Dual-stream beamforming based HARQ schemes for LTE-advanced system

  • Authors:

  • Yang Liu;Wenbo Wang;Hui Zhao;Lu Han

  • Affiliations:

  • Wireless Signal Processing and Network Lab, Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts & Telecommunications, Beijing, China;Wireless Signal Processing and Network Lab, Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts & Telecommunications, Beijing, China;Wireless Signal Processing and Network Lab, Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts & Telecommunications, Beijing, China;Wireless Signal Processing and Network Lab, Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts & Telecommunications, Beijing, China

  • Venue:
  • WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
  • Year:
  • 2009

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Abstract

In this paper, we propose two novel HARQ schemes based on dual-stream joint beamforming for Long Term Evolution (LTE) - Advanced system. As one of the most competitive techniques, dual-stream beamforming can achieve multiplexing gain together with beamforming gain. In this paper, algorithm for beamforming vectors is investigated and two novel HARQ schemes are proposed on this basis to further increase the system performance. In addition, to evaluate the performance of the proposed HARQ strategy, they are implemented into LTE-A system and simulated. Our simulation results show that the two schemes have advantage each and they are practical for LTE-A system with significant performance improvement in throughput.