[특허]Hybrid SAIC receiver

Hybrid SAIC receiver 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H03H-007/30 H04L-025/03
출원번호	US-0433200 (2009-04-30)
등록번호	US-9160577 (2015-10-13)
발명자 / 주소	Sikri, Divaydeep Abrishamkar, Farrokh De Laurentiis, Nico
출원인 / 주소	QUALCOMM Incorporated
대리인 / 주소	Patel, Ashish L.
인용정보	피인용 횟수 : 0 인용 특허 : 104

초록 ▼

Systems and methods of receiving data in a communication system are disclosed. The methods include equalizing a plurality of samples to suppress intersymbol interference and provide a first set of detected bits based on a first set of reference bits comprising a training sequence on a first iteration. The methods further include suppressing co-channel interference in the plurality of input samples and provide a set of suppressed samples based on a second set of reference bits comprising the first set of detected bits on a second iteration. The methods further include equalizing the set of suppressed samples to suppress intersymbol interference and provide a second set of detected bits based on the second set of reference bits on the second iteration.

대표청구항 ▼

1. A receiver in a wireless communication system, comprising: an interference suppressor configured to suppress co-channel interference;an equalizer configured to suppress intersymbol interference; anda controller configured to: a) control the equalizer to suppress intersymbol interference in a plurality of input samples of a received signal and provide a first set of detected bits based on a first set of reference bits comprising a training sequence on a first iteration;b) control the interference suppressor to suppress co-channel interference in the plurality of input samples and provide a set of suppressed samples based on a second set of reference bits comprising the first set of detected bits on a second iteration; andc) control the equalizer to suppress intersymbol interference in the set of suppressed samples of b) and provide a second set of detected bits based on the second set of reference bits on the second iteration. 2. The receiver according to claim 1, wherein the controller is further configured to compare a strength of the received signal to a threshold prior to performing a)-c); and, if the strength of the received signal is greater than the threshold, skip a)-c) and alternatively: d) control the interference suppressor to suppress co-channel interference in the plurality of input samples to provide a first set of suppressed samples based on the first set of reference bits on a first alternative iteration; ande) control the equalizer to suppress intersymbol interference in the set of suppressed samples of d) to provide a set of detected bits based on the first set of reference bits on the first alternative iteration. 3. The receiver according to claim 2, wherein the controller is further configured to control the interference suppressor and the equalizer to perform one or more subsequent iterations of interference suppression and equalization, respectively, to improve performance. 4. The receiver according to claim 3, wherein the controller, on one of the one or more subsequent iterations, is further configured to: f) control the interference suppressor to suppress co-channel interference in a previous set of suppressed samples to provide a next set of suppressed samples based on a next set of reference bits comprising a set of detected bits obtained on a previous iteration, andg) control the equalizer to suppress intersymbol interference in the next set of suppressed samples of f) to provide a next set of detected bits based on the next set of reference bits. 5. The receiver according to claim 4, wherein the controller is further configured to repeat f)-g) for a plurality of iterations. 6. The receiver according to claim 1, wherein the interference suppressor comprises: a channel estimator configured to derive at least one channel estimate based on the plurality of input samples;a desired signal estimator configured to derive at least one desired signal estimate based on the at least one channel estimate,a weight computation unit configured to compute weights used to suppress co-channel interference; anda filter configured to filter the plurality of input samples with the weights to generate the set of suppressed samples. 7. The receiver according to claim 6, wherein the channel estimator is a least-squares (LS) estimator. 8. The receiver according to claim 6, wherein the filter is a multiple-input multiple-output (MIMO) filter. 9. The receiver according to claim 1, wherein the equalizer comprises: a channel estimator configured to derive a set of one or more channel estimates;a desired signal generator configured to derive a set of one or more desired signal estimates based on the set of one or more channel estimates;a noise correlation matrix generation module configured to compute a noise correlation matrix based on the set of one or more desired signal estimates; anda detector configured to perform detection on received samples. 10. The receiver according to claim 9, wherein the channel estimator is a least-squares (LS) estimator. 11. The receiver according to claim 9, wherein the detector is a maximum likelihood sequence estimator (MLSE). 