METHOD AND ASSOCIATED DEVICE FOR MAINTAINING PRECODING CHANNEL COHERENCE IN COMMUNICATION NETWORK Russian patent published in 2013 - IPC H04B7/06 

FIELD: radio engineering, communication.

SUBSTANCE: during precoding, channel coherence and system capacity are taken into account. A base station adjusts phase and/or amplitude of a precoding matrix corresponding to each precoded unit to maintain coherence of associated information of the entire precoding channel. The associated information of the precoding channel includes, for example, channel status information (CSI) or eigenvalue matrix of the precoding channel. Further, a mobile terminal performs channel estimation based on reference signals of multiple precoded units, thereby eliminating the limitation in prior art that a mobile terminal can perform channel estimation only within one or more resource blocks limited by a precoding granularity.

EFFECT: high accuracy of precoding.

15 cl, 11 dwg