04J13/02Applicant(s) Name: Huawei Technology Co., Ltd.Address: Inventor(s) Name: Wang Yang;Wu GengshiPatent Agency Code: 31100Patent Agent: zhou chengAbstract In the multipath search method and device using adaptive threshold technology, multichannel sliding correlators are used in the correlation calculation of local PN code address and input… Read More »

Method for equalizing service of Eb/1 ratio in multiple CDMA system

Application Number: 00118065Application Date: 2000.04.20Publication Number: 1275873Publication Date: 2000.12.06Priority Information: 1999/4/21 FR 99/05047; 1999/6/23 FR 99/08041International: H04Q7/20Applicant(s) Name: Europe Mitsubishi Communication Co., Ltd.Address: Inventor(s) Name: V. BelaychePatent Agency Code: 72001Patent Agent: chen jingjunAbstract The invention relates to a method for configuring a telecommunication system comprising at least one sending entity and one receiving entity between… Read More »

Mixed CDMA access method

Application Number: 00121562Application Date: 2000.08.11Publication Number: 1338840Publication Date: 2002.03.06Priority Information: International: H04L5/14Applicant(s) Name: Huanuo Information Technology Co Ltd, BeijingAddress: Inventor(s) Name: Zhang QinPatent Agency Code: 72003Patent Agent: chen gongAbstract A mixed CDMA access method combining TDMA with CDMA is disclosed. For the communication channel, TDMA is used to divide the channel into multiple time slices.… Read More »

Chaotic spectrum-spreading address code method in CDMA system

Application Number: 00113085Application Date: 2000.06.29Publication Number: 1331524Publication Date: 2002.01.16Priority Information: International: H04J13/00Applicant(s) Name: Chongqing Post and Telecommunication CollegeAddress: Inventor(s) Name: Wang Lin;Yu Juebang;Li JibinPatent Agency Code: 51123Patent Agent: kang haiyanAbstract A chaotic spectrum-spreading method of address codes in CDMA system features use of chaotic mapping as spectrum-spreading code. Its function equation is X(n+1)=f(x(n)). In the… Read More »

System and method of large-size CDMA service cell

Application Number: 00118188Application Date: 2000.06.13Publication Number: 1308466Publication Date: 2001.08.15Priority Information: 1999/12/29 US 09/473712International: H04Q7/20Applicant(s) Name: Northern Telecom Networks Ltd.Address: Inventor(s) Name: S.R. Schudelei;M.K. Islamo;H. RenPatent Agency Code: 72001Patent Agent: zou guangxinAbstract Methods and apparatuses are provided for CDMA (code division multiple access) access availability to a large cell area, and for traffic channel establishment. A… Read More »

CDMA receiver and receiving signal power measuring equipment for CDMA mobile communication system

Application Number: 00121634Application Date: 2000.07.21Publication Number: 1282156Publication Date: 2001.01.31Priority Information: 1999/7/21 JP 206789/1999International: H04B7/26;H04Q7/30;H04Q7/32Applicant(s) Name: NTT Dukemo Co., Ltd.Address: Inventor(s) Name: Usuta Masashi;Ishikawa Yoshihiro;Okami JokuraPatent Agency Code: 11038Patent Agent: luo echuanAbstract In a CDMA reception apparatus, averaging means for averaging at least one of vector, amplitude and power of received signal of a plurality of… Read More »

Automatic frequency control method and device in broadband CDMA system

Application Number: 00114058Application Date: 2000.02.01Publication Number: 1264228Publication Date: 2000.08.23Priority Information: International: H04J13/00Applicant(s) Name: Zhongxing Communication Co., Ltd., Shenzhen CityAddress: Inventor(s) Name: Mo Yiqun;Zhang Jun;Wang YuPatent Agency Code: 00000Patent Agent: Abstract An automatic frequency control method for the wide-band CDMA system in frequency-divided duplex (FDD) mode of the third generation mobile communication includes such steps as… Read More »

Method and apparatus for detecting CDMA system volume lowering

Application Number: 00118389Application Date: 2000.06.14Publication Number: 1277501Publication Date: 2000.12.20Priority Information: 1999/6/15 US 09/333,009International: H04B17/00Applicant(s) Name: Lucent Technologies Inc.Address: Inventor(s) Name: James Johan Madden;Thomas E. WongPatent Agency Code: 11038Patent Agent: jiang shixunAbstract The invention provides a computer implemented method and apparatus for determining if a wireless telecommunication system is operating at a reduced capacity. The method… Read More »

