Achievable Rates of Secure Transmission in Gaussian MISO Channel with Imperfect Main Channel Estimation
Type
Conference PaperKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Date
2016-02-26Online Publication Date
2016-02-26Print Publication Date
2015-12Permanent link to this record
http://hdl.handle.net/10754/630003
Metadata
Show full item recordAbstract
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.Citation
Zhou X, Rezki Z, Alomair B, Alouini M-S (2015) Achievable Rates of Secure Transmission in Gaussian MISO Channel with Imperfect Main Channel Estimation. 2015 IEEE Globecom Workshops (GC Wkshps). Available: http://dx.doi.org/10.1109/GLOCOMW.2015.7414080.Conference/Event name
IEEE Globecom Workshops, GC Wkshps 2015Additional Links
http://ieeexplore.ieee.org/gateway/ipsSearch.jsp?an%3D7414080ae974a485f413a2113503eed53cd6c53
10.1109/GLOCOMW.2015.7414080