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On the Performance of Cooperative Amplify-and-Forward Relay Networks

by Patrick Herhold, Ernesto Zimmermann, Gerhard Fettweis - in Proc. Conf. Source and Channel Coding , 2004
"... This paper provides a general analysis of cooperative amplify-and-forward relay networks and gives a unified and comparative view of various proposed systems. The studied cooperative relay networks offer spatial diversity gains that conventional multi-antenna systems often fail to achieve due to lim ..."
Abstract - Cited by 24 (4 self) - Add to MetaCart
This paper provides a general analysis of cooperative amplify-and-forward relay networks and gives a unified and comparative view of various proposed systems. The studied cooperative relay networks offer spatial diversity gains that conventional multi-antenna systems often fail to achieve due

Exact Ergodic Capacity of MIMO OSTBC Amplify-and-Forward Relay Network with Antenna Correlation

by Nuwan S. Ferdin, Ana Rajatheva, Matti Latva-aho
"... Abstract—Antenna correlation is usually viewed as a detrimen-tal effect in a multiple input multiple output (MIMO) system. This paper investigates how this affects the performance of an amplify-and-forward (AF) relay network. We consider multiple antennas at all nodes with a general correlation matr ..."
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matrix structure having an arbitrary eigenvalue distribution. We derive exact closed form expression for the ergodic capacity and simplify to special case of distinct eigenvalues. Further, we investigate the system in high signal-to-noise ratio (SNR) and derive a simple asymptotic expression. Our results

1Amplify-and-Forward in Wireless Relay Networks

by Samar Agnihotri, Sidharth Jaggi, Minghua Chen
"... A general class of wireless relay networks with a single source-destination pair is considered. Intermediate nodes in the network employ an amplify-and-forward scheme to relay their input signals. In this case the overall input-output channel from the source via the relays to the destination effecti ..."
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A general class of wireless relay networks with a single source-destination pair is considered. Intermediate nodes in the network employ an amplify-and-forward scheme to relay their input signals. In this case the overall input-output channel from the source via the relays to the destination

Optimal Relay Power Allocation for Amplify-and-Forward Relay Networks with

by Non-linear Power Amplifiers, Chao Zhang, Pinyi Ren, Jingbo Peng, Guo Wei, Qinghe Du, Yichen Wang
"... ar ..."
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On channel estimation and optimal training design for amplify-and-forward relay networks

by Feifei Gao, Tao Cui, Arumugam Nallanathan, Senior Member - IEEE Trans. Wireless Commun , 2008
"... Abstract — In this paper, we provide a complete study on the training based channel estimation issues for relay networks that employ the amplify-and-forward (AF) transmission scheme. We first point out that separately estimating the channel from source to relay and relay to destination suffers from ..."
Abstract - Cited by 58 (3 self) - Add to MetaCart
Abstract — In this paper, we provide a complete study on the training based channel estimation issues for relay networks that employ the amplify-and-forward (AF) transmission scheme. We first point out that separately estimating the channel from source to relay and relay to destination suffers from

Amplify-and-Forward Relay Transmission with End-to-End Antenna Selection

by unknown authors
"... Abstract—In this paper, the performance of a dual-hop Amplify-and-Forward (AF) multi-antenna relay network, with end-to-end (e2e) best antenna selection, is investigated. To in-vestigate the performance of this system, we first derive the exact outage probability in closed-form. It is then used to o ..."
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Abstract—In this paper, the performance of a dual-hop Amplify-and-Forward (AF) multi-antenna relay network, with end-to-end (e2e) best antenna selection, is investigated. To in-vestigate the performance of this system, we first derive the exact outage probability in closed-form. It is then used

Grassmannian Beamforming for MIMO Amplify-and-Forward Relaying

by Behrouz Khoshnevis, Wei Yu, Raviraj Adve
"... Abstract — In this paper, we consider the beamforming codebook design problem for the half-duplex MIMO amplify-andforward relay channel with Rayleigh fading. The analysis is divided into two steps. First, we present the optimal beamforming scheme with full channel state information (CSI) and derive ..."
Abstract - Cited by 42 (2 self) - Add to MetaCart
Abstract — In this paper, we consider the beamforming codebook design problem for the half-duplex MIMO amplify-andforward relay channel with Rayleigh fading. The analysis is divided into two steps. First, we present the optimal beamforming scheme with full channel state information (CSI) and derive

Capacity bounds and power allocation for wireless relay channels

by Anders Høst-madsen, Junshan Zhang - IEEE TRANS. INF. THEORY , 2005
"... We consider three-node wireless relay channels in a Rayleigh-fading environment. Assuming transmitter channel state information (CSI), we study upper bounds and lower bounds on the outage capacity and the ergodic capacity. Our studies take into account practical constraints on the transmission/rece ..."
Abstract - Cited by 317 (6 self) - Add to MetaCart
We consider three-node wireless relay channels in a Rayleigh-fading environment. Assuming transmitter channel state information (CSI), we study upper bounds and lower bounds on the outage capacity and the ergodic capacity. Our studies take into account practical constraints on the transmission

Fading relay channels: Performance limits and space-time signal design

by Rohit U. Nabar, Helmut Bölcskei, Felix W. Kneubühler - IEEE J. SELECT. AREAS COMMUN , 2004
"... Cooperative diversity is a transmission technique where multiple terminals pool their resources to form a virtual antenna array that realizes spatial diversity gain in a distributed fashion. In this paper, we examine the basic building block of cooperative diversity systems, a simple fading relay ch ..."
Abstract - Cited by 436 (4 self) - Add to MetaCart
channel where the source, destination and relay terminals are each equipped with single antenna transceivers. We consider three different TDMA-based cooperative protocols that vary the degree of broadcasting and receive collision. The relay terminal operates in either the amplify-and-forward (AF

Amplify-and-Forward Relay Systems

by Jun Ma, Philip Orlik, Jinyun Zhang, Toshiyuki Kuze, Hiroki Iura, Geoffrey Ye Li, Jun Ma, Philip Orlik, Jinyun Zhang, Toshiyuki Kuze, Hiroki Iura, Geoffrey Ye Li , 2009
"... In this paper, we propose a static power allocation algorithm for a two-hop multi-input-multioutput (MIMO) amplify-and-forward (AF) relay system in which the interim channel state information over the first and the second hops is unavailable. Based on the path losses over the first and the second ho ..."
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In this paper, we propose a static power allocation algorithm for a two-hop multi-input-multioutput (MIMO) amplify-and-forward (AF) relay system in which the interim channel state information over the first and the second hops is unavailable. Based on the path losses over the first and the second
Results 1 - 10 of 110,368