Recently, a promising approach towards achieving secure communications has been developed by Wyner in [4] termed as physical layer security, the key idea of which lies in exploiting the randomness of wireless channels to ensure the security of confidential information.
"When you're dealing with an economic crisis, it's hard to achieve elegant communications," said David Axelrod, Mr. Obama's top strategist.
If you've already done something similar, place it prominently and give details of what you learned or achieved: Marketing communications assistant (June 2013) Revised and polished promotional literature for Oxford Arts Festival Highlight any instances when previous employers or supervisors were impressed by you: "Rehired three consecutive summers to help visitors at literature festival".
Recently, symmetric key predistribution schemes [7 9] have been proposed to achieve secure communications in WSNs.
Recently established standards such as IEEE 802.11p and IEEE 1609 help achieve effective communications between vehicles and the infrastructure.
This redundancy allows the receiver to combat the detrimental effects of the channel and, hence, achieve reliable communications in spite of these effects.
"We are committed to preserving the enormously successful mobile broadband industry in the U.S. and to protecting and advancing the significant gains that have already been achieved in communications, disaster preparedness and emergency response.
To achieve green communications, one way is designing energy-efficient systems to achieve high energy efficiency (EE) [8], and the other way is designing energy-saving systems to consume as less power as possible to meet system requirements [9].
There are three important requirements in the sensing process; the first is to keep the probability of detection (Pd) of the LTE signal as high as possible, in order to achieve reliable communications for the primary user.
In the proposed protocol, better outage performance of the primary users is achieved, and communications of the secondary users without a direct link are realized under the assistance of a decode-and-forward relay.
