scholarly journals Transmission Capacity of Decode-and-Forward Cooperation in Overlaid Wireless Networks

2010 ◽  
Author(s):  
Z. Sheng ◽  
Z. Ding ◽  
K. K. Leung
Keyword(s):  
Wireless Networks ◽  
Transmission Capacity ◽  
Decode And Forward

scholarly journals Opportunistic Cooperative Channel Access in Distributed Wireless Networks With Decode-and-Forward Relays

2015 ◽  
Vol 19 (10) ◽  
pp. 1778-1781 ◽  
Author(s):  
Zhou Zhang ◽  
Shuai Zhou ◽  
Hai Jiang ◽  
Lei Dong
Keyword(s):  
Wireless Networks ◽  
Channel Access ◽  
Decode And Forward

Decode-and-Forward vs. Amplify-and-Forward Scheme in Physical Layer Security for Wireless Relay Beamforming Networks

2020 ◽  
Vol 10 (2) ◽  
pp. 9-17
Author(s):  
Tuan Nhu Nguyen
Keyword(s):  
Wireless Networks ◽  
Physical Layer Security ◽  
Secure Communication ◽  
Physical Layer ◽  
Cooperative Relaying ◽  
Transmission Model ◽  
Amplify And Forward ◽  
Decode And Forward ◽  
Encrypt Data ◽  
Cryptographic Algorithms

Abstract— To secure communication from the sender to the receiver in wireless networks, cryptographic algorithms are usually used to encrypt data at the upper layers of a multi-tiered transmission model. Another emerging trend in the security of data transmitted over wireless networks is the physical layer security based on beamforming and interference fading  communication technology and not using cryptographic algorithms. This trend has attracted increasing concerns from both academia and industry. This paper addresses how physical layer security can protect secret data compare with the traditional cryptographic encryption and which is the better cooperative relaying scheme with the state of the art approached methods in wireless relaying beamforming network.Tóm tắt— Việc bảo mật truyền thông vô tuyến từ nơi gửi đến nơi nhận thường sử dụng các thuật toán mật mã để mã hoá dữ liệu tại các tầng phía trên trong mô hình phân lớp. Một xu hướng khác đang được quan tâm rộng rãi là bảo mật tầng vật lý dựa trên kỹ thuật truyền tin beamforming và kỹ thuật tương tác fading kênh chủ động. Xu hướng này hiện đang được thu hút cả trong giới công nghiệp và nghiên cứu. Đóng góp của bài báo này là làm rõ khả năng bảo mật tầng vật lý và so sách chúng với phương pháp bảo mật dùng kỹ thuật mật mã truyền thống. Bài báo cũng so sánh hai kỹ thuật chuyển tiếp được sử dụng chính trong bảo mật tầng vật lý cho mạng vô tuyến chuyển tiếp là Amplify-and-Forward và Decode-and-Forward.

scholarly journals Research on Transmission Capacity Characteristics of the Cluster Flight Spacecraft Network

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Li Su ◽  
Jian Wu ◽  
Jinrong Mo
Keyword(s):  
Outage Probability ◽  
Random Variable ◽  
Mean Value ◽  
Transmission Capacity ◽  
Mean Value Theorem ◽  
Amplify And Forward ◽  
Decode And Forward ◽  
Different Types ◽  
The Mean ◽  
Capacity Performance

In order to analyze the transmission capacity performance of the cluster flight spacecraft network, there are two different types of outage performance theory which are derived in this paper. First of all, by applying the mean value theorem of integrals, the expression of the outage probability of decode-and-forward relaying is derived. Subsequently, according to the Macdonald random variable form, the expression of the outage probability of amplify-and-forward is derived. By simulating the transmission capacity of decode-and-forward, the transmission capacity characteristics of a single hop and dual hops are analyzed. The simulation results showed that transmission capacity performance changes with the change of the time slot in the orbital hyperperiod, and the transmission capacity of a dual-hop relay has better performance than a single-hop transmission in the cluster flight spacecraft network.

Sign in / Sign up

Export Citation Format

Share Document