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Geographically Segmented Localcasting in an SFN Environment With Local Content Insertion
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- Authors
- Yiyan Wu, Hao Ju, Xianbin Wang, Pablo Angueira, J. Montalbán, Namho Hur, Sungjun Ahn, Sung-Ik Park, Yin Xu, Dazhi He, Wenjun Zhang
- Issue Date
- 2026-06
- Citation
- IEEE Transactions on Broadcasting, v.72, no.2, pp.655-663
- ISSN
- 0018-9316
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- Delivering geographically segmented local content remains one of the key challenges in Single Frequency Networks (SFNs). By leveraging Layered Division Multiplexing (LDM), Local Content Insertion (LCI) can be achieved through Geographically Segmented Localcasting (GSL) for both multimedia and datacasting applications. This paper introduces a solution where region-wide broadcast services are carried by the Core Layer (CL) of the LDM, while local content is transmitted through the Enhancement Layer (EL). This approach also benefits network design and transmitter deployment, as new transmitters can be positioned freely within the intended broadcast service area. Each additional site enhances the reception quality of the regional component (LDM CL) while simultaneously delivering geographically specific multimedia and datacasting services to its local coverage zone. Since the localcasting signal on the EL operates at a lower transmission power, co-channel interference among local transmitters is minimized. A co-channel interference mitigation technique, Iterative Joint Detection and Decoding (IJDD), is also introduced. The paper outlines a roadmap for deploying LCI/GSL systems. Leveraging LDM enables any terrestrial television platform to adopt this approach in SFN or High-Power High-Tower (HPHT) configurations while remaining compatible with existing receivers. Furthermore, any cell-based wireless systems (5G/6G) can exploit this method, efficiently integrating broadcast, multicast, and unicast service delivery.
- Keyword
- SFN, LDM, localcast, P-MOMA, local content insertion (LCI), geographically segmented localcasting (GSL), co- channel interference mitigation
- KSP Keywords
- Broadcast service, Collaborative Optimization(CO), High Power, Layered division multiplexing, cell-based, co-channel interference(CCI), co-channel interference mitigation, enhancement layer, joint detection and decoding, mitigation techniques, network design