Noise-nulling superimposed pilots based channel estimation for OFDM modulated amplify-and-forward relay networks

被引：0
作者：
Li, Congying [1 ]
Dou, Gaoqi [1 ]
Gao, Jun [1 ]
机构：
[1] Department of Communication Engineering, Naval University of Engineering, Wuhan
来源：
Journal of Computational Information Systems | 2015年 / 11卷 / 14期
关键词：
Amplify-and Forward Relay Networks; Corresponding author; Noise-nulling Superimposed Pilots; OFDM;
D O I：
10.12733/jcis14782
中图分类号：
学科分类号：
摘要：
In this letter, a novel noise-nulling superimposed pilots (NNSP) scheme for OFDM modulated Amplify- and-Forward relay networks is proposed, and a method to design superimposed training sequences is presented to estimate the channel of relay→destination link. By nulling the noising before superimposed pilots at the relay, the interference noise, introduced by the source → relay link, to the relay training sequences can be eliminated. Besides, the superimposed pilots designed here have perfect Peak-to- Average Ratio (PAR) performance and can to be applied in OFDM systems. Simulation results show that the NNSP yield better MSE performance than that without noise elimination. ©, 2015, Journal of Computational Information Systems. All right reserved.
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页码：5267 / 5275
页数：8
相关论文
共 11 条
  • [1] Cover T., Gamal A.E., Capacity theorems for the relay channel, J. IEEE Trans. Inf. Theory, IT-25, 5, pp. 572-584, (1979)
  • [2] Laneman J.N., Wornell G.W., Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks, J. IEEE Trans. Inf. Theory, 49, 10, pp. 2415-2425, (2003)
  • [3] Sendonaris A., Erkip E., Aazhang B., Increasing uplink capacity via user cooperation diversity, J. in Proc. IEEE ISIT, Cambridge, MA, Aug, (1998)
  • [4] Sendonaris A., Erkip E., Aazhang B., User cooperation diversity part I: system description, J. IEEE Trans. Commun, 51, 11, pp. 1927-1938, (2003)
  • [5] Nabar R.U., Bolcskei H., Kneubuhler F.W., Fading relay channels: performance limits and space-time signal design, J. IEEE J. Select. Areas Commun, 22, 6, pp. 1099-1109, (2004)
  • [6] Guo X., Ma W., Guo Z., Shen X., Hou Z., Adaptive resource reuse scheduling for multihop relay wireless network based on multicoloring, J. IEEE Commun. Lett, 12, 3, pp. 176-178, (2008)
  • [7] Gao F.F., Jiang B., Gao X.Q., Zhang X.D., Superimposed training based channel estimation for OFDM modulated amplify-and-forward relay networks, J. IEEE Transactions on communications, 59, pp. 2029-2039, (2011)
  • [8] Abdallah S., Psaromiligkos I.B., Semi-blind channel estimation with superimposed training for OFDM-based AF two-way relaying, J. IEEE Transactions on Wireless Communications, 13, pp. 2468-2477, (2014)
  • [9] Suehiro N., A signal design without co-channel interference for approximately synchronized CDMA systems, J. IEEE Journal on Selected areas in Communications, 12, pp. 837-841, (1994)
  • [10] Suehiro N., Hatori M., Polyphase periodic sequences without crosscorrelation and their application to asynchronous SSMA systems, J. IEICE Trans. Commun, J68-A, (1985)
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