Achieving maximum spatial diversity with decouple-and-forward relaying in dual-hop OSTBC transmissions

Authors:
In-Ho Lee;Dongwoo Kim
Affiliations:
Department of Electrical Engineering and Computer Science, Hanyang University, Ansan, Korea;Department of Electrical Engineering and Computer Science, Hanyang University, Ansan, Korea
Venue:
IEEE Transactions on Wireless Communications
Year:
2010

Citing 4
Cited 1

Modern Wireless Communication

Modern Wireless Communication
Distributed GABBA space-time codes in amplify-and-forward relay networks

IEEE Transactions on Wireless Communications
Distributed Space-Time Coding in Wireless Relay Networks

IEEE Transactions on Wireless Communications
Space-time block codes from orthogonal designs

IEEE Transactions on Information Theory

Probability Analysis of Capacity Gain by Cooperative Relaying Over Single-Hop OSTBC Transmission in Low SNR Regime

Wireless Personal Communications: An International Journal

Quantified Score

Hi-index	0.01

Visualization

Abstract

In this letter, we prove that decouple-and-forward (DCF) relaying for dual-hop orthogonal space-time block code (OSTBC) transmissions achieves the maximum diversity order attainable by dual-hop MIMO relaying systems. Decoupling at the relay transforms received OSTBC signals into independent and maximal-ratio combined single-input single-output (SISO) signals, which provides the receive diversity gain, and also enables the relay to use OSTBCs again so as to achieve the transmit diversity gain. In obtaining the diversity order, DCF relaying needs a coherence interval of the length of OSTBC transmissions, which is shorter than the requirement assumed in other works that provide the maximum diversity. Numerical results are also presented to verify the proof and give an insight to the relationship between the diversity order and antenna configurations.