This paper is a survey of transmit antenna selection-a low-complexity, energy-efficient method for improving physical layer security in multiple-input multiple-output wiretap channels. With this method, a single anten...This paper is a survey of transmit antenna selection-a low-complexity, energy-efficient method for improving physical layer security in multiple-input multiple-output wiretap channels. With this method, a single antenna out of multiple antennas is selected at the transmitter. We review a general analytical framework for analyzing exact and asymptotic secrecy of transmit antenna selection with receive maximal ratio combining, selection combining, or generalized selection combining. The analytical results prove that secrecy is significantly improved when the number of transmit antennas increases.展开更多
The co-channel interference(collisions) seriously affect the transmission for the newly deployed wireless sensor networks since there is no structure at that phase.In this paper,the interference of the whole network i...The co-channel interference(collisions) seriously affect the transmission for the newly deployed wireless sensor networks since there is no structure at that phase.In this paper,the interference of the whole network is analyzed based on the SNIR model.The new concept of critical transmitting range is proposed,based on which the transmission theorem is obtained and proved.The results provide the theoretical ground to set up the primary structure of newly deployed networks.展开更多
文摘This paper is a survey of transmit antenna selection-a low-complexity, energy-efficient method for improving physical layer security in multiple-input multiple-output wiretap channels. With this method, a single antenna out of multiple antennas is selected at the transmitter. We review a general analytical framework for analyzing exact and asymptotic secrecy of transmit antenna selection with receive maximal ratio combining, selection combining, or generalized selection combining. The analytical results prove that secrecy is significantly improved when the number of transmit antennas increases.
文摘The co-channel interference(collisions) seriously affect the transmission for the newly deployed wireless sensor networks since there is no structure at that phase.In this paper,the interference of the whole network is analyzed based on the SNIR model.The new concept of critical transmitting range is proposed,based on which the transmission theorem is obtained and proved.The results provide the theoretical ground to set up the primary structure of newly deployed networks.
