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Multicast Coverage Prediction in OFDM-Based SFN
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 Title & Authors
Multicast Coverage Prediction in OFDM-Based SFN
Jung, Kyung-Goo; Park, Seung-Young;
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 Abstract
In 3rd generation project partnership long term evolution, wireless multicast techniques which send the same data to multiple users under single frequency networks have attracted much attention. In the multicast system, the transmission mode needs to be selected for efficient data transfer while satisfying the multicast coverage requirement. To achieve this, users' channel state information (CSI) should be available at the transmitter. However, it requires too much uplink feedback resource if all the users are allowed to transmit their CSI at all the time. To solve this problem, in this paper, the multicast coverage prediction is suggested. In the proposed algorithm, each user measures its transition probabilities between the success and the fail state of the decoding. Then, it periodically transmits its CSI to the basestation. Using these feedbacks, the basestation can predict the multicast coverage. From the simulation results, we demonstrate that the proposed scheme can predict the multicast system coverage.
 Keywords
multicast;single frequency network;SFN;OFDMA;coverage prediction;
 Language
Korean
 Cited by
 References
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