[특허]Direct sequence code division multiple access (DS-CDMA) communication system and a receiver for use in such a system

Direct sequence code division multiple access (DS-CDMA) communication system and a receiver for use in such a system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-013/04
출원번호	US-0295449 (1994-08-24)
우선권정보	GB-0017604 (1993-08-24)
발명자 / 주소	Monogioudis Pantelis N. (Athens GRX) Edmonds John M. (Horley GB2)
출원인 / 주소	U.S. Philips Corporation (New York NY 02)
인용정보	피인용 횟수 : 134 인용 특허 : 0

초록 ▼

A DS-CDMA system comprises at least one transmitter and at least one receiver operating on a dedicated signal channel which is used by other DS-CDMA operators in a non-synchronous way. A receiver for use in such a DS-CDMA system includes a data aided multiuser interference canceller (38) comprising a feedforward filter (48) connected to a subtracting stage (50). A decision stage (52) is connected to an output of the subtracting stage (50). Decisions from the decision stage (52) are stored in a memory which also stores preliminary decisions made on the signal applied to the feedforward filter (48) by a simple receiver (46). These decisions are applied to a feedback filter (58) the output of which is connected to the subtracting stage (50) thereby removing the effects of pre-cursive and post-cursive interference. The input to, and output from, the decision stage 52 are compared and the difference is used for adjusting the tap weights of the feedforward and feedback filters (48,58). In the case of a single input, single output, the feedforward filter (48) comprises a fractionally spaced equalizer which despreads and filters the DS-CDMA signal. In the case of multiple input, multiple output, the received signal is despread in a bank of code matched filters and the output is applied to the canceller (38) in which the feedforward filter (48) comprises a linear synchronous equalizer.

대표청구항 ▼

A direct sequence-code division multiple access (DS-CDMA) system, having associated therewith cross correlation values among contemporaneous users, the system comprising: a transmitter and a receiver, the transmitter having means for multiplying a modulating signal with a spreading sequence in order to form a spread spectrum signal and means for transmitting the spread spectrum signal on a CDMA channel, and the receiver comprising receiving means for receiving signals on said CDMA channel, and interference cancelling means for cancelling multiple access interference, said interference cancelling means including an input coupled to the receiving means for receiving the received signals, feedforward filtering means coupled to the input for processing the received signals, quantizing means coupled to the feedforward filtering means for producing quantized decisions from information derived from the feedforward filtering means, tentative decision means coupled to the input for making tentative decisions on the received signals, characterizing means, coupled to the tentative decision means and the quantizing means, for characterizing the CDMA channel in dependence on the cross correlation values of all the contemporaneous users, and adjusting means responsive to the characterizing means for adjusting tap weights of at least the feedforward filtering means so as to cancel substantially multiple access interference.

이 특허를 인용한 특허 (134)

