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1. WO2018016718 - APPARATUS AND METHOD FOR REDUCING PEAK TO AVERAGE POWER RATIO IN FILTER BANK MULTICARRIER SYSTEM

Publication Number WO/2018/016718
Publication Date 25.01.2018
International Application No. PCT/KR2017/003870
International Filing Date 10.04.2017
IPC
H04L 27/34 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18, or H04L27/26213
34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
H04L 27/36 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18, or H04L27/26213
34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
36Modulator circuits; Transmitter circuits
H04L 27/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
H04L 25/08 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
08Modifications for reducing interference; Modifications for reducing effects due to line faults
CPC
H04L 25/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
08Modifications for reducing interference; Modifications for reducing effects due to line faults ; ; Receiver end arrangements for detecting or overcoming line faults
H04L 27/2621
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2614Peak power aspects
2621Reduction thereof using phase offsets between subcarriers
H04L 27/2628
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2626Arrangements specific to the transmitter only
2627Modulators
2628Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
H04L 27/264
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2626Arrangements specific to the transmitter only
2627Modulators
264Pulse-shaped multi-carrier, i.e. not using rectangular window
H04L 27/3411
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
3405Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
3411reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
H04L 27/362
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
36Modulator circuits; Transmitter circuits
362Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
Applicants
  • 영남대학교 산학협력단 RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY [KR]/[KR]
Inventors
  • 최권휴 CHOI, Kwon Hue
  • 라동준 NA, Dong Jun
Agents
  • 두호특허법인 DOOHO IP LAW FIRM
Priority Data
10-2016-009225020.07.2016KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) APPARATUS AND METHOD FOR REDUCING PEAK TO AVERAGE POWER RATIO IN FILTER BANK MULTICARRIER SYSTEM
(FR) APPAREIL ET PROCÉDÉ PERMETTANT DE RÉDUIRE UN RAPPORT PUISSANCE CRÊTE/PUISSANCE MOYENNE DANS UN SYSTÈME MULTIPORTEUSE À BANC DE FILTRES
(KO) 필터뱅크 다중 반송파 시스템에서 첨두 대 평균전력 비를 감소시키기 위한 장치 및 방법
Abstract
(EN)
Disclosed are an apparatus and a method for reducing a peak to average power ratio (PAPR) in a filter bank multicarrier system. A transmission apparatus according to an embodiment of the present invention comprises: a discrete Fourier transform (DFT) unit for generating DFT-spread data symbols by performing an N-point (N is the number of subcarriers) DFT on parallel data symbols; a sign inversion unit for generating first data symbols by applying a first sign inversion rule to the DFT-spread data symbols, and generating second data symbols by applying a second sign inversion rule, which is different from the first sign inversion rule, to the DFT-spread data symbols; a modulation unit for generating a first transmission candidate signal and a second transmission candidate signal by modulating the first data symbols and the second data symbols according to a filter bank multicarrier (FBMC)/offset quadrature amplitude modulation (OQAM) scheme, respectively; and a selection unit for measuring a peak value or a peak to average power ratio (PAPR) of the first transmission candidate signal and the second transmission candidate signal, selecting a transmission signal having the smaller peak value or smaller PAPR among the first transmission candidate signal and the second transmission candidate signal, and transmitting the selected transmission signal.
(FR)
L'invention concerne un appareil et un procédé permettant de réduire un rapport puissance crête/puissance moyenne (PAPR) dans un système multiporteuse à banc de filtres. Un appareil de transmission selon un mode de réalisation de la présente invention comprend : une unité de transformée de Fourier discrète (DFT) pour générer des symboles de données à étalement DFT via l’exécution d’une DFT à N points (N étant le nombre de sous-porteuses) sur des symboles de données parallèles ; une unité d'inversion de signe pour générer des premiers symboles de données via l’application d’une première règle d'inversion de signe sur les symboles de données à étalement DFT, et générer des seconds symboles de données via l’application d'une seconde règle d'inversion de signe, qui est différente de la première règle d'inversion de signe, sur les symboles de données à étalement DFT ; une unité de modulation pour générer un premier signal de transmission candidat et un second signal de transmission candidat via la modulation des premiers symboles de données et des seconds symboles de données selon un schéma de modulation d'amplitude en quadrature à décalage (OQAM)/multiporteuse à banc de filtres (FBMC) respectivement ; et une unité de sélection pour mesurer une valeur de crête ou un rapport puissance crête/puissance moyenne (PAPR) du premier signal de transmission candidat et du second signal de transmission candidat, sélectionner un signal de transmission ayant la plus petite valeur de crête ou le plus petit PAPR entre le premier signal de transmission candidat et le second signal de transmission candidat, et transmettre le signal de transmission sélectionné.
(KO)
필터뱅크 다중 반송파 시스템에서 첨두 대 평균전력 비(Peak to Average Power Ratio, PAPR)를 감소시키기 위한 장치 및 방법이 개시된다. 본 발명의 일 실시예에 따른 송신 장치는, 병렬 데이터 심벌들에 대해 N(이때, N은 부반송파의 수)-포인트 DFT(Discrete Fourier Transform)를 수행하여 DFT 확산된 데이터 심벌들을 생성하는 DFT부, 상기 DFT 확산된 데이터 심벌들에 제1 부호 반전 규칙을 적용하여 제1 데이터 심벌들을 생성하고, 상기 DFT 확산된 데이터 심벌들에 상기 제1 부호 반전 규칙과 상이한 제2 부호 반전 규칙을 적용하여 제2 데이터 심벌들을 생성하는 부호 반전부, 상기 제1 데이터 심벌 및 상기 제2 데이터 심벌 각각을 FBMC(Filter Bank Multicarrier)/OQAM(Quadrature Amplitude Modulation) 방식으로 변조하여 제1 송신 후보 신호 및 제2 송신 후보 신호를 생성하는 변조부; 및 상기 제1 송신 후보 신호 및 상기 제2 송신 후보 신호에 대한 첨두치 또는 첨두 대 평균전력 비(PAPR)를 측정하고, 상기 제1 송신 후보 신호 및 상기 제2 송신 후보 신호 중 상기 첨두치 또는 상기 첨두 대 평균전력 비 (PAPR)가 작은 신호를 송신 신호로 선택하여 송신하는 선택부를 포함한다.
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