12. The receiver according to claim 9, if the controller determines that a strength of the received signal is less than or equal to a threshold, the controller is configured to control the equalizer to: perform the detection on the plurality of input samples with a first set of one or more channel estimates to provide the first set of detected bits on the first iteration, the first set of one or more channel estimates having been derived based on the plurality of input samples and the first set of reference bits; andperform the detection on the set of suppressed samples with a second set of one or more channel estimates and the noise correlation matrix to provide the second set of detected bits on the second iteration, the second set of one or more channel estimates having been derived based on the plurality of input samples and the second set of reference bits. 13. A method for processing input samples of a signal received in a wireless communication system, the method comprising: a) equalizing a plurality of input samples to suppress intersymbol interference and provide a first set of detected bits based on a first set of reference bits comprising a training sequence on a first iteration;b) suppressing co-channel interference in the plurality of input samples and provide a set of suppressed samples based on a second set of reference bits comprising the first set of detected bits on a second iteration; andc) equalizing the set of suppressed samples of the step b) to suppress intersymbol interference and provide a second set of detected bits based on the second set of reference bits on the second iteration. 14. The method according to claim 13, wherein the step a) comprises: deriving a first set of one or more channel estimates based on the plurality of input samples and the first set of reference bits; anddetecting the plurality of input samples based on the first set of one or more channel estimates. 15. The method according to claim 13, wherein the step c) comprises: deriving a second set of one or more channel estimates based on the set of suppressed samples and the second set of reference bits;deriving a set of one or more desired signal estimates based on the set of suppressed samples and the second set of one or more channel estimates;computing a noise correlation matrix based on the set of suppressed samples and the set of one or more desired signal estimates; anddetecting the plurality of input samples based the second set of one or more channel estimates and the noise correlation matrix. 16. The method according to claim 13, further comprising comparing a strength of the received signal to a threshold prior to the steps a)-c); and if the strength of the received signal is greater than the threshold, skipping the steps a)-c) and alternatively: d) suppressing co-channel interference in the plurality of input samples to provide a set of suppressed samples based on the first set of reference bits on a first alternative iteration; ande) equalizing the set of suppressed samples of the step d) to provide a set of detected bits based on the first set of reference bits on the first alternative iteration. 17. The method according to claim 16, further comprising performing one or more subsequent iterations of interference suppression and equalization to improve performance. 18. The method according to claim 17, further comprising, on one of the one or more subsequent iterations: f) suppressing co-channel interference in a previous set of suppressed samples to provide a next set of suppressed samples based on a next set of reference bits comprising a set of detected bits obtained on a previous iteration, andg) equalizing the next set of suppressed samples of the step f) to provide a next set of detected bits based on the next set of reference bits. 19. The method according to claim 18, wherein the steps f)-g) are repeated for a plurality of iterations. 20. The method according to claim 16, wherein the threshold is determined at a product design stage based at least in part on a background white noise level of the receiver. 21. A receiver comprising: first interference suppressing means for suppressing co-channel interference;second interference suppressing means for suppressing intersymbol interference; andcontrolling means for:a) controlling the second interference suppressing means to suppress intersymbol interference in a plurality of input samples of a received signal and provide a first set of detected bits based on a first set of reference bits comprising a training sequence on a first iteration;b) controlling the first interference suppressing means to suppress co-channel interference in the plurality of input samples and provide a set of suppressed samples based on a second set of reference bits comprising the first set of detected bits on a second iteration; andc) controlling the second interference suppressing means to suppress intersymbol interference in the set of suppressed samples of b) and provide a second set of detected bits based on the second set of reference bits on the second iteration. 22. A machine-readable non-transitory medium comprising instructions for processing input samples of a signal received in a wireless communication system, the instructions comprising code for: a) equalizing a plurality of input samples to suppress intersymbol interference and provide a first set of detected bits based on a first set of reference bits comprising a training sequence on a first iteration;b) suppressing co-channel interference in the plurality of input samples and provide a set of suppressed samples based on a second set of reference bits comprising the first set of detected bits on a second iteration; andc) equalizing the set of suppressed samples of the step b) to suppress intersymbol interference and provide a second set of detected bits based on the second set of reference bits on the second iteration.

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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

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

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Hybrid SAIC receiver 원문보기

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Hybrid SAIC receiver 원문보기

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