This paper presents the capacity of a modulo-sum simple relay network. In previous work related to this paper, capacity was characterized for the case where the noise was transmitted to the relay. And the closed-form capacity was derived only for the noise with a Bernoulli-( distribution. However, in this paper, the source is transmitted to the relay, and a more general case of noise with an ar...

A two-dimensional Channel Probability Space (CPS) based on the source-relay and relay-destination channel. In this paper, a non-linear CPS division method is used a single relay and the RN is competent for the moment storing the received packets. Extensively, a non-linear CPS method, which partitions the CPS into more than a few regions representing the quality of the specific channels plus an ...

This paper describes an approach for half-duplex cooperative transmission to achieve cooperative diversity in a classical three-node relay channel. Assuming availability of channel state information at the source and relay, the approach makes use of this information to optimize distinct flows through the direct link from the source to the destination and the path via the relay, respectively. It...

This paper considers a fully-connected interference network with a relay in which multiple users equipped with a single antenna want to exchange multiple unicast messages with other users in the network by sharing the relay equipped with multiple antennas. For such a network, the degrees of freedom (DoF) are derived by considering various message exchange scenarios: a multi-user fullyconnected ...

System Design and Outage Analysis for Cooperative Diversity Wireless Networks by Sungjoon Park Chair: Wayne E. Stark Relay communication systems have recently been gaining momentum as an alternative to cellular architectures because of the ability to provide cost-efficient high spectral efficiency communications. The goal of this thesis is to investigate opportunistic relay communication strate...

Most works on amplify and forward (AF) relaying assume that the relay obtains perfect channel state information (CSI) of the source-relay channel. This renders variable-gain relaying (VGR) an attractive technique, as the relay can ideally invert the channel at its input and thus ensure constant output power. What happens to the output power, however, if the CSI at the input is outdated? As an a...

Wireless Relaying is a promising solution to overcome the channel impairments and provides high data rate coverage that appears for beyond 3G mobile communications. In this paper we present end to end BER performance of dual hop wireless communication systems equipped with multiple Decode and Forward relays over Rayleigh fading channel with the best relay selection. We compare the BER performan...

This paper studies the Degrees of Freedom (DoF) of the two-user multi-antenna Gaussian interference channel with an instantaneous relay, or relay without delay, where the relay transmitted signal in channel use t can depend on all received signals up to and including that at channel use t. It is assumed that the two transmitters and the two receivers have M antennas, while the relay receives th...