Advances in Coordinated Multi-Cell Multi-User MIMO Systems
Advances in Coordinated Multi-Cell Multi-User MIMO Systems
Advances in Coordinated Multi-Cell Multi-User MIMO Systems
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Two Issues on channel <strong>in</strong>formation accuracy<br />
• Can receive beamform<strong>in</strong>g ZF <strong>MIMO</strong> broadcast systems<br />
tolerate feedback channel variations?<br />
• Can receive beamform<strong>in</strong>g ZF <strong>MIMO</strong> broadcast systems<br />
channel estimation errors?<br />
H 1<br />
Receive<br />
Beamform<strong>in</strong>g<br />
Transmit<br />
Beamform<strong>in</strong>g<br />
channel estimation errors<br />
[γ 1 , γ 2 , … ]<br />
H K<br />
Receive<br />
Beamform<strong>in</strong>g<br />
[Wang’07] each entry of<br />
E k is distributed by<br />
feedback channel variations (Part I-1)
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