Beamforming and Band Allocation for Satellite and High-Altitude Platforms Cognitive Systems

Dong Hyoun Na, Ki Hong Park, Young Chai Ko, Mohamed Slim Alouini

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In this letter, we consider a cognitive radio network consisting of broadcast satellite service (BSS), high-density fixed-satellite service (HDFSS), and high-altitude platforms (HAPs) systems. The spectrum utilization within a satellite beam coverage is increased by deploying extra HAPs in the pre-determined hot-spot regions to existing cognitive systems in which the BSS and HDFSS share frequency bands. Since the multiple network nodes simultaneously employ the same frequency band, there exists a challenge to efficiently mitigate the interference between them. Therefore, we propose an iterative precoding and band allocation algorithm for multi-antenna HAPs to maximize the network data rate. In addition, we present other low-complexity techniques and compare them through simulation results.

Original languageEnglish
Pages (from-to)2330-2334
Number of pages5
JournalIEEE Wireless Communications Letters
Issue number11
Publication statusPublished - 2022 Nov 1

Bibliographical note

Publisher Copyright:
© 2012 IEEE.


  • band allocation
  • beamforming
  • Cognitive systems
  • HAPs
  • satellite communications
  • sum-rate maximization

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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