Agee, Brian G.; Bromberg, Matthew C., Apparatus for calculating weights associated with a first signal and applying the weights to a second signal.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Apparatus for calculating weights associated with a received signal and applying the weights to transmit data.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Apparatus for generating at least one signal based on at least one aspect of at least two received signals.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Apparatus for transmitting a signal including transmit data to a multiple-input capable node.
상세보기
Agee, Brian G; Bromberg, Matthew C, Apparatus for transmitting a signal including transmit data to a multiple-input capable node.
상세보기
Mathew, George; Mastrocola, Angelo R.; Greene, Robert A., Array-reader based magnetic recording systems with quadrature amplitude modulation.
상세보기
Lomp, Gary R.; Ozluturk, Faith M.; Kowalski, John, Automatic power control system for a code division multiple access (CDMA) communications system.
상세보기
Trans, Francois; Le-Ngoc, Tho, Channel equalization system and method.
상세보기
Ozluturk, Fatih M.; Jacques, Alexander M.; Lomp, Gary R.; Kowalski, John, Code division multiple access (CDMA) communication system.
상세보기
Madhow Upamanyu ; Frank Colin D. ; Rasky Phillip D., Communication device and method for interference suppression in a DS-CDMA system.
상세보기
Visotsky Yevgeny ; Frank Colin D. ; Madhow Upamanyu ; Singh Rahul, Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Data routing for OFDM transmission based on observed node capacities.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Data routing for OFDM transmissions.
상세보기
Park Jong-Hyeon,KRX ; Kim Je-Woo,KRX, Data transmitter and receiver of a DS-CDMA communication system.
상세보기
Park, Jong-Hyeon; Kim, Je-Woo, Data transmitter and receiver of a DS-CDMA communication system.
상세보기
Joachim Hagenauer DE; Rupert Herzog DE; Andreas Schmidbauer DE, Decoding method and decoding device for a CDMA transmission system for demodulating a received signal available in serial code concatenation.
상세보기
Feng, Wei; Wang, Lei, Detector pruning control system.
상세보기
Chang, Wu; Krachkovsky, Victor; Yang, Shaohua; Xia, Haitao, Detector with soft pruning.
상세보기
Krüger, Martin, Device and method for control scaling and quantization of soft output values from an equalizer.
상세보기
Yang Jian (Mansfied MA) Eyuboglu M. Vedat (Concord MA), Device and method for data signal detection in the presence of distortion and interference in communication systems.
상세보기
Zeira,Ariela, Efficient multiple input multiple output system for multi-path fading channels.
상세보기
Karabed, Razmik; Yang, Shaohua; Chang, Wu; Krachkovsky, Victor, Encoder and decoder generation by state-splitting of directed graph.
상세보기
Liu, Tian-Min; Tan, Loke Kun; Jaffe, Steven T., Equalization and decision-directed loops with trellis demodulation in high definition TV.
상세보기
Liu,Tian Min; Tan,Loke Kun; Jaffe,Steven T., Equalization and decision-directed loops with trellis demodulation in high definition TV.
상세보기
Kuo, Chih-Cheng; Yang, Wen-Chieh; Tung, Tai-Lai, Equalizer apparatus and Viterbi algorithm based decision method.
상세보기
Seong Rag Kim KR; Jeong Goo Lee KR; Nam Jin Park KR; Hun Lee KR, Interference canceling method and apparatus of a multi-mode subtraction type in asynchronous multipath channels of code division multiple access system.
상세보기
Yang, Shaohua; Bolotov, Anatoli A.; Wang, Chung-Li; Li, Zongwang; Li, Shu; Grinchuk, Mikhail I, Irregular low density parity check decoder with low syndrome error handling.
상세보기
Eidson, Donald Brian; Krieger, Abraham; Murali, Ramaswamy, Iterative decoder employing multiple external code error checks to lower the error floor.
상세보기
Wang, Chung-Li; Li, Zongwang; Yang, Shaohua, LDPC decoder with targeted symbol flipping.
상세보기
Vigneron,Philip Julius; Duggan,Jason Robert; Xu,Hua, Low complexity interference cancellation.
상세보기
