Abstract
It is conjectured that the covariance matrices minimizing the outage probability under a power constraint for multiple-input multiple-output channels with Gaussian fading are diagonal with either zeros or constant values on the diagonal. In the multiple-input single-output (MISO) setting, this is equivalent to conjecture that the Gaussian quadratic forms having largest tail probability correspond to such diagonal matrices. This paper provides a proof of the conjecture in this MISO setting.
| Original language | English (US) |
|---|---|
| Article number | 6413232 |
| Pages (from-to) | 2596-2602 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Information Theory |
| Volume | 59 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2013 |
All Science Journal Classification (ASJC) codes
- Information Systems
- Computer Science Applications
- Library and Information Sciences
Keywords
- Extremal probability
- Gaussian quadratic form
- MIMO
- MISO
- outage probability
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