An achievable rate for the discrete memoryless relay channel with receiver-transmitter feedback is proposed based on Block-Markov superposition encoding. The achievable rate can also be extended to Gaussian channels. A second achievable rate for the Gaussian relay channel based on a Schalkwijk-Kailath type scheme is presented. For some channels both achievable rates strictly improve upon all pr...

In a bi-directional relay channel, a pair of nodes wish to exchange independent messages over a shared wireless half-duplex channel with the help of relays. Recent work has mostly considered information theoretic limits of the bi-directional relay channel with two terminal nodes (or end users) and one relay. In this work we consider bi-directional relaying with one base station, multiple termin...

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...

In this paper, we investigate the antenna and node selection issues for amplify-and-forward (AF) and decode-and-forward (DF) multi-antenna relay networks in correlated channels. Based on the channel statistics, optimal selection criteria for antenna and relay node are derived jointly, aiming to maximize the ergodic capacity. Instantaneous channel knowledge-based selection schemes, motivated by ...

Manuscript Received 23-October-2012 and revised 16-Janaury-2013 ISSN: 2322-4088 Accepted on daymonth-year Abstract— In this paper, Ultra-wideband (UWB) multiple access relay channel with correlated noises at the relay and receiver is investigated. We obtain outer and inner bounds for the IEEE 802.15.3a UWB multiple access relay channel, and also, a diversity gain bound. Finally, we evaluate som...

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...