Abstract
PURPOSE: A method for transmitting reference signals in a downlink multiple input multiple output system is provided to efficiently transmit a pilot symbol to both a user device of an existing system and a newly added user device. CONSTITUTION: A base station groups a fixed number of sub frames or resource blocks to transmit a common reference signal for M transmission antennas. The base station transmits the sub frames or resource blocks to the second user device at a specific period. A common reference signal corresponding to a different transmission antenna port is mapped in each of the sub frames or resources blocks.
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| Not Available | 22/10/2012 | ISLD-201209-014 | LG | Yes | Basis Patent | ||||
| 4G | 30/09/2014 | ISLD-201410-002 | LG | Yes | Basis Patent | ||||
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| EP2395677B1 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
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