Switch-and-examine node selection for efficient relaying systems
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
Cooperative diversity schemes for asynchronous wireless networks
Wireless Personal Communications: An International Journal
Code design for multihop wireless relay networks
EURASIP Journal on Advances in Signal Processing
EURASIP Journal on Advances in Signal Processing
Cyclic Division Algebras: A Tool for Space-Time Coding
Foundations and Trends in Communications and Information Theory
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A Novel Scheme of Multi-node Cooperation in Wireless Networks
CNSR '09 Proceedings of the 2009 Seventh Annual Communication Networks and Services Research Conference
Partner selection schemes for cooperative multi-hop relay networks
Proceedings of the 4th Annual International Conference on Wireless Internet
NETWORKING '09 Proceedings of the 8th International IFIP-TC 6 Networking Conference
EURASIP Journal on Wireless Communications and Networking - Special issue on cooperative communications in wireless networks
A distributed on-off amplify-and-forward protocol for the fading parallel relay channel
IEEE Communications Letters
IEEE Transactions on Communications
Exact BER analysis of distributed Alamouti's code for cooperative diversity networks
IEEE Transactions on Communications
To code in space and time or not in multihop relay channels
IEEE Transactions on Signal Processing
Distributed space-time coding for two-way wireless relay networks
IEEE Transactions on Signal Processing
Performance bounds for two-way amplify-and-forward relaying
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Co-ordinate interleaved distributed space-time coding for two-antenna-relays networks
IEEE Transactions on Wireless Communications
Distributed GABBA space-time codes in amplify-and-forward relay networks
IEEE Transactions on Wireless Communications
Impact of CSI on distributed space-time coding in wireless relay networks
IEEE Transactions on Wireless Communications
Single-symbol ML decodable distributed STBCs for partially-coherent cooperative networks
IEEE Transactions on Wireless Communications
Max-min relay selection for legacy amplify-and-forward systems with interference
IEEE Transactions on Wireless Communications
Hard/Soft detection with limited CSI for multi-hop systems
IEEE Transactions on Wireless Communications
Differential distributed cayley space-time codes
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Single and multiple relay selection schemes and their achievable diversity orders
IEEE Transactions on Wireless Communications
High-rate, single-symbol ML decodable precoded DSTBCs for cooperative networks
IEEE Transactions on Information Theory
Network beamforming using relays with perfect channel information
IEEE Transactions on Information Theory
D-MG tradeoff and optimal codes for a class of AF and DF cooperative communication protocols
IEEE Transactions on Information Theory
Power allocation strategies for distributed space-time codes in amplify-and-forward mode
EURASIP Journal on Advances in Signal Processing
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Distributed space-time diversity system using linear constellation precoding
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Distributed differential space-time codes based on Weyl's reciprocity
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
A distributed differential space-time coding scheme for two-way wireless relay networks
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
Low complexity distributed STBCs with unitary relay matrices for any number of relays
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 1
Optimal channel estimation and training design for two-way relay networks
IEEE Transactions on Communications
Distributed space-time trellis codes for a cooperative system
IEEE Transactions on Wireless Communications
Joint source/relay precoder design in nonregenerative cooperative systems using an MMSE criterion
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
An opportunistic-based protocol for bidirectional cooperative networks
IEEE Transactions on Wireless Communications
A relay selection scheme for the downlink of cellular networks
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Phase compensation for uplink distributed space-time cooperative protocol
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Adaptive multi-node incremental relaying for hybrid-ARQ in AF relay networks
IEEE Transactions on Wireless Communications
Filter-and-forward distributed beamforming in relay networks with frequency selective fading
IEEE Transactions on Signal Processing
Joint channel estimation in asynchronous amplify-and-forward relay networks based on OFDM signaling
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
Updatable ARQ protocol for distributed space-time coded relay networks
APCC'09 Proceedings of the 15th Asia-Pacific conference on Communications
Semi-blind channel estimation for space-time coded amplify-and-forward relay networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Cooperative transmission with continuous phase frequency shift keying and phase-forward relays
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Optimization of power constrained multi-source uplink relay networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Performance of asynchronous amplify-and-forward cooperative relay networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
A coordinate interleaved user cooperation scheme for distributed Alamouti space-time block code
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Information combining for relay networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
General-rank beamforming for multi-antenna relaying schemes
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Distributed beamforming in relay-assisted multiuser communications
