The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON COMMUNICATIONS
Transactions ID Number: 28-329
Full Name: Gorazd Kandus
Position: Professor
Age: ON
Sex: Male
Address: Jamova cesta 39, SI-1000 Ljubljana
Country: SLOVENIA
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E-mail address: gorazd.kandus@ijs.si
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Title of the Paper: Adjacent Channel Interference Analyses in TETRA Direct Mode Operation
Authors as they appear in the Paper: Andrej Hrovat, Tomaz Javornik, Gorazd Kandus
Email addresses of all the authors: andrej.hrovat@ijs.si,tomaz.javornik@ijs.si,gorazd.kandus@ijs.si
Number of paper pages: 11
Abstract: The present paper analyzes adjacent channel interference in TETRA Direct Mode Operation (DMO) for indoor and outdoor environments. To determine minimal stay-away distance and interference area propagation model is used. Thus, a brief overview of free space, Bacon and CEPT SE21 propagation models, mentioned in the TETRA DMO standard is given and two-ray and multi-wall models are described and evaluated by field measurements. We found out, that the two-ray model is suitable for fast estimation of the TETRA DMO signal coverage in open flat area while the multi-wall model, taking into account the attenuation of walls between transmitter and receiver, gives good estimate of the signal levels for indoor applications. Those two models were used for the interference analyses. According to the calculated results two-ray model gives rather pessimistic values of the stay-away distance and interference area in open flat areas while multi-wall model is appropriate for the inter!
ference calculation inside buildings that are not surrounded with the high structures causing additional ray reflections back into the interior of the analyzed building
Keywords: interference, propagation, path loss, TETRA Direct Mode Operation, two-ray model, multi-wall model, radio signal coverage, stay-away distance
EXTENSION of the file: .pdf
Special (Invited) Session: Propagation Models for TETRA Direct Mode Operation
Organizer of the Session: 594-371
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