Results 71 to 80 of about 3,430 (173)

Leveraging on the Impact of Imperfect Channel Estimation for MIMO Relaying Systems

IEEE Access, 2019
In this paper, we study a multi-user multiple-input multiple-output (MIMO) dual-hop wireless relaying system, where the decode-and-forward protocol is applied at the intermediate relay node. The well-known MIMO spatial multiplexing technique is employed,
Nikolaos I. Miridakis, Theodoros A. Tsiftsis, Guanghua Yang   +2 more
doaj   +1 more source

Relay location optimization for full-duplex decode-and-forward relaying

, 2013
In this paper, we investigate the optimum relay location for full-duplex decode-and-forward (DF) relaying systems. The outage probability is adopted as the optimization criterion and a relay location optimization problem is formulated.
Cao, Rui, Liuqing Yang, Yang, Liuqing, Xiang Cheng, Yu, Bo, Bo Yu, Rui Cao, Cheng, Xiang   +7 more
core   +1 more source

Turbo-coded decode-and-forward strategy resilient to relay errors

, 2008
Cooperation in wireless systems can achieve spatial diversity gains as well as coverage enhancement. In the usual decode-and-forward (DF) strategy, a relay cooperates only when it can decode successfully the signal received from the source.
Louveaux, Jérôme, ICASSP 2008. IEEE International Conference on Acoustic, Speech and Signal Processes, Sneessens, H.H., Vandendorpe, Luc   +3 more
core  

Outage performances for amplify-and-forward, decode-and-forward and cooperative jamming strategies for the wiretap channel

, 2011
In this paper, we investigate the wiretap channel in the presence of a cooperative relay node. We analyze and compare the outage performance of three cooperatives schemes: cooperative jamming (CJ), decode-and-forward (DF), and amplify-and-forward (AF ...
Gabry, Frederic,, Frederic Gabry, Mikael Skoglund, Ragnar Thobaben, Thobaben, Ragnar,, Skoglund, Mikael,   +5 more
core   +1 more source

Maximum Likelihood Channel Estimation in Decode-and-Forward Relay Networks [PDF]

, 2008
In this paper, we provide a complete study on the training based channel estimation for relay networks that employ the decode-and-forward (DF) scheme. Since multiple relay nodes are geographically distributed over the service region, channel estimation ...
Tao Cui, Gao, Feifei, Arumugam Nallanathan, Cui, Tao, Feifei Gao, Nallanathan, Arumugam   +5 more
core   +1 more source

Massive MIMO for Full-Duplex Cellular Two-Way Relay Network: A Spectral Efficiency Study

IEEE Access, 2017
This paper presents the new analysis of the applications of massive multiple-input-multiple-output (MIMO) in full-duplex (FD) cellular two-way relay networks, and sheds valuable insights on the interactions between massive MIMO, and relay and duplex ...
Zhaoxi Fang, Wei Ni, Feng Liang, Pengfei Shao, Yaohui Wu   +4 more
doaj   +1 more source

Cognitive Multiuser Energy Harvesting Decode-and-Forward Relaying System With Direct Links

IEEE Access, 2018
In this paper, we study an underlay cognitive energy harvesting decode-and-forward (DF) relaying communications system with multiple secondary users (SUs) and a primary destination.
Dongqing Xie, Xiazhi Lai, Xianfu Lei, Lisheng Fan   +3 more
doaj   +1 more source

Wireless Energy Harvesting Two-Way Relay Networks with Hardware Impairments

Sensors, 2017
This paper considers a wireless energy harvesting two-way relay (TWR) network where the relay has energy-harvesting abilities and the effects of practical hardware impairments are taken into consideration.
Chunling Peng, Fangwei Li, Huaping Liu
doaj   +1 more source

Outage Probability Analysis of Dual-Hop Decode-and-Forward Relaying Over Mixed Rayleigh and Generalized Gamma Fading Channels

, 2013
In this letter, outage probability of dual-hop decode-and-forward (DF) relaying scheme is analyzed over mixed Rayleigh and generalized Gamma fading channels. Cooperation model considered in this work consists of a source, a relay and a destination. It is
DEVELİ, Ibrahim, BİLİM, Mehmet, KAPUCU, Nuri   +2 more
core   +1 more source

Cooperative Relay in Cognitive Radio Networks: Decode-and-Forward or Amplify-and-Forward

, 2010
—Cognitive radios (CR) and cooperative communica-tions represent new paradigms that both can effectively improve the spectrum efficiency of future wireless networks.
Shiwen Mao, Donglin Hu
core   +1 more source