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A Generalized Frequency Assignment Algorithm to Reduce Intermodulation Products in Satellite Communications

Sunghyun HWANG, Sungchan KO, Hyungjin CHOI

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Summary :

In this paper, we propose a generalized frequency assignment algorithm to minimize the intermodulation products caused by nonlinear amplification in satellite transponder. We also analyze the performance of proposed algorithms in terms of C/IM and execution time. Most of the published algorithms are too restrictive to be applied to the frequency planning of many realistic systems that are usually characterized by multi-level and/or multi-bandwidth. In developing the proposed "TDTI algorithm," we utilized and modified basic concepts of Okinaka's DELINS-INSDEL algorithm to extend its applicability from one-level systems to more general systems. We also propose a modified version of TDTI algorithm called "WTDI-SDELINS" to circumvent the problem of relatively long execution time.

Publication
IEICE TRANSACTIONS on Communications Vol.E84-B No.3 pp.614-622
Publication Date
2001/03/01
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Satellite and Space Communications

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