(19)
(11) EP 2 830 272 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
18.03.2015 Bulletin 2015/12

(43) Date of publication:
28.01.2015 Bulletin 2015/05

(21) Application number: 13778179.5

(22) Date of filing: 22.03.2013
(51) International Patent Classification (IPC): 
H04L 27/38(2006.01)
 H04L 27/34(2006.01)
(86) International application number:
PCT/CN2013/073073
(87) International publication number:
WO 2013/155917 (24.10.2013 Gazette 2013/43)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 17.04.2012 CN 201210112268

(71) Applicant: Huawei Technologies Co., Ltd.
Shenzhen, Guangdong 518129 (CN)

(72) Inventors:
  • DMITRI, Riabkov
    Shenzhen Guangdong 518129 (CN)
  • YAN, Xi
    Shenzhen Guangdong 518129 (CN)
  • WANG, Guangjian
    Shenzhen Guangdong 518129 (CN)

(74) Representative: Thun, Clemens 
Mitscherlich PartmbB Patent- und Rechtsanwälte Sonnenstraße 33
80331 München
80331 München (DE)

   


(54) SIGNAL DEMODULATION METHOD AND DEVICE


(57) The present invention provides a signal demodulation method and device. The method includes: obtaining a symbol probability parameter, where the symbol probability parameter comprises: an amplitude rj and a phase angle ϕy of a receive signal, an amplitude rxj and a phase angle ϕxj of each constellation point xj in a decision constellation point set, and a standard deviation σn of Gaussian noise and a standard deviation σθ of phase noise; calculating, according to the symbol probability parameter, a symbol probability that a transmit signal is each constellation point xj in the decision constellation point set; and performing demodulation according to the symbol probability, and outputting demodulation information. The present invention improves an anti-phase-noise capability.