Hyunsoo Ko

TL;DR: In this paper, a joint-coded rank indicator (RI) and a first wideband precoding matrix indicator (PMI) are used to perform effective feedback in a wireless communication system supporting multiple antennas.

TL;DR: In this paper, a method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs.

TL;DR: In this paper, the authors present a method for reporting channel state information by means of a terminal in a wireless communication system, the method comprising: a step of measuring a channel using at least one CSI-reference signal (CSI-RS indicated by at least a feedback type index from among a plurality of feedback type indices; and a step that generates channel information based on the channel measurement and reporting the CSI-RS information.

TL;DR: In this paper, a method for placing reference signals in a wireless communication system is described. But the method is not suitable for the use of wireless communication systems with multiple antennas and the reference signal for one sub-frame is not to overlap with the reference signals for another subframe.

TL;DR: In this paper, the authors proposed a method for allowing a terminal to transmit control information to a base station in a wireless communication system, and the method comprises receiving from said base station at least one physical downlink control channel (PDCCH) and one physical uplink shared channel (PDSCH) through at least a serving cell that is configured in said terminal.