Li, Shu; Li, Zongwang; Yang, Shaohua; Wang, Chung-Li; Zhang, Fan, Low density parity check decoder with dynamic scaling.
상세보기
Li, Shu; Li, Zongwang; Yang, Shaohua; Zhang, Fan, Low density parity check decoder with flexible saturation.
상세보기
Krachkovsky, Victor; Chang, Wu; Karabed, Razmik; Yang, Shaohua, Low latency enumeration endec.
상세보기
Seago, Bradley D.; Dziak, Scott M.; Liu, Jingfeng, Low latency multi-detector noise cancellation.
상세보기
Li, Ye; Sollenberger, Nelson Ray; Winters, Jack Harriman, MIMO OFDM system.
상세보기
Li, Ye; Sollenberger, Nelson Ray; Winters, Jack Harriman, MIMO OFDM system.
상세보기
Li,Ye; Sollenberger,Nelson Ray; Winters,Jack Harriman, MIMO OFDM system.
상세보기
Francois Trans, Means and method for a synchronous network communications system.
상세보기
Trans, Francois, Means and method for increasing performance of interference-suppression based receivers.
상세보기
John E. Smee ; Stuart C. Schwartz, Method and apparatus for adaptively compensating channel or system variations in precoded communications system.
상세보기
Jayaraman,Srikant; Corbaton,Ivan Jesus Fernandez; Smee,John E., Method and apparatus for adjusting delay in systems with time-burst pilot and fractionally spaced equalizers.
상세보기
Geer, James L., Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns.
상세보기
Zeira, Ariela, Method and apparatus for transferring signals in a wireless communication system.
상세보기
Zeira,Ariela, Method and apparatus for transferring signals in a wireless communication system.
상세보기
Roumy,Aline; Pirez,Didier; Fijalkow,Inbar, Method and device for demodulating signals from multiple users.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks.
상세보기
Agee, Brian G; Bromberg, Matthew C., Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks.
상세보기
Wang, Chung-Li; Li, Zongwang; Li, Shu; Zhang, Fan; Yang, Shaohua, Min-sum based hybrid non-binary low density parity check decoder.
상세보기
Wang, Chung-Li; Li, Zongwang; Yang, Shaohua, Min-sum based non-binary LDPC decoder.
상세보기
Chen, Lei; Li, Zongwang; Yen, Johnson; Yang, Shaohua, Mixed domain FFT-based non-binary LDPC decoder.
상세보기
Chen, Lei; Yen, Johnson; Yang, Shaohua, Multi-level LDPC layer decoder.
상세보기
Wang, Chung-Li; Li, Zongwang; Chen, Lei; Yen, Johnson, Multi-level LDPC layer decoder.
상세보기
Liao, Yu; Xia, Haitao; Xiao, Jun, Multi-path data processing system.
상세보기
Mottier,David, Multi-user detection method.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Multi-user transmissions.
상세보기
Thielecke Jorn,DEX ; Granzow Wolfgang,DEX, Multiple access digital transmission system and a radio base station and a receiver for use in such a system.
상세보기
Schilling, Donald L., Multiple-input multiple-output (MIMO) spread-spectrum system and method.
상세보기
Toda Takeshi,JPX ; Tanaka Yoshinori,JPX ; Kobayakawa Shuji,JPX ; Seki Hiroyuki,JPX ; Tsutsui Masafumi,JPX, Multistage interference canceller.
상세보기
Suzuki, Hideto, Multiuser interference canceler for DS-CDMA system.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Network communication using diversity.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Network communication using diversity.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Network communication using diversity.
상세보기
Li, Zongwang; Wang, Chung-Li; Xu, Changyou, Non-binary LDPC decoder with low latency scheduling.
상세보기
Liu, Dan; Zuo, Qi; Wang, Chung-Li; Li, Zongwang; Wang, Lei, Non-binary layered low density parity check decoder.
상세보기
Liao, Yu; Song, Hongwei; Liu, Jingfeng; Zhang, Haotian, Nyquist constrained digital finite impulse response filter.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Originator and recipient based transmissions in wireless communications.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Originator and recipient based transmissions in wireless communications.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Originator and recipient based transmissions in wireless communications.
상세보기
