Equalization digital on-channel repeater in the single frequency networks

• Published in: IEEE transactions on broadcasting Vol. 52; no. 2; pp. 137 - 146
• Main Authors: Kim, S.W., Lee, Y.T., Park, S.I., Eum, H.M., Seo, J.H., Kim, H.M.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.06.2006; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Costs; Defects; Delay; Delay effects; Delay systems; Digital; Digital TV; DOCR; Equalization; Exact sciences and technology; Filters; Frequency synchronization; Networks; Radio frequency; Radio transmitters; Radiocommunications; Repeaters; SFN; Signal processing; Telecommunications; Telecommunications and information theory; Transmitters; Transmitters. Receivers; Single frequency network; Transmitter; Processing time; Output signal; Delay system; Equalization; Field experiment; Signal processing; Repeater; Delay time; DOCR; SFN; Sideband; Cost lowering; Delayed time
• ISSN: 0018-9316; 1557-9611
• DOI: 10.1109/TBC.2006.875651

Digital On-Channel Repeater (DOCR) can be used for Single Frequency Networks (SFN's). It is much simple and low cost compared to Distributed Transmitter which needs Studio to Transmitter Link (STL). However, traditional DOCR has one of those defects such as a power limit, a long time system processing delay or a poor output signal quality. In order to overcome all of those defects, we introduce Equalization DOCR (EDOCR) which regenerates the original 8-VSB output signal with relatively short time system processing delay. Lab. and Field test results show that the EDOCR can eliminate the loop-back signal up to 5.5 dB with 5.5 /spl mu/s system processing delay. By using EDOCR, we can save spectrum resources and extend coverage areas.