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1. (WO2013048065) ORTHOGONAL COMPLEX PRE-CODING APPARATUS AND METHOD IN AN OPEN LOOP MULTI-ANTENNA SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2013/048065    International Application No.:    PCT/KR2012/007582
Publication Date: 04.04.2013 International Filing Date: 21.09.2012
IPC:
H04L 27/26 (2006.01), H04B 7/04 (2006.01), H04L 1/16 (2006.01)
Applicants: SEOUL NATIONAL UNIVERSITY OF SCIENCE & TECHNOLOGY [KR/KR]; (Gongneung-dong, Seoul National University of Science & Technology) 232, Gongneung-ro, Nowon-gu, Seoul 139-743 (KR)
Inventors: JANG, Jung-Yup; (KR)
Agent: KIM, Yoon-Bo; (guro-dong 197-5) Shinsol Patent & Law Firm, 308ho, Samsung IT Valley, Digital-ro 33Gil 27, Guro-gu Seoul 152-848 (KR)
Priority Data:
10-2011-0097217 27.09.2011 KR
10-2012-0103487 18.09.2012 KR
Title (EN) ORTHOGONAL COMPLEX PRE-CODING APPARATUS AND METHOD IN AN OPEN LOOP MULTI-ANTENNA SYSTEM
(FR) APPAREIL ET PROCÉDÉ DE PRÉCODAGE COMPLEXE ORTHOGONAL DANS UN SYSTÈME À ANTENNES MULTIPLES EN BOUCLE OUVERTE
(KO) 개루프 다중안테나 시스템에서 직교 복소 전치 부호화 장치 및 방법
Abstract: front page image
(EN)The present invention relates to a multiple input multiple output (MIMO) system which is a multi-antenna system, and more particularly, to an orthogonal complex pre-coding apparatus and method in an open loop multi-antenna system, which can prevent a degradation of a performance of an open loop transmission correlation MIMO fading channel that may not receive a feedback on a channel environment from a receiving side differently from a broadcasting system. The apparatus and method of the present invention may pre-code (also called as "pre-coding") a transmission signal separated as a pre-code in consideration of a worst complex channel environment that can prevent the degradation of a performance of an average received signal under the assumption that a transmission correlation coefficient is the worst, thus preventing the degradation of transmitted signal receiving performance of a channel without feedback information of a receiver, and consequently lowering a system error probability (PEP). The apparatus and method of the present invention may not have a feedback structure, thereby lowering a complexity and overhead of a system.
(FR)La présente invention se rapporte à un système à entrées multiples et à sorties multiples (MIMO) qui est un système à antennes multiples et plus particulièrement, à un appareil et à un procédé de précodage complexe orthogonal dans un système à antennes multiples en boucle ouverte, qui permettent d'empêcher une dégradation des performances d'un canal sujet à des évanouissements MIMO de corrélation de transmission en boucle ouverte qui ne peut pas recevoir une rétroaction sur un environnement de canal en provenance d'un côté réception différemment d'un système de diffusion générale. L'appareil et le procédé de la présente invention peuvent précoder (ce qui est également désigné sous le nom de « précodage ») un signal de transmission séparé en tant que précode compte tenu du pire environnement de canal complexe qui permet d'empêcher la dégradation des performances d'un signal reçu moyen en supposant que le coefficient de corrélation de transmission soit le pire, en empêchant de ce fait une dégradation des performances de réception du signal transmis d'un canal sans informations de rétroaction d'un récepteur et en abaissant par conséquent la probabilité d'erreur du système (PEP). L'appareil et le procédé de la présente invention peuvent ne pas présenter une structure de rétroaction, en abaissant de ce fait la complexité et les coûts d'un système.
(KO)본 발명은 다중 안테나 시스템인 미모(MIMO: Multiple Input Multiple Output) 시스템에 관한 것으로, 보다 상세하게는 방송 시스템과 같이 수신측으로부터 채널환경을 피드백(Feedback)받지 못하는 개루프 송신 상관 미모 페이딩 채널에서 의 성능열화를 방지할 수 있는 개루프 다중안테나 시스템에서 직교 복소 전치 부호화 장치 및 방법에 관한 것으로, 송신 상관계수가 최악인 경우를 가정하고 평균 수신신호 성능 열화를 방지할 수 있는 복소 최악의 채널환경을 고려한 프리코드로 분리된 송신신호를 프리코딩(또는 "전치 부호화"라 함)함으로써 수신기의 피드백 정보 없이도 채널에서 송신신호의 수신 성능 열화를 방지하고 이에 따른 시스템 오류 확률(PEP)을 낮출 수 있으며, 피드백 구조를 가지지 않으므로 시스템의 복잡도 및 오버헤드를 낮출 수 있는 효과를 제공한다.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Korean (KO)
Filing Language: Korean (KO)