Cooperative diversity in wireless networks: algorithms and architectures
Cooperative diversity in wireless networks: algorithms and architectures
Distributed Space-Time Coding in Wireless Relay Networks
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
Spectral efficient protocols for half-duplex fading relay channels
IEEE Journal on Selected Areas in Communications
Rate performance of AF two-way relaying in low SNR region
IEEE Communications Letters
Adaptive two-way relaying and outage analysis
IEEE Transactions on Wireless 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
Two-way MIMO relay precoder design with channel state information
IEEE Transactions on Communications
Relay selection with ANC and TDBC protocols in bidirectional relay networks
IEEE Transactions on Communications
A Cooperative Relay Selection for Two-Way Cooperative Relay Networks in Nakagami Channels
Wireless Personal Communications: An International Journal
A Two-Way MIMO Relaying Scheme with Partial Channel State Information
Wireless Personal Communications: An International Journal
Secrecy Rate of Two-Hop AF Relaying Networks with an Untrusted Relay
Wireless Personal Communications: An International Journal
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In this paper, the average sum rate of two-way amplify-and-forward (AF) half-duplex relaying system is analyzed. To this end, we first derive the harmonic mean of two independent gamma distributed random variables which have the same shape parameter but different scale parameters. By deriving tight upper and lower bounds for the average sum rate of two-way relaying, we verify that two-way relaying can significantly recover the spectrum efficiency loss of one-way relaying. We also extend the two-way AF half-duplex relaying to the case where source and destination terminals both transmit Alamouti's orthogonal space time block code (OSTBC) utilizing two antennas and the relay has only one antenna. By deriving both upper and lower bounds for the average sum rate as well as an upper bound for the pairwise error probability (PEP) for the proposed two-way OSTBC scheme, we show that the average sum rate is further improved compared to the single antenna case and a diversity order of two is also achieved. Furthermore, optimal power allocations under a global power constraint for two-way relaying with single antenna and the proposed two-way OSTBC scheme are derived analytically.