Optimal resource allocation in relay-assisted cellular networks with partial CSI
IEEE Transactions on Signal Processing
Cooperative transmission based on decode-and-forward relaying with partial repetition coding
IEEE Transactions on Wireless Communications
On relay selection for decode-and-forward relaying
IEEE Transactions on Wireless Communications
A cooperative multicast scheduling scheme for multimedia services in IEEE 802.16 networks
IEEE Transactions on Wireless Communications
Multi-relay cooperative OFDM with amplify-and-forward relaying
RWS'09 Proceedings of the 4th international conference on Radio and wireless symposium
Signal combining for relay transmission with rateless codes
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 1
IEEE Transactions on Wireless Communications
Bandwidth-efficient cooperative MIMO relaying schemes
Computers and Electrical Engineering
Analysis and code design of variable time-fraction collaborative communications
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Maximizing throughput in cooperative networks via cross-layer adaptive designs
Sarnoff'10 Proceedings of the 33rd IEEE conference on Sarnoff
Optimum power loading for non-coherent frequency-selective relay channels
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
IEEE Transactions on Wireless Communications
EURASIP Journal on Advances in Signal Processing - Special issue on applications of time-frequency signal processing in wireless communications and bioengineering
Novel distributed space-time trellis codes for relay systems over cascaded Rayleigh fading
IEEE Communications Letters
A cooperative-ARQ protocol with frame combining
Wireless Networks
| Hi-index | 754.84 |
The performance of two-phase collaborative communication protocols is studied for wireless networks. All the communication nodes in the cluster are assumed to share the same channel and transmit or receive collaboratively in a quasi-static Rayleigh flat-fading environment. In addition to small-scale fading, the effect of large-scale path loss is also considered. Based on a decode-and-forward approach, we consider various variable-rate two-phase protocols that can achieve full diversity order and analyze the effect of node geometry on their performance in terms of the outage probability of mutual information. For the single-relay node case, it is shown that if the collaborator node is close to the source node, a protocol based on space-time coding (STC) can achieve good diversity gain. Otherwise, a protocol based on receiver diversity performs better. These protocols are also compared with one based on fixed-rate repetition coding and their performance tradeoffs with node geometry are studied. The second part deals with multiple relays. It is known that with N relays an asymptotic diversity order of N+1 is achievable with STC-based protocols in the two-phase framework. However, in the framework of collaborative STC, those relay nodes which fail to decode remain silent (this event is referred to as a node erasure). We show that this node erasure has the potential to considerably reduce the diversity order and point out the importance of designing the STC to be robust against such node erasure