A mixed neural-genetic algorithm for the broadcast scheduling problem

  • Authors:
  • S. Salcedo-Sanz;C. Bousono-Calzon;A. R. Figueiras-Vidal

  • Affiliations:
  • Dept. of Signal Theor. & Commun., Univ. Carlos de Madrid, Leganes-Madrid, Spain;-;-

  • Venue:
  • IEEE Transactions on Wireless Communications
  • Year:
  • 2003

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Abstract

The broadcast scheduling problem (BSP) arises in frame design for packet radio networks (PRNs). The frame structure determines the main communication parameters: communication delay and throughput. The BSP is a combinatorial optimization problem which is known to be NP-hard. To solve it, we propose an algorithm with two main steps which naturally arise from the problem structure: the first one tackles the hardest contraints and the second one carries out the throughput optimization. This algorithm combines a Hopfield neural network for the constraints satisfaction and a genetic algorithm for achieving a maximal throughput. The algorithm performance is compared with that of existing algorithms in several benchmark cases; in all of them, our algorithm finds the optimum frame length and outperforms previous algorithms in the resulting throughput.