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TDD Ratio Estimation Scheme for WiBro System with Flexible TDD Frame Structure
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- Authors
- Eu-Suk Shim, Young-Il Kim, Won Lyu
- Issue Date
- 2012-11
- Citation
- International Conference on Circuits, Control, Communication, Electricity, Electronics, Energy, System, Signal and Simulation (CES-CUBE) 2012, pp.1-6
- Language
- English
- Type
- Conference Paper
- Abstract
- Since TDD (time-division duplex) operation provides several benefits including the flexibility to partition downlink and uplink ratio, several communication systems (such as long term evolution (LTE), Mobile worldwide interoperability for microwave access (m-WiMAX) etc) are operated with TDD. In the any systems mentioned above, it is hard to change the TDD ratio directly because the TDD ratio is received as the form of MAC message. Hence, if system want to change the TDD ratio, there are at least 2-frames time is needed to reassign the TDD ratio and receive MAC message including the information of the TDD ratio. This paper suggests TDD ratio estimation scheme based on the modified m-WiMAX preamble is designed for the purposed of fast TDD ratio tracking. The simulation results show that the proposed method can provide fast tracking of TDD ratio.
- KSP Keywords
- Communication system, Frame structure, Long term Evolution(LTE), M-WiMAX, Time division duplexing(TDD), fast tracking, flexible TDD, simulation results, worldwide interoperability for microwave access(WiMAX)