Power control in an LPI adaptive frequency-hopping system for HF communications
1997 (English)In: Proceedings of the 1997 7th International Conference on HF Radio Systems and Techniques: Nottingham, UK; 7 July 1997 through 10 July 1997, IEEE , 1997, 301-305 p.Conference paper (Refereed)
Frequency-hopping is considered to be an effective method for combating active jamming in military radio systems. To further improve the performance, so-called adaptive frequency-hopping (AFH), which uses an adaptively selected pool of the “best” hopping-frequencies for the communication, has been proposed. In this paper, we extend the adaptivity of the AFH scheme by adjusting the transmitted power on each channel individually. We investigate two novel power control algorithms; one that minimizes the initial bit error probability for every data frame, and one that aims at good LPI (low probability of intercept) properties by distributing the power so that all channels obtain the same signal-to-interference ratio (SSIR) at the receiver. Our analysis shows that the two power control algorithms give approximately equivalent communication performance. The resulting bit errors are mostly due to fast changes of the interfering signals which we cannot counteract with our relatively slow power control. Furthermore, the simulation results demonstrate the very good LPI capability of the SSIR algorithm.
Place, publisher, year, edition, pages
IEEE , 1997. 301-305 p.
, IEE Conference Publication, ISSN 0537-9989 ; 441
Computer and Information Science
Research subject SRA - ICT
IdentifiersURN: urn:nbn:se:kth:diva-28543DOI: 10.1049/cp:19970809ISBN: 0-85296-688-1OAI: oai:DiVA.org:kth-28543DiVA: diva2:387932
QC 201101172011-01-162011-01-162011-01-17Bibliographically approved