New algorithms for blind recognition of OFDM based systems
作者: Abdelaziz BouzegziPhilippe CiblatPierre Jallon
作者单位: 1CEA-LETI, MINATEC, Grenoble, France
2ENST, Paris, France
刊名: Signal Processing, 2009, Vol.90 (3), pp.900-913
来源数据库: Elsevier Journal
DOI: 10.1016/j.sigpro.2009.09.017
关键词: Cognitive radioBlind system recognitionOFDMCyclostationarityMaximum likelihoodKurtosis
英文摘要: Abstract(#br)In the context of cognitive radio or military applications, it is a crucial task to distinguish blindly various OFDM based systems (e.g., Wifi, Wimax, 3GPP/LTE, DVB-T) from each others. Existing OFDM based systems differ from their subcarrier spacing used in OFDM modulation. One can thus carry out recognition algorithms based on the value of the subcarrier spacing. Standard approaches developed in the literature rely on the detection of the cyclic prefix which enables to exhibit the value of the used subcarrier spacing. Nevertheless these approaches fail when either the cyclic prefix duration is small or the channel impulse response is almost as large as the cyclic prefix. Therefore we propose four new algorithms to estimate the parameters of OFDM modulated signal (especially...
全文获取路径: Elsevier  (合作)
影响因子:1.851 (2012)

  • recognition 识别
  • blind 暗的
  • based 基于
  • systems 系统科学与软件