Title :
Dual-Stream Beamforming Based HARQ Schemes for LTE-Advanced System
Author :
Liu, Yang ; Wang, Wenbo ; Zhao, Hui ; Han, Lu
Author_Institution :
Wireless Signal Process. & Network Lab., Beijing Univ. of Posts &Telecommun., Beijing, China
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.
Keywords :
array signal processing; automatic repeat request; multiplexing; HARQ scheme; LTE-advanced system; dual-stream beamforming algorithm; hybrid automatic retransmission request; long term evolution advanced system; multiplexing; Array signal processing; Automatic repeat request; Long Term Evolution; MIMO; Signal mapping; Signal processing; Signal processing algorithms; System performance; Throughput; Wireless communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5305377
