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Optimized decision feedback equalizer and comparison with MLSE algorithm for GSM channel

Moshfegh, M ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1109/UKSIM.2011.98
  3. Publisher: 2011
  4. Abstract:
  5. In this paper, we present basic equation of efficient recursive least square algorithm based on GMSK modulation by linear superposition of amplitude modulated pulses for reduction complexity in equalizer. In this here, the DFE method be improved using of signal processing technique and soft decision which is called "generalized DFE or GDFEmethodquot;. We compare the performance and complexity GDFE with MLSE method for different channels used in GSM systems. The GDFE differs from the conventional DFE in its tap values and value of tap feedback filter related with channel length, which discussed in simulation result. Our simulation results, obtained for fading multi path channels, show that the GDFE scheme improves the performance 1 dB approximately in comparison with conventional DFE. The GDFE method is robust to errors channel and this is a good specific beside low complexity, which is applicable in practical systems
  6. Keywords:
  7. Equalizer ; Amplitude modulated ; Basic equations ; Channel length ; DFE ; Feedback filters ; GMSK modulation ; GSM ; GSM system ; Linear superpositions ; Low complexity ; MLSE ; Multipath channels ; Practical systems ; Recursive Least Square algorithm ; Signal processing technique ; Simulation result ; Soft decision ; Algorithms ; Computer simulation ; Fading channels ; Signal processing ; Decision feedback equalizers
  8. Source: Proceedings - 2011 UKSim 13th International Conference on Modelling and Simulation, UKSim 2011, 30 March 2011 through 1 April 2011, Cambridge ; 2011 , Pages 482-487 ; 9780769543765 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5754304