Reduced complexity optimum detector for Block Data Transmission Systems

DOI Web Site 被引用文献2件 参考文献6件
  • Babu SPK.
    School of Electrical and Electronic Engineering, Universiti Sains Malaysia
  • Salleh M. F. M.
    School of Electrical and Electronic Engineering, Universiti Sains Malaysia
  • Ghani Farid
    The School of Computer and Communication Engineering Universiti Malaysia Perlis

書誌事項

公開日
2009
DOI
  • 10.1587/elex.6.1649
公開者
一般社団法人 電子情報通信学会

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説明

Block Data Transmission Systems (BDTS) are used in high-speed wireless communication systems with time dispersive channel characteristics. In such systems, blocks of data are separated by zeros to mitigate the effect of Inter-Symbol-Interference (ISI) between the blocks. An optimal detection process employs the Maximum Likelihood Block Detection (MLBD) technique on each block individually in the presence of ISI and Gaussian noise based on the Euclidean distance as an objective function. The detection process is computationally expensive therefore Genetic Algorithms have been used to reduce the overall design complexity. In this work, three types of Genetic Algorithms have been incorporated in the detection process i.e. the conventional GA, Micro GA(µGA), and Hybrid µGA to reduce computational load. In particular, a novel training method for Hybrid µGA has been proposed. Simulation results at 10dB channel SNR for the BDTS with Hybrid µGA executes as low as 3,750 number of objective functions evaluation for a block size of 20. The Bit Error Rate (BER) performance of this system is relatively good i.e. around 1dB inferior to the BDTS using the Exhaustive Search method that requires as many as 220 number of objective functions evaluation.

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