Liao, Yu; Aravind, Nayak Ratnakar, Oversampled data processing circuit with multiple detectors.
상세보기
Chen, Lei; Yen, Johnson, Probability-based multi-level LDPC decoder.
상세보기
Dehghan, Hossein; Chen, Ting-Yin, Robust adaptive equalizer.
상세보기
Liu, Dan; Zuo, Qi; Wang, Chung-Li; Li, Zongwang; Wang, Lei, Shift register-based layered low density parity check decoder.
상세보기
Huang,Howard C; Mailaender,Laurence Eugene; Sandell,Magnus; Viswanathan,Harish, Signal detection by a receiver in a multiple antenna time-dispersive system.
상세보기
Ueno Hiroaki,JPX, Signal reproducing method and apparatus.
상세보기
Yugawa Takahiro,JPX, Spread spectrum communication receiver.
상세보기
Whight, Kenneth R.; Mee, Martin L., Spread spectrum receiver.
상세보기
Andren, Carl; Webster, Mark A., Spread spectrum transceiver for use in wireless local area network and having multipath mitigation.
상세보기
Ayman K. Ghobrial ; Steven R. Blackwell, Stepwise adaptive finite impulse response filter for spread spectrum radio.
상세보기
Krishnan, Anantha Raman; Miladinovic, Nenad; Han, Yang; Yang, Shaohua, Stochastic stream decoding of binary LDPC codes.
상세보기
Chen, Lei; Xia, Haitao; Jin, Ming; Yen, Johnson, Symbol flipping data processor.
상세보기
Zhang, Yequn; Han, Yang; Lim, Yu Chin Fabian; Li, Shu; Zhang, Fan; Yang, Shaohua, Systems and methods for FAID follower decoding.
상세보기
Lu, Lu; Xia, Haitao; Cao, Rui, Systems and methods for X-sample based noise cancellation.
상세보기
Zhang, Fan; Jin, Ming; Yang, Shaohua; Xia, Haitao, Systems and methods for adaptive decoder message scaling.
상세보기
Panteleev, Pavel A.; Gasanov, Elyar E.; Sokolov, Andre P.; Shutkin, Yuri; Alekseev, Dmitriy V., Systems and methods for area efficient data encoding.
상세보기
Zhang, Fan; Yang, Shaohua; Han, Yang; Wang, Chung-Li; Tan, Weijun, Systems and methods for compression driven variable rate decoding in a data processing system.
상세보기
Zhang, Fan; Yang, Shaohua, Systems and methods for conditional positive feedback data decoding.
상세보기
Li, Shu; Xiao, Jun; Zhang, Fan, Systems and methods for data processing control.
상세보기
Yang, Shaohua; Lu, Jin, Systems and methods for data processing including pre-equalizer noise suppression.
상세보기
Zhang, Fan; Li, Shu; Xiao, Jun; Nguyen, Kaitlyn T., Systems and methods for data processing using global iteration result reuse.
상세보기
Zhang, Fan; Xiao, Jun; Jin, Ming, Systems and methods for detector side trapping set mitigation.
상세보기
Cai, Yu; Wu, Yunxiang; Haratsch, Erich F.; Chen, Ning, Systems and methods for differential message scaling in a decoding process.
상세보기
Cai, Yu; Wu, Yunxiang; Haratsch, Erich F.; Chen, Ning, Systems and methods for differential message scaling in a decoding process.
상세보기
Li, Shu; Yang, Shaohua; Li, Zongwang; Han, Yang, Systems and methods for distributed low density parity check decoding.
상세보기
Yang, Shaohua; Ivkovic, Milos, Systems and methods for dynamic scaling in a data decoding system.
상세보기
Tan, Weijun; Yang, Shaohua; Fitzpatrick, Kelly; Li, Zongwang; Zhong, Hao, Systems and methods for dynamic scaling in a read data processing system.
상세보기
Wilson, Bruce A.; Yang, Shaohua; Li, Shu, Systems and methods for enhanced data encoding and decoding.
상세보기
Zhang, Fan; Chang, Wu; Yang, Shaohua; Jin, Ming, Systems and methods for enhanced local iteration randomization in a data decoder.
상세보기
Yen, Johnson, Systems and methods for evaluating and debugging LDPC iterative decoders.
상세보기
Xia, Haitao; Lu, Lu; Li, Shu; Wu, Xuebin, Systems and methods for fragmented data recovery.
상세보기
Zhang, Fan; Li, Shu; Xiao, Jun; Yang, Shaohua, Systems and methods for governing in-flight data sets in a data processing system.
상세보기
Yang, Shaohua; Wilson, Bruce A., Systems and methods for hard disk drive region based data encoding.
상세보기
Li, Shu; Yang, Shaohua; Zhang, Fan; Wang, Chung-Li, Systems and methods for hybrid layer data decoding.
상세보기
Wu, Xuebin; Chang, Wu; Yang, Shaohua; Zhang, Fan, Systems and methods for improved data detection processing.
상세보기
