EURASIP Journal on Advances in Signal Processing
Efficient cooperative transmission scheme for resource-constrained networks
Proceedings of the 6th ACM international symposium on Mobility management and wireless access
EURASIP Journal on Wireless Communications and Networking
EURASIP Journal on Wireless Communications and Networking - Special issue on cooperative communications in wireless networks
To code in space and time or not in multihop relay channels
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
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
IEEE Transactions on Wireless Communications
Single and multiple relay selection schemes and their achievable diversity orders
IEEE Transactions on Wireless Communications
Power allocation strategies for distributed space-time codes in amplify-and-forward mode
EURASIP Journal on Advances in Signal Processing
Distributed space-time diversity system using linear constellation precoding
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
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
Cooperative diversity in the presence of impulsive noise
IEEE Transactions on Wireless Communications
An opportunistic-based protocol for bidirectional cooperative networks
IEEE Transactions on Wireless 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
Interference cancellation in distributed space-time coded wireless relay networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Asymptotic analysis of multiuser diversity and selection diversity in multiple-relay networks
ICC'09 Proceedings of the 2009 IEEE international conference on 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
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
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 Signal Processing
A linear analog network coding for asynchronous two-way relay networks
IEEE Transactions on Wireless Communications
EURASIP Journal on Advances in Signal Processing
Optimal Relay Selection for Energy-Efficient Multicast
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
Cooperative Space---Time Coding with Amplify-and- Forward Relaying
Journal of Signal Processing Systems
Opportunistic Relaying for MIMO Amplify-and-Forward Cooperative Networks
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Hi-index | 754.92 |
Distributed space-time coding was proposed to achieve cooperative diversity in wireless relay networks without channel information at the relays. Using this scheme, antennas of the distributive relays work as transmit antennas of the sender and generate a space-time code at the receiver. It achieves the maximal diversity when the transmit power is infinitely large. This paper is on the design of practical distributed space-time codes (DSTCs). We use orthogonal and quasi-orthogonal designs which are originally used in the design of space-time codes for multiple-antenna systems. It is well known that orthogonal space-time codes have full diversity and linear decoding complexity. They are particularly suitable for transmissions in the network setting using distributed space-time coding since their ldquoscale-freerdquo property leads to good performance. Our simulations show that they achieve lower error rates than the random code. We also compare distributed space-time coding to selection decode-and-forward using the same orthogonal designs. Simulations show that distributed space-time coding achieves higher diversity than selection decode-and-forward (DF) when there is more than one relay. We also generalize the distributed space-time coding scheme to wireless relay networks with channel information at the relays. Although our analysis and simulations show that there is no improvement in the diversity, in some networks, having channel information at the relays saves both the transmission power and the transmission time.