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Journal of Applied Sciences >

2014 , Vol. 32 >Issue 1: 51 - 56

DOI: https://doi.org/10.3969/j.issn.0255-8297.2014.01.009

Signal and Information Processing

Design of Directional Modulation Signal Based on Multi-objective
Genetic Algorithm for Physical Layer Secure Communication

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  • 1. College of Telecommunications and Information Engineering, Nanjing University of
    Posts and Telecommunications, Nanjing 210003, China
    2. College of Electronic and Information Engineering, Nanjing University of Aeronautics and
    Astronautics, Nanjing 210016, China

Received date: 2011-09-06

  Revised date: 2011-12-12

  Online published: 2011-12-12

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Abstract

A directional modulation signal based on multi-objective genetic algorithm is proposed. According to the relationship between Euclidean distance of constellation points and bit error rate performance, the phase shift values are generated by means of optimizing multi-objective genetic algorithm to synthesize a directional modulation signal. This signal transmits different signal constellation at different directions. In the desired direction, the signal’s constellation is the same as the traditional baseband modulation signal while the constellation is scrambled in other directions. Compared with the traditional directional modulation signal, the proposed directional modulation signal has a narrower beam-width. Simulation results show that the technique
offer a better physical layer secure transmission signal for wireless communication.

Key words： directional modulation; RF modulation; physical layer secure communication; phased array; genetic algorithm

Cite this article

HONG Tao1, SONG Mao-zhong2, LIU Yu2 . Design of Directional Modulation Signal Based on Multi-objective
Genetic Algorithm for Physical Layer Secure Communication[J]. Journal of Applied Sciences, 2014 , 32(1) : 51 -56 . DOI: 10.3969/j.issn.0255-8297.2014.01.009

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