CODEBOOK DESIGN METHOD FOR MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM AND METHOD FOR USING THE CODEBOOK

CODEBOOK DESIGN METHOD FOR MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM AND METHOD FOR USING THE CODEBOOK

PURPOSE: A codebook design method for an MIMO(Multi-Input Multi-Output) system and a method for using the codebook are provided to use an optimized codebook, thereby accomplishing a high total data transfer rate. CONSTITUTION: A previously designed codebook is stored(S310). The state of a channel fo...

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Bibliographische Detailangaben
Hauptverfasser: KIM, KI LI, CLERCKX BRUNO, KIM, SUNG JIN, MAZZARESE DAVID
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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Zusammenfassung:PURPOSE: A codebook design method for an MIMO(Multi-Input Multi-Output) system and a method for using the codebook are provided to use an optimized codebook, thereby accomplishing a high total data transfer rate. CONSTITUTION: A previously designed codebook is stored(S310). The state of a channel formed between a BS(Base Station) and a user is recognized(S320). A transmission rank is adaptively decided(S330). According to an achievable total data transfer rate, the channel state of users, and desired data, the transmission rank is adaptively decided. Based on a plurality of matrixes included into the codebook, a precoding matrix is decided in consideration of channel information and the transmission rank(S340).