[특허]Differentially encoded pilot word system and method for wireless transmissions of digital data

Differentially encoded pilot word system and method for wireless transmissions of digital data 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04B-015/00
출원번호	US-0344238 (1994-11-23)
발명자 / 주소	Wright Andrew S.,CAX
출원인 / 주소	AT&T Wireless Services, Inc.
인용정보	피인용 횟수 : 71 인용 특허 : 0

초록 ▼

A system and method for transmitting digital data over a wireless channel uses periodically-transmitted, differentially encoded pilot words to allow a receiver to rapidly synchronize with a transmitter. Each differentially encoded pilot word comprises at least two pilot symbols that are separated by a fixed difference. The receiver monitors differences between symbols to locate the differentially encoded pilot words, and to thereby become synchronized with the transmitter. Once the receiver becomes synchronized with the transmitter, the receiver uses the pilot symbols of the differentially encoded pilot words to perform channel estimation and compensation.

대표청구항 ▼

[ What is claimed is:] [11.] A receiver for receiving a stream of symbols transmitted over a wireless channel, the stream of symbols comprising data symbols and comprising pilot symbols that are arranged as differentially encoded pilot words, each differentially encoded pilot word comprising at least two pilot symbols that are separated by a fixed difference, the differentially encoded pilot words being spaced apart in the symbol stream by a pilot period, the receiver comprising:an antenna that receives the stream of symbols as a radio frequency signal;a down-converter that transforms the radio-frequency signal into a baseband signal;a filter that bandlimits the baseband signal;a sampler that samples the baseband signal to generate a stream of symbol values;a detector that detects the periodic position of the differentially encoded pilot words within the stream of symbols by monitoring differences between symbol values of said stream of symbol values over multiple pilot periods;a pilot symbol extractor that extracts the differentially encoded pilot words from the stream of symbols by extracting pilot symbol values from said stream of symbol values;a channel estimator that compares pilot symbol values extracted by said pilot symbol extractor with transmitted pilot symbol values to generate channel estimates;a channel compensator that compensates data symbols in the stream of symbols by using said channel estimates to adjust data symbol values in said stream of symbol values, the channel compensator thereby producing a stream of compensated data symbols; anda demodulator that converts said stream of compensated data symbols to a stream of digital data by converting compensated data symbols into corresponding binary data values.

이 특허를 인용한 특허 (71)

Hartman, David L., Adaptive modulation for fixed wireless link in cable transmission system.
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Murmann, Boris; Oh, Yangjin, Arrangements and methods for providing compensation for non-idealities of components in communications systems.
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Sato,Toshifumi, Cellular system.
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Scarpa,Carl, Channel estimation and compensation techniques for use in frequency division multiplexed systems.
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Hui, Dennis; Zangi, Kambiz, Channel estimation and equalization for hard-limited signals.
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Hoffman, John E.; Nelson, Jr., George Rodney; Proctor, Jr., James A.; Rouphael, Antoine J., Channel structure for a wireless communication system.
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Hoffmann, John E.; Nelson, George Rodney; Proctor, James A.; Rouphael, Antoine J., Communicating reference and data information in a wireless network.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko, Communication method and radio communication apparatus.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko, Communication method and radio communication apparatus.
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Ramesh Rajaram ; Chennakeshu Sandeep, Compensating for fading in analog AM radio signals.
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Michiharu Nakamura JP; Yasuyuki Oishi JP; Kazuo Nagatani JP; Hajime Hamada JP; Yoshihiko Asano JP; Hiroyuki Seki JP; Yoshinori Tanaka JP, Demodulator.
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Choi, Jin-Woo; Yoon, Soon-Young; Kim, Jong-Han; Park, Su-Won; Yeom, Jae-Heung, Device and method for mobile station for receiving signals transmitted from a base station.
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Gray, Martin D., Digital data recording channel.
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Miyoshi, Kenichi; Suzuki, Hidetoshi; Hiramatsu, Katsuhiko; Wengerter, Christian; Golitschek Edler Von Elbwart, Alexander, Integrated circuit.
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Miyoshi, Kenichi; Suzuki, Hidetoshi; Hiramatsu, Katsuhiko; Wengerter, Christian; Golitschek Edler Von Elbwart, Alexander, Integrated circuit.
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Li, Ye, Pilot-aided channel estimation for OFDM in wireless systems.
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Hoffmann, John E.; Nelson, George R.; Proctor, James A.; Rouphael, III, Antoine J., Reverse link pilot integrated with block codes.
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Dunn, J. Eric; Grindahl, Mervin L.; Barnes, Keith, System and method for adaptive modulation.
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Candy,James V.; Meyer,Alan W., Time reversal communication system.
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Fujii, Hiromasa; Suda, Hirohito; Tanaka, Tetsu, Wireless relay system, wireless relay apparatus, and wireless relay method.
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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

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연합인증

Differentially encoded pilot word system and method for wireless transmissions of digital data 원문보기

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Differentially encoded pilot word system and method for wireless transmissions of digital data 원문보기

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연구과제 타임라인

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