Improving LTE ${e}$ MBMS With Extended OFDM Parameters and Layered-Division-Multiplexing
| Autor: | Khalil Salehian, Gordon Kent Walker, Wei Li, Liang Zhang, Adrian Florea, Yiyan Wu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry Orthogonal frequency-division multiplexing 020208 electrical & electronic engineering 020206 networking & telecommunications 02 engineering and technology Spectral efficiency Multimedia Broadcast Multicast Service Multiplexing Subcarrier Cyclic prefix Transmission (telecommunications) 0202 electrical engineering electronic engineering information engineering Media Technology Electronic engineering Digital television Electrical and Electronic Engineering business Computer network |
| Zdroj: | IEEE Transactions on Broadcasting. 63:32-47 |
| ISSN: | 1557-9611 0018-9316 |
| DOI: | 10.1109/tbc.2016.2630269 |
| Popis: | The evolved multimedia broadcast multicast service ( ${e}$ MBMS) system was developed to achieve higher spectrum efficiency on video traffic delivery over the long term evolution (LTE) networks. As an integrated component of the LTE, ${e}$ MBMS can be deployed with great flexibility using the existing LTE infrastructure. However, the current ${e}$ MBMS was designed as a supplementary subsystem, and has limited capability to deliver high-quality broadcast-type video services in a spectrum efficient manner. This paper first studies the capability and limitations of the current LTE ${e}$ MBMS system to deliver broadcast services when deployed as single-frequency-network (SFN). Next, potential physical-layer enhancements are investigated for future ${e}$ MBMS systems to achieve enhanced broadcast service delivery capability, higher spectrum efficiency, improved service quality, and more efficient SFN deployment options. These include wideband transmission, non-orthogonal multiplexing, e.g., layered-division-multiplexing technology, and more flexible orthogonal frequency division multiplexing system configurations, such as longer cyclic prefix and smaller subcarrier spacing. Other technologies defined in the latest next generation digital television system are also discussed that might be applicable to the development of a more capable standalone future ${e}$ MBMS system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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