Results 81 to 90 of about 140,869 (184)

Random DS/CDMA for the amplify and forward relay channel

IEEE Transactions on Wireless Communications, 2009
This paper presents a communication system where point-to-point transmissions are aided by L half-duplex, amplify and forward relays which access a common channel by means of random spreading matrices. During the relaying phase, the source can either remain silent or send new symbols.
David Gregoratti, Xavier Mestre
openaire   +2 more sources

Multiple Access Channels With Full-Duplex Amplify-and-Forward Transmitter Cooperations

IEEE Access, 2019
In this paper, a full-duplex (FD) transmitter cooperative scheme is proposed to improve the achievable rate for multiple access channels (MACs). In the proposed scheme, by leveraging the FD amplify-and-forward (AF) protocol, two FD transmitters send ...
Qingpeng Liang, Donglin Liu, Chuan Huang
doaj   +1 more source

Joint Channel-Network Coding for the Gaussian Two-Way Two-Relay Network

EURASIP Journal on Wireless Communications and Networking, 2010
New aspects arise when generalizing two-way relay network with one relay to two-way relay network with multiple relays. To study the essential features of the two-way multiple-relay network, we focus on the case of two relays in our work.
Ping Hu, Chi Wan Sung, Kenneth W. Shum
doaj   +1 more source

EFFECTS OF THE NUMBER OF RELAY ANTENNAS AND RELAY-POWER ON MIMO PRECODED TWO-WAY RELAYING [PDF]

ICTACT Journal on Communication Technology, 2011
In this treatise a two-way Amplify and Forward (AF) relay-aided system is considered, which employs the so-called Arithmetic Sum of Average Bit Error Rate (ASABER) based MIMO precoding technique.
S.S. Rajeshwari, Lajos Hanzo, Giridhar Krishnamurthy   +2 more
doaj  

Performance Analysis of Cooperative Quadrature Spatial Modulation System With Hybrid Decode-Amplify-Forward Relaying Protocol

IEEE Access
This paper introduces the cooperative quadrature spatial modulation (CQSM) system with hybrid decode-amplify-forward (HDAF) relaying protocol. Compered with the traditional CQSM system which only uses amplify-and-forward (AF) protocol and decode-and ...
Xiangyan Bu, Ke Pang
doaj   +1 more source

Asymptotic Analysis of Amplify and Forward Relaying in a Parallel MIMO Relay Network

, 2007
This paper considers the setup of a parallel MIMO relay network in which $K$ relays, each equipped with $N$ antennas, assist the transmitter and the receiver, each equipped with $M$ antennas, in the half-duplex mode, under the assumption that $N\geq{M}$.
Bayesteh, Alireza, Gharan, Shahab Oveis, Khandani, Amir K.   +2 more
core   +4 more sources

Experimental full-duplex amplify-and-forward relay scheme for OFDM with power gain control

Journal of Information and Intelligence
The fundamental challenges for full-duplex (FD) relay networks are the self-interference cancellation (SIC) and the cooperative transmission design at the relay.
Pu Yang, Xiang-Gen Xia, Qingyue Qu, Yi Liu   +3 more
doaj   +1 more source

Security-aware dual-hop communication for amplify-and-forward relay networks

International Journal of Distributed Sensor Networks, 2019
The authentication scheme for vehicular ad hoc networks aims to improve the security and integrity of message delivery. The base station manages a large number of vehicular nodes, so the security communications are non-trivial.
Fei Ding, Xiaojun Sun, Xiaojin Ding, Ruoyu Su, Dengyin Zhang, Hongbo Zhu   +5 more
doaj   +1 more source

Novel half-duplex relay strategy and its resource allocation

Tongxin xuebao, 2009
Conventional time-division half-duplex relay strategies based on amplify-and-forward or decode-and-forward strategy could relieve relay nodes from full-duplex requirement but lead to degraded spectrum efficiency.
LI Yong, WANG Wen-bo, KONG Jia, PENG Mu-gen   +3 more
doaj   +2 more sources