Method and apparatus for scheduling multiple users in a...

Details Method and apparatus for scheduling multiple users in a... Method and apparatus for scheduling multiple users in a...

2004-04-23

2008-12-09

Harper, Vincent P. (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C375S285000, C375S267000, C375S347000

Reexamination Certificate

active

07463601

ABSTRACT:
Disclosed herein is a scheduling method and apparatus based on eigen values robust against spatial correlation in a mobile communication system supporting multiple users by use of multiple transmit/receive antennas. A user terminal estimates channel characteristics from the transmit antennas to the user terminal, decomposes the estimated channel characteristics into receive channel characteristics and transmit channel characteristics, and feeds back a transmit principal eigen vector to the base station (BS). The BS selects a predetermined number of user terminals having the least correlation using the feedback principal eigen vectors from a plurality of user terminals, constructs a user precoding matrix by combining the principal eigen vectors of the selected user terminals, multiplies data streams for the selected user terminals by the user precoding matrix and transmits the multiplied data to the selected user terminals.

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