A non-regenerative dual-hop wireless system based on a distributed space-time-coding
strategy is considered. It is assumed that each relay station retransmits an appropriate …

This paper proposes a novel power allocation among the source and relays of wireless relay
networks to minimize the mean-square error of the channel estimation when distributed …

In this paper, we propose high-rate space–time coding for cooperative wireless networks to
reduce the overall delay incurred in relaying signals to multiple receivers. The relay structure …

In this paper, we present a new robust scheme for use in asynchronous cooperative
networks over frequency-selective channels through using three and four relay nodes …

In this study, the authors develop a distributed space–time coding scheme for a two‐way
relay network that contains multiple distributed relay nodes. Both the time and frequency …

We study the asymptotic behavior of a cooperative scheme operating in amplify-and-forward
(AF) mode for a large number of relays. An optimal code design rule is derived through the …

In this paper, distributed spatial modulation (DSM) is introduced. DSM is a cooperative
diversity protocol for multirelay wireless networks, which is based on the concept of spatial …

We apply the idea of space-time coding devised for multiple-antenna systems to the problem
of communications over a wireless relay network with Rayleigh fading channels. We use a …

Cooperative diversity using distributed space-time codes has been recently proposed to
form virtual antennas in order to achieve diversity gain. In this paper, we propose a …

In multihop wireless networks, the quality of communications is degraded due to the relay
transmissions over fading channels. Space-time code using multiple transmit antennas is an …