1. IEEE Standard (2006) Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access System; Amendment 2: Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands, IEEE Std 802.16e-2005. http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1603394&userType=inst .
2. 3GPP Standard (2009) Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 8), 3GPP TS 36.213 V8.8.0. http://www.etsi.org/deliver/etsi_ts/136300_136399/136304/08.08.00_60/ts_136304v080800p.pdf .
3. Morelli M., Jay Kuo C. C., Pun M. O. (2007) Synchronization techniques for orthogonal frequency division multiple access (OFDMA): A tutorial review. Proceedings of the IEEE 95: 1394–1427
4. Morelli M. (2004) Timing and frequency synchronization for the uplink of an OFDMA system. IEEE Transaction on Communication 45(2): 296–306
5. Zhao, P., Kuang, L., & Lu, J. (2006). Carrier frequency offset estimation using extended Kalman filter in uplink OFDMA systems. ICC ’06, June 2006, vol. 6, pp. 2870–2874.