Özbek, BernaÖzdoğan, ÖzgecanKarabulut Kurt, Güneş2017-06-142017-06-142016Özbek, B., Özdoğan, Ö., and Karabulut Kurt, G. (2016,September 4-8). Secure multiuser MISO communication systems with quantized feedback. Paper presented at the 27th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications. doi:10.1109/PIMRC.2016.77945619781509032549http://doi.org/10.1109/PIMRC.2016.7794561https://hdl.handle.net/11147/576927th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2016; Valencia; Spain; 4 September 2016 through 8 September 2016Physical layer security is a promising approach to provide secure communications by considering the characteristics of wireless channels. In this work, we propose a secure multiple input single output (MISO) multiuser system with a quantized feedback link. We assume that eavesdropper is passive and its channel state information (CSI) is not available at transmitter. In order to disrupt reception of a passive eavesdropper, we schedule more than one legitimate user. For the sake of ensuring secure communication, the CSI of legitimate users has great impact on overall performance of secrecy sum capacity. The proposed solution applies a semi-orthogonal selection with a specific codebook to reduce the quantization errors for legitimate user side while disrupting the reception of the eavesdropper. The proposed solution improved secrecy sum capacity while reducing the feedback overhead for secure MISO multiser system.eninfo:eu-repo/semantics/openAccessRadio communicationChannel state informationNetwork layersSecure communicationsConference Object2-s2.0-8501005132610.1109/PIMRC.2016.7794561