FIELD: radio engineering, communication.
SUBSTANCE: coherence areas in wireless channels are used in multi-user system (MU) with multiple antennas (MAS) to form a plurality of non-interfering data streams for different users. In one embodiment, non-linear or linear precoding is used to form separate coherence areas for different users. As an example, non-linear precoding may comprise coding of "Dirty Paper" (DPC) type or Tomlinson-Harashima precoding, and linear precoding may comprise block diagonalization (BD) or beamforming with Zero-Mutual Interference (ZF-BF) forced installation. The closed-loop technology can also be used to transmit channel state information (CSI) from a variety of users in MU-MAS.
EFFECT: improving the quality of connection and increasing the data transfer rate by forming a set of non-interfering spatial channels for each user.
34 cl, 58 dwg
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