中文

Journal of Applied Sciences ›› 2011, Vol. 29 ›› Issue (1): 27-32.doi: 10.3969/j.issn.0255-8297.2011.01.005

• Communication Engineering • Previous Articles     Next Articles

SIR Calculation for Fast Iterative ICI Cancellation in STBC Cooperative OFDM System

PENG Zhang-you1;2, LIU Yan-yan1;2, ZHANG Xing1;2   

  1. 1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
    2. Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University,
    Shanghai 200072, China
  • Received:2010-07-14 Revised:2010-10-25 Online:2011-01-26 Published:2011-01-25
  • About author:彭章友，博士，副教授，研究方向：宽带无线通信技术、通信信号处理，E-mail: zypeng@mail.shu.edu.cn

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Abstract:

 Based on the space time block coding (STBC) cooperative orthogonal frequency division multiplexing (OFDM) system, a method for calculating signal-to-interference ratio (SIR) is proposed to cancel inter-carrier interference (ICI) iteratively. By using the initial value of each iteration step instead of the transmitted signal, the method can calculate SIR of the received signal. For large frequency offset, a frequency compensation scheme is used. Error analysis and simulation results show that, when SIR is above 10 dB, difference between the SIR obtained with the proposed method and the theoretical results is below 10?2.

Key words:  space time block coding (STBC), orthogonal frequency division multiplexing (OFDM), intercarrier interference (ICI), signal-to-interference ratio (SIR)

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