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Channel estimation and performance of mismatched decoding in wireless relay networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
A novel power allocation scheme for distributed space-time coding
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Interference cancellation in distributed space-time coded wireless relay networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Performance analysis of distributed space-time coded protocols for wireless multi-hop communications
IEEE Transactions on Wireless Communications
Performance analysis of distributed transmission schemes in cooperative random networks
IEEE Transactions on Wireless Communications
Multi-hop MIMO relay networks: diversity-multiplexing trade-off analysis
IEEE Transactions on Wireless Communications
Cyclic distributed space-time codes for wireless relay networks with no channel information
IEEE Transactions on Information Theory
Shift-orthogonal space-time block codes
IEEE Transactions on Communications
Practical and general amplify-and-forward designs for cooperative networks
INFOCOM'10 Proceedings of the 29th conference on Information communications
Adaptive transmission in cooperative wireless communications
WD'09 Proceedings of the 2nd IFIP conference on Wireless days
Multigroup ML decodable collocated and distributed space-time block codes
IEEE Transactions on Information Theory
Analytical performance of amplify-and-forward MIMO relaying with orthogonal space-time block codes
IEEE Transactions on Communications
Full-rate distributed space-time coding for bi-directional cooperative communications
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
Orthogonal matrix precoding for relay networks
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
Exploiting cooperative advantages in slotted ALOHA random access networks
IEEE Transactions on Information Theory
IEEE Transactions on Communications
Combination of MRC and distributed space-time coding in networks with multiple-antenna relays
IEEE Transactions on Wireless Communications
Cooperative transmission for wireless relay networks using limited feedback
IEEE Transactions on Signal Processing
Joint receive-transmit beamforming for multi-antenna relaying schemes
IEEE Transactions on Signal Processing
Asymptotic ergodic capacity analysis for MIMO amplify-and-forward relay networks
IEEE Transactions on Wireless Communications
Power allocation strategies for distributed space-time codes in two-way relay networks
IEEE Transactions on Signal Processing
Timing estimation and resynchronization for amplify-and- forward communication systems
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
Performance of asynchronous two-relay two-hop wireless cooperative networks
IEEE Transactions on Wireless Communications
Efficient space-time codes from cyclic division algebras
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
A linear analog network coding for asynchronous two-way relay networks
IEEE Transactions on Wireless Communications
Decode-and-forward two-way relaying with network coding and opportunistic relay selection
IEEE Transactions on Communications
Distributed space-time block code over mixed rayleigh and rician frequency-selective fading channels
EURASIP Journal on Wireless Communications and Networking
Novel precoded relay-assisted algorithm for cellular systems
EURASIP Journal on Wireless Communications and Networking
Diversity Analysis of Relay Selection Schemes for Two-Way Wireless Relay Networks
Wireless Personal Communications: An International Journal
Distributed Space-Time Codes Using Constellation Rotation
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
A Survey of Distributed Relay Selection Schemes in Cooperative Wireless Ad hoc Networks
Wireless Personal Communications: An International Journal
Cooperative Space---Time Coding with Amplify-and- Forward Relaying
Journal of Signal Processing Systems
Joint precoding and power allocation for multiuser transmission in MIMO relay networks
International Journal of Communication Systems
Continuous Phase Modulation and Space-Time Coding: A Candidate for Wireless Robotics
Wireless Personal Communications: An International Journal
An efficient cooperative ARQ protocol for wireless relay networks
Computer Communications
Opportunistic Relaying for MIMO Amplify-and-Forward Cooperative Networks
Wireless Personal Communications: An International Journal
International Journal of Autonomous and Adaptive Communications Systems
Wireless Personal Communications: An International Journal
Optimal Timing at the Relay in OFDM Based Two Way Relay Systems
Wireless Personal Communications: An International Journal
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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 two-stage protocol, where in one stage the transmitter sends information and in the other, the relays encode their received signals into a "distributed" linear dispersion (LD) code, and then transmit the coded signals to the receive node. We show that for high SNR, the pairwise error probability (PEP) behaves as (logP/P)min{TH}, with T the coherence interval, that is, the number of symbol periods during which the channels keep constant, R the number of relay nodes, and P the total transmit power. Thus, apart from the log P factor, the system has the same diversity as a multiple-antenna system with R transmit antennas, which is the same as assuming that the R relays can fully cooperate and have full knowledge of the transmitted signal. We further show that for a network with a large number of relays and a fixed total transmit power across the entire network, the optimal power allocation is for the transmitter to expend half the power and for the relays to collectively expend the other half. We also show that at low and high SNR, the coding gain is the same as that of a multiple-antenna system with R antennas. However, at intermediate SNR, it can be quite different, which has implications for the design of distributed space-time codes