전자공학회논문지A (Journal of the Korean Institute of Telematics and Electronics A)
- 제31A권1호
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- Pages.9-16
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- 1994
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- 1016-135X(pISSN)
혼변조직 최소화를 위한 실제적인 주파수 배치 알고리듬의 제안
A Proposal of Practical Frequency Assignment Algorithm to Minimize IMPs
초록
In this paper, we propose a frequency assignment algorithm to minimize intermodulation effect which is caused by nonlinear amplipification of the satellite transponder. Allmost all of the published algorithms up to now are applicable to one-level SCPC systems, the application range of those algorithms is very restricted from the viewpoint of actual practice. In this paper, we develope and propose a new frequency assignment algorithm which utilize the basic concept of Okinaka's DELINS-INSDEL algorithm to extend its applicabilty from one-level SCPC systems to multi-level systems. The proposed TDTI algorithm provides considerable generality in reducing intermodulation effect in practical satellite communication systems because of its alpplicability to multi-level and multi-bandwidth systems as well as one-level systems. Besides the TDTI algorithm which shows excellent characteristics in performance but requires somewhat long excution time. the WTDI-SDELINS algorithm is proposed in this paper to compensate TDTI's demerits in excution time. Considering the fact that there are very little published sterategies for multi-level and muti-bandwidth systems. the algorithm proposed in this paper is quite meaningful.
키워드