Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2017, Vol. 40 ›› Issue (6): 86-91.doi: 10.13190/j.jbupt.2016-192

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Pre-Coding Design of Asynchronous Interference Suppression for Multi-Base Station Cooperative

XIAO Hai-lin1,2, WANG Ru2, YAN Xiao-juan2, JIANG Wei2   

  1. 1. College of Physics and Electronic Information Engineering, Wenzhou University, Zhejing Wenzhou 325035, China;
    2. Key Laboratory of Cognitive Radio and Information Processing(Guilin University of Electronic Technology), Ministry of Education, Guangxi Guilin 541004, China
  • Received:2016-08-22 Online:2017-12-28 Published:2017-12-28
  • Supported by:
     

Abstract: In multi-base station cooperative systems, the distances are different between the base stations and the users which will result in asynchronous interference of users received signals. To suppress asynchronous interference, a pre-coding design for muti-base station cooperative communication is proposed based on particle swarm optimization algorithm. The pre-coding design converts the pre-coding matrixes into the position parameters matrixes of the optimization particle, updates the optimization position parameters by intelligent learning among the particles, and adjusts the fitness function to maximize the signal to interference plus noise ratio of user. Thus, the pre-coding design can be used to suppress asynchronous interference of users received signals. Numerical simulations show that, compared with the improved block diagonalization algorithm, the proposed algorithm the proposed algorithm will increase the sum rate of system 2~7 bit/s with a good convergence.

Key words: multi-base station cooperative, asynchronous interference, particle swarm optimization algorithm, pre-coding, block diagonalization

CLC Number: