Approach to Parameters Estimation and Signal Detection for OFDMA Uplink Based on PN Sequence

IEEE 802.16-2001 Air Interface for Fixed BroadbandWireless Access Systems，IEEE 802.16-2004 Medium AccessControl Modifications and Additional Physical LayerSpecifications for 2-11 GHz.[2]Coleri S, Ergen M, Puri A, and Bahai A. Channel estimationtechniques based on pilot arrangement in OFDM systems [J],IEEE Trans[J].on Broadcasting.2002, 48(3):223-229[3]Kim Y H, Hahm Y K, and Jung H J. An efficient frequencyoffset estimator for timing and frequency synchronization inOFDM systems [A]. IEEE Pacific Rim Conference onCommunications, Computer and Signal Processing, Victoria,BC, Canada, 22-24 Aug 1999: 580-583.[4]Van de Beek J J, Sandell M, and Borjesson P O. MLestimation of time and frequency offset in OFDM systems [J].IEEE Trans. on Signal Processing.1997, 45(7):1800-1805[5]Chen Biao. ML estimation of OFDM carrier frequency offset[J].IEEE Signal Processing Letters.2002, 9(4):123-126[6]Kimura R, Funada R, and Harada H. Performance evaluationof time alignment control under high-mobility environmentfor dynamic parameter controlled OF/TDMA[J]. IEICETrans. on Communication, 2005, E88-B(2): 541-551.[7]Van de Beek J J, Borjesson P O, Boucheret M L, LandstromD, Arenas J M, Odling P, Ostberg C, Wahlqvist M, andWilson S K. A time and frequency synchronization scheme formultiuser OFDM[J].IEEE J. Sel. Areas Commun.1999, 17(11):1900-1914