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1. (WO2011139002) DIGITAL PRE-DISTORTION DEVICE AND METHOD FOR A BROADBAND POWER AMPLIFIER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2011/139002    International Application No.:    PCT/KR2010/003951
Publication Date: 10.11.2011 International Filing Date: 18.06.2010
IPC:
H04W 16/10 (2009.01), H04W 16/14 (2009.01)
Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY [KR/KR]; 373-1 Guseong-dong Yuseong-gu Daejon 305-701 (KR) (For All Designated States Except US).
LEE, Yong Hoon [KR/KR]; (KR) (For US Only).
CHOI, Sung Ho [KR/KR]; (KR) (For US Only).
JEONG, Eui Rim [KR/KR]; (KR) (For US Only)
Inventors: LEE, Yong Hoon; (KR).
CHOI, Sung Ho; (KR).
JEONG, Eui Rim; (KR)
Agent: LEE, Un Cheol; 5T International Patent Law Firm 11F., Yeosam Bldg., 648-23 Yeoksam-dong Gangnam-gu Seoul 135-080 (KR)
Priority Data:
10-2010-0041263 03.05.2010 KR
Title (EN) DIGITAL PRE-DISTORTION DEVICE AND METHOD FOR A BROADBAND POWER AMPLIFIER
(FR) DISPOSITIF NUMÉRIQUE ET PROCÉDÉ DE PRÉ-DISTORSION POUR AMPLIFICATEUR DE PUISSANCE À LARGE BANDE
(KO) 광대역 전력 증폭기를 위한 디지털 전치왜곡 장치 및 그 방법
Abstract: front page image
(EN)According to the present invention, a digital pre-distortion device and method for use in a dynamic spectrum allocation system, which uses a broadband frequency range, such as a cognitive radio (CR) system, are implemented. Also, while a conventional pre-distortion device only enable the linearization of a signal of a fundamental frequency band, the digital pre-distortion device and method according to the present invention enable not only the linearization of a basic signal on frequency fc, but also simultaneously enable the elimination of harmonic signals on the high frequencies of 2fc, 3fc, 4fc, etc. The digital pre-distortion device for a broadband power amplifier according to a preferred embodiment of the present invention comprises: a nonlinear power amplifier; an equivalent amplifier model estimator; N pre-distorters; and a coefficient extractor for extracting the coefficients of the N pre-distorters.
(FR)La présente invention concerne un dispositif numérique et procédé de pré-distorsion destinés à être utilisé dans un système d'allocation dynamique de spectre utilisant une gamme de fréquence à large bande, comme un système de radio cognitive (CR). En outre, alors qu'un dispositif conventionnel de pré-distorsion ne permet que la linéarisation d'un signal d'une bande de fréquence fondamentale, le dispositif numérique et le procédé de pré-distorsion selon la présente invention permettent non seulement la linéarisation d'un signal fondamental de fréquence fc, mais permettent également et simultanément l'élimination des signaux harmoniques de hautes fréquences à 2fc, 3fc, 4fc, etc. Le dispositif numérique de pré-distorsion pour amplificateur de puissance à large bande selon un mode de réalisation préféré de la présente invention comporte : un amplificateur de puissance (AP) non linéaire ; un estimateur de modèle d'amplificateur équivalent ; N pré-distorteurs ; et un extracteur de coefficients servant à extraire les coefficients des N pré-distorteurs.
(KO)본 발명은 인지통신(Cognitive Radio, CR) 시스템과 같이 광대역 주파수 범위를 활용하는 동적 스펙트럼 할당 시스템에서 동작하는 디지털 전치왜곡 장치 및 그 방법을 구현할 수 있도록 한다. 또한, 기존 전치왜곡 장치는 기본(fundamental) 주파수 대역의 신호만 선형화하는데 목적을 가진 반면, 본 발명은 주파수 f c 위치의 기본 신호의 선형화뿐만 아니라, 2f c, 3f c, 4f c, …의 고주파수 위치에서 발생하는 고조파 신호의 제거를 동시에 수행하는 디지털 전치왜곡 장치 및 그 방법을 구현하는 것에도 그 목적이 있다. 본 발명의 바람직한 일실시예에 따른 광대역 전력 증폭기를 위한 디지털 전치왜곡 장치는, 비선형 전력 증폭기; 등가 증폭기 모델 추정기; N개의 전치왜곡기; 및 N개의 전치왜곡기의 계수를 추출하는 계수 추출기;를 포함한다.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, 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, PE, PG, PH, PL, PT, RO, RS, RU, 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, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, 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, 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)