CDMA broadcast scheduler program based on service quality

Application Number: 00124041Application Date: 2000.08.24Publication Number: 1286546Publication Date: 2001.03.07Priority Information: 1999/8/25 US 09/385,583International: H04J13/00;H04Q7/20Applicant(s) Name: Lucent Technologies Inc.Address: Inventor(s) Name: T. Si-Feng Cheng;S.A. GlandseyPatent Agency Code: 11038Patent Agent: ma gaoAbstract A computer implemented method and apparatus that schedules broadcast short message service (BSMS) messages in a manner that reduces the adverse impact on voice quality… Read More »

Signal source and method for testing broad-band CDMA system

Application Number: 00114087Application Date: 2000.03.01Publication Number: 1306382Publication Date: 2001.08.01Priority Information: International: H04Q7/34Applicant(s) Name: Zhongxing Communication Co Ltd, Shenzhen CityAddress: Inventor(s) Name: Tian Wanting;Zhao Guofeng;Ren ZhenPatent Agency Code: 00000Patent Agent: Abstract A testing method and signal source of the base-strip receiving module is used to test the baseband receiving module of WCDMA movable station. The signal… Read More »

Method for shearing capacity in CDMA mobile radio communication system

Application Number: 00118605Application Date: 2000.06.16Publication Number: 1278698Publication Date: 2001.01.03Priority Information: 1999/6/16 EP 99401487.6International: H04Q7/20Applicant(s) Name: AlcatelAddress: Inventor(s) Name: Patric Bulan;Leimi De MontgolfeiPatent Agency Code: 11038Patent Agent: ma gaoAbstract A method for shoring capacity in a code division multiple access mobile radiocommunication system, between a given number of users of said system, a method wherein said… Read More »

CDMA mobile radio system

Application Number: 00124175Application Date: 2000.08.18Publication Number: 1285665Publication Date: 2001.02.28Priority Information: 1999/8/20 EP 99440234.5International: H04J13/00;H04Q7/20Applicant(s) Name: AlcatelAddress: Inventor(s) Name: Semier BraukPatent Agency Code: 11038Patent Agent: luo echuanAbstract In a CDMA mobile telecommunications system with macro cells (C1) and micro cells (C2) the base station of the micro cells (C1) are designed in such a way that… Read More »

Multipath screening method in broadband CDMA system

Application Number: 00114159Application Date: 2000.03.24Publication Number: 1266314Publication Date: 2000.09.13Priority Information: International: H04J13/00Applicant(s) Name: Zhongxing Communication Co., Ltd., Shenzhen CityAddress: Inventor(s) Name: Zhang JunfengPatent Agency Code: 00000Patent Agent: Abstract The multipath screening method in WCDMA includes the following steps: firstly, selecting out sample points of energy information being above threshold value; arranging energy informations of selected… Read More »

Interference eliminator in CDMA receiver

Application Number: 00118791Application Date: 2000.06.29Publication Number: 1287424Publication Date: 2001.03.14Priority Information: 1999/7/2 JP 188911/1999International: H04J13/02;H04Q7/30Applicant(s) Name: Fujitsu Ltd.Address: Inventor(s) Name: Nimi Tetsuhiro;Seki Hiroyuki;Tanaka YoshikiPatent Agency Code: 11038Patent Agent: wu liliAbstract Interference eliminator in code division multiple access(CDMA)receiver is able to eliminate interference from the received signal by multiplying the interference replication with an adjustment coefficient and… Read More »

Primary district search method for acturating in high speed searching primary district in CDMA system

Application Number: 00124704Application Date: 2000.09.13Publication Number: 1288306Publication Date: 2001.03.21Priority Information: 1999/9/14 JP 260461/1999International: H04J13/00;H04Q7/36Applicant(s) Name: NEC Corp.Address: Inventor(s) Name: Tamura KoichiPatent Agency Code: 11021Patent Agent: zhu haibeiAbstract On ending communication, a timer ( 17 ) is started in order to watch a communication stop time interval (S 1 , S 2 ). On staring the… Read More »

GSM network and CDMA network shared short message center and its implementation

Application Number: 00114286Application Date: 2000.05.18Publication Number: 1310537Publication Date: 2001.08.29Priority Information: International: H04L12/66;H04Q7/22Applicant(s) Name: Zhongxing Communication Co., Ltd., ShenzhenAddress: Inventor(s) Name: Luo Shengmei;Shen MinPatent Agency Code: 00000Patent Agent: Abstract A shared short information centre of GSM network and CDMA network and its realization method include the steps of receiving short information, making a judgement according to… Read More »