Systems Engineering and Electronics

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Collaborative beamforming based on directional perturbation using one bit feedback

Haifen Yang*, Ning Ding, Zhi Zheng, Shuisheng Lin, Zhongpei Zhang, and Guangjun Li   

  1. School of Communication & Information Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Online:2016-06-25 Published:2010-01-03


A novel collaborative beamforming algorithm is proposed in a wireless communication system with multiple transmitters and one receiver. All transmitters take part in the collaboration and the weighted message is transmitted simultaneously. In order to maximize the beamforming gain, the transmitters use one bit feedback information to adjust the phase offset. It tracks the direction in which the signal strength at the receiver can increase. The directional search and perturbation theory is used to achieve the phase alignment. The feasibility of the proposed algorithm is proved both experimentally and theoretically. Simulation results show that the proposed algorithm can improve the convergent speed of the phase alignment.