Zhang, Fan; Yang, Shaohua; Han, Yang; Wang, Chung-Li, Systems and methods for local iteration randomization in a data decoder.
상세보기
Li, Shu; Zhang, Fan; Wilson, Bruce A.; Xiao, Jun, Systems and methods for multi-algorithm concatenation encoding and decoding.
상세보기
Pan, Lu; Lu, Lu; Xia, Haitao, Systems and methods for multi-level encoding and decoding.
상세보기
Zhang, Fan; Li, Zongwang; Han, Yang; Yang, Shaohua, Systems and methods for multi-matrix data processing.
상세보기
Zhang, Fan; Yang, Shaohua, Systems and methods for multi-pass alternate decoding.
상세보기
Li, Zongwang; Kou, Yu; Wang, Chung-Li; Yang, Shaohua; Li, Shu, Systems and methods for multi-stage encoding of concatenated low density parity check codes.
상세보기
Li, Zongwang; Yang, Shaohua; Zhang, Fan, Systems and methods for non-binary LDPC encoding.
상세보기
Yang, Shaohua; Wilson, Bruce A., Systems and methods for non-zero syndrome based processing.
상세보기
Sun, Lingyan; Song, Hongwei; Lee, YuanXing, Systems and methods for out of order Y-sample memory management.
상세보기
Grinchuk, Mikhail I; Bolotov, Anatoli A.; Yang, Shaohua; Krachkovsky, Victor; Li, Zongwang, Systems and methods for penalty based multi-variant encoding.
상세보기
Zhang, Haotian, Systems and methods for post processing gain correction.
상세보기
Yang, Shaohua; Wu, Xuebin; Li, Shu, Systems and methods for recovered data stitching.
상세보기
Li, Shu; Bolotov, Anatoli A.; Yang, Shaohua; Zhang, Fan, Systems and methods for reduced constraint code data processing.
상세보기
Ratnakar Aravind, Nayak; Dziak, Scott M.; Xia, Haitao, Systems and methods for reduced latency loop correction.
상세보기
Li, Shu; Li, Zongwang; Yang, Shaohua; Zhang, Fan; Wang, Chung-Li, Systems and methods for reusing a layered decoder to yield a non-layered result.
상세보기
Han, Yang; Yang, Shaohua; Chen, Zhi Kai; Wang, Lei; Xu, Changyou, Systems and methods for scalable data processing shut down.
상세보기
Zhang, Fan, Systems and methods for selectable positive feedback data processing.
상세보기
Yang, Shaohua; Wang, Chung-Li; Bolotov, Anatoli; Wilson, Bruce A., Systems and methods for shared layer data decoding.
상세보기
Yang, Shaohua; Zhang, Fan; Wang, Chung-Li; Li, Shu, Systems and methods for skip layer data decoding.
상세보기
Yang, Shaohua; Xu, Changyou, Systems and methods for throughput enhanced data detection in a data processing circuit.
상세보기
Yang, Shaohua, Systems and methods for variable rate coding in a data processing system.
상세보기
Yang, Shaohua; Ivanovic, Lav D.; Zhang, Fan; Hamilton, Douglas M., Systems and methods for variable redundancy data protection.
상세보기
Jeong, Seongwook; Pan, Lu; Huang, Jianzhong; Xia, Haitao, Systems and methods of converting detector output to multi-level soft information.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Transmission of OFDM symbols.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Transmission of data to multiple nodes.
상세보기
Agee, Brian G.; Bromberg, Matthew C., Transmission of data using a plurality of radio frequency channels.
상세보기
Ozluturk, Fatih M; Pan, Kyle Jung-Lin, Transmit processing using receiver functions.
상세보기
Ozluturk, Fatih; Pan, Jung Lin, Transmit processing using receiver functions.
상세보기
Liu, Dan; Zuo, Qi; Wang, Yong; Han, Yang; Yang, Shaohua, Variable barrel shifter.
상세보기
Apelewicz Tuvia,ILX, Wideband code-division multiple access system and method.
상세보기
Apelewicz Tuvia,ILX, Wideband code-division-multiple access system and method.
상세보기

IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Direct sequence code division multiple access (DS-CDMA) communication system and a receiver for use in such a system 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (134)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

연합인증

Direct sequence code division multiple access (DS-CDMA) communication system and a receiver for use in such a system 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

전체(0) 논문(0) 특허(0) 보고서(0)

이 특허를 인용한 특허 (134)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트