Journal of Electronics (China)

, Volume 24, Issue 1, pp 32–38 | Cite as

Efficient cyclic prefix reconstruction using decision feedback filter for coded single-carrier systems with frequency-domain equalization (SC-FDE)

  • Wei Shengqun 
  • Wu Qihui 
  • Wang Jinlong 
  • Wang Fan 
Article
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Abstract

In this paper, an efficient Cyclic Prefix (CP) reconstruction scheme is proposed for Single-Carrier systems with Frequency-Domain Equalization (SC-FDE) that employ insufficient length of CP at the transmitter. By utilizing a decision feedback filter to cancel the residual InterSymbol Interference (ISI) in the equalized signal, the proposed scheme can effectively lower the low bound of performance for the CP reconstruction schemes and can greatly improve the Bit Error Rate (BER) performance of SC-FDE systems. In addition, the existing methods and the proposed scheme are also optimized. It is shown in the simulation results that, when the Signal-to-Noise Ratio (SNR) exceeds a certain threshold, the proposed scheme can achieve the low bound of performance for the existing methods. Moreover, by increasing the number of iteration or through optimization, the low bound can be outperformed.

Key words

Cyclic Prefix (CP) reconstruction InterBlock Interference (IBI) InterSymbol Interference (ISI) Frequency-Domain Equalization (FDE) Decision feedback 

CLC index

TN929.5 
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Copyright information

© Science Press 2007

Authors and Affiliations

  • Wei Shengqun 
    • 1
  • Wu Qihui 
    • 1
  • Wang Jinlong 
    • 1
  • Wang Fan 
    • 1
    • 2
  1. 1.Postgraduate Team 4, Institute of Communication EngineeringPLA University of Science and TechnologyNanjingChina
  2. 2.Guangzhou Warzone Radio Regulatory OfficeGuangzhouChina

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