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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zhou, Xinyu Rezki, Zouheir Alomair, Basel Alouini, Mohamed-Slim |
| Copyright Year | 2015 |
| Abstract | A Gaussian multiple-input single-output (MISO) fading channel is considered. We assume that the transmitter, in addition to the statistics of all channel gains, is aware instantaneously of a noisy version of the channel to the legitimate receiver. On the other hand, the legitimate receiver is aware instantaneously of its channel to the transmitter, whereas the eavesdropper instantaneously knows all channel gains. We evaluate an achievable rate using a Gaussian input without indexing an auxiliary random variable. A sufficient condition for beamforming to be optimal is provided. When the number of transmit antennas is large, beamforming also turns out to be optimal. In this case, the maximum achievable rate can be expressed in a simple closed form and scales with the logarithm of the number of transmit antennas. Furthermore, in the case when a noisy estimate of the eavesdropper's channel is also available at the transmitter, we introduce the SNR difference and the SNR ratio criterions and derive the related optimal transmission strategies and the corresponding achievable rates. |
| Starting Page | 1 |
| Ending Page | 6 |
| File Size | 142080 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781467395267 |
| DOI | 10.1109/GLOCOMW.2015.7414080 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-12-06 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Array signal processing Transmitting antennas Channel estimation Receivers Noise measurement Signal to noise ratio |
| Content Type | Text |
| Resource Type | Article |
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