In this study, a new energy-efficient hybrid opportunistic cooperative (HOC) transmission protocol is proposed for single-carrier frequency division multiple access (SC-FDMA)-based cooperative networks. The author considers a single source–destination pair and multiple relays network. The proposed protocol improves the energy efficiency of SC-FDMAbased networks by selecting the most energy-effi...

This paper examines joint destination marketing in Vietnam, a transitional economy experiencing a rapid growth in tourism. Based on in-depth interviews with representatives of provincial destination marketing organizations (DMOs) and the analysis of their web-sites, the paper considers destination marketing by the eight provinces of the South Central Coast, the most dynamic tourism region in Vi...

Millimeter-wave (mmWave) communications are highly promising to improve the capacity of modern wireless networks, while physical layer security (PLS) techniques hold great potential enhance critical secrecy performance therein. By carefully exploiting significant signal difference between Non-Light-of-Sight (NLoS) and Line-of-Sight (LoS) mmWave links, this paper proposes a Sight-based Cooperati...

In this paper, we propose secure relaying transmission protocols using rateless codes, where a source sends encoded packets to two intended destinations via help of intermediate relays. Employing non-orthogonal multiple access, can be sent the at same time. addition, partial relay selection methods are studied enhance reliability data first and second hops. For protecting source-relay relay-des...

In resource limited, large scale underwater sensor networks, cooperative communication over multiple hops offers opportunities to save power. Intermediate nodes between source and destination act as cooperative relays. Herein, protocols coupled with space-time block code (STBC) strategies are proposed and analyzed for distributed cooperative communication. Amplify-and-forward type protocols are...

We investigate fundamental characteristics of cooperative transmission in terms of power efficiency. To do this, we first propose an optimal power allocation method for wireless cooperative networks with Rayleigh fading. By introducing the concept of “cooperative region”, we then evaluate the average power efficiency which is defined as the ratio of total consumed transmit power with cooperatio...