Method and system for an improved user group selection scheme with finite-rate channel state information feedback for fdd multiuser mimo downlink transmission

A machine-readable storage having stored thereon, a computer program having at least one code section for communication, the at least one code section being executable by a machine for causing the machine to perform steps comprising:

• selecting, from a plurality of signal receiving users in a multiuser communication system, a first signal receiving user having a channel gain that is greater than a channel gain of each corresponding signal receiving user of a remaining portion of said plurality of signal receiving users;
• and
• selecting a second signal receiving user from said remaining portion of said plurality of signal receiving users, based on a feedback information comprising orthogonality of a channel direction of said second signal receiving user with respect to a channel direction of said first user.

A system for communication, the system comprising:

• one or more circuits that enables selecting, from a plurality of signal receiving users in a multiuser communication system, a first signal receiving user having a channel gain that is greater than a channel gain of each corresponding signal receiving user of a remaining portion of said plurality of signal receiving users;
• and
• said one or more circuits enables selecting a second signal receiving user from said remaining portion of said plurality of signal receiving users, based on a feedback information comprising orthogonality of a channel direction of said second signal receiving user with respect to a channel direction of said first user.