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Paper detail

How Many Transmit Antennas to Use in a MIMO Interference Channel

The problem of finding the optimal number of data streams to transmit in a multi-user MIMO scenario, where both the transmitters and receivers are equipped with multiple antennas is considered. Without channel state information at any transmitter, with a zero-forcing receiver each user is shown to transmit a single data stream to maximize its own outage capacity in the presence of sufficient number of users. Transmitting a single data stream is also shown to be optimal in terms of maximizing the sum of the outage capacities in the presence of sufficient number of users.

preprint2011arXivOpen access
Rahul Vaze
math.ITInformation Theory
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Rahul Vaze

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