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Discrete Relay Beamforming for Broadcasting with Relay Selection
Date
2015-05-19
Author
Demir, Özlem Tuğfe
Tuncer, Temel Engin
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In this paper, broadcast beamforming problem is considered in relay-assisted wireless networks. Two-phase relay communication is adopted. In the first phase, a source transmits common information to multiple relays which use amplify-and-forward relay protocol. Each relay multiplies its received signal by a complex weight and transmits it to the receivers. The amplitudes and phases of complex relay weights are chosen from discrete sets in order to decrease overhead for the feedback channel. Relay selection is employed in order to decrease network complexity. Nonlinear optimization problem is converted to a linear form suitable for mixed integer linear programming. The optimum solution can be found using branch-and-cut method.
Subject Keywords
Relay beamforming
,
Relay selection
,
Discrete beam-forming
,
Mixed integer linear programming
URI
https://hdl.handle.net/11511/52744
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
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Ö. T. Demir and T. E. Tuncer, “Discrete Relay Beamforming for Broadcasting with Relay Selection,” 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52744.