Channel characteristics study of shortwave communication with transmit narrow-beam

Yanli Li, Xiaohui Duan, Meng Ma, Bingli Jiao

Research output: Contribution to journalArticlepeer-review


The authors propose a method of using transmit narrow-beam to spatially concentrate the radiation energy on dominant path and suppress undesired paths in the shortwave communication. Based on the time-variant double layers & plane valley electron density profile, the theoretical analysis of narrow-beam channel characteristics is conducted. Under the mid-latitude mid-range communication, the calculations of channel parameters are taken for different number of transmit antennas at different time and the serving region size is calculated for certain narrow beam. Both the theoretical study and the calculation results show that the gain of the power ratio of dominant path to the others and the coherence bandwidth can be dramatically increased in the shortwave communication with narrow-beam.

Original languageEnglish
Pages (from-to)155-161
Number of pages7
JournalBeijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis
Issue number2
StatePublished - Mar 2010
Externally publishedYes


  • Coherence bandwidth
  • Gain of power ratio
  • Narrow-beam
  • Shortwave channel


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