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OFDM blind signal detection based on the probability-enhanced genetic algorithm

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3 Author(s)
Fang Chengzhi ; Coll. of Electron. Sci. & Eng., Nanjing Univ. of Posts & Telecommun., Nanjing, China ; Huang Liya ; Zhang Ying

In recent years the quadratic program (QP) is applied for the blind signal detection of the time-varying OFDM systems. The minimum solution of the QP is obtained by means of exhaustive search in the vector space, which often involves large and nondeterministic complexity. In this paper, we derive some formulas describing the probability information about the received PSK-type signals. With these formulas, a novel genetic algorithm (GA) based method is proposed. Different from other approaches, this method includes a new selection and mutation strategy, ensuring the near-optimal solution can be found with least complexity. The simulations prove the effectiveness of the new method.

Published in:

Electric Information and Control Engineering (ICEICE), 2011 International Conference on

Date of Conference:

15-17 April 2011