Full-rate cooperative communications with spatial diversity for half-duplex uplink relay channels

Authors:
Ui-Kun Kwon;Chan-Ho Choi;Gi-Hong Im
Affiliations:
Samsung Electronics Co., Ltd., Yongin, Korea and POSTECH;Department of Electronics and Electrical Engineering, Pohang University of Science and Technology, Pohang, Korea;Department of Electronics and Electrical Engineering, Pohang University of Science and Technology, Pohang, Korea
Venue:
IEEE Transactions on Wireless Communications
Year:
2009

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Abstract

This paper proposes a full-rate cooperative communication technique with spatial diversity for single-carrier transmissions. In order to achieve both the spatial diversity and the full-rate, data streams are simultaneously transmitted through all direct and relay channels with different phase rotation and cyclic delay patterns. The phase rotation and cyclic delay patterns are derived in the sense of minimizing interlayer interference and a corresponding destination structure is presented for decoupling each layer at the destination. Simulation results show that the proposed technique achieves spatial diversity without sacrificing spectral efficiency and outperforms conventional full-rate cooperative communication techniques.