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A Study on Transmission Quality and Frequency Movement for Digital Microwave Link Design  

서경환 (강남대학교 지식정보공학부 전자공학과)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.14, no.5, 2003 , pp. 489-498 More about this Journal
Abstract
Recently to introduce new services of ultra-high speed wireless access and systems beyond the 3rd generation mobile communication, 5 GHz band has been highly interested. As a way of getting the required frequency, it is considered that microwave relay bands below 6 GHz, which shows a slow decrease in demand and less cost-effectiveness, should be moved to other bands above 6 GHz. In this paper, as a tool for analyzing microwave link design and its service quality, the outage prediction based upon Vigants & Barnett＇s model is reviewed. To show outage and availability calculation, simulations are performed for the operating 4 GHz radio sites, and some results and features regarding frequency movement to 6.7 as well as 8 GHz are also discussed in terms of diversity techniques, bit error rate, and availability As the results, it is confirmed that only the diversity techniques of space or space and frequency can satisfy the annual objective of availability irrespective of frequency movement.
Keywords
Digital Microwave Relay System; Dispersive Fade Margin; Outage Time; Availability; Space and Frequency Diversity Techniques;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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