Title :
Closed-Loop Space Time Block Coding for High Data Rate with Angle Feedback
Author :
Kim, Joonsuk ; Ariyavistakul, S.L. ; Seshadri, Nambi
Author_Institution :
Office of the CTO, Broadcom Corp., Sunnyvale, CA, USA
Abstract :
Transmit diversity schemes with multiple streams obtain reliable transmission but suffer from interference when decoding multiple streams simultaneously. In this paper, we present closed-loop space-time block codes for multiple streams with limited channel information in order to ease suppressing interference at a receiving station. The proposed scheme includes constellation rotation in Alamouti coding pairs by feedback angle information. The sub-optimum solution for feedback angle is found to maximize the output signal-to-noise ratio (SNR). Simulation results show the proposed scheme with only a few bits feedback achieves nearly full diversity gain with reduced interference.
Keywords :
MIMO communication; channel coding; diversity reception; radio receivers; radiofrequency interference; space-time block codes; wireless channels; Alamouti coding pair; angle feedback; channel information; closed-loop space time block coding; diversity gain; feedback angle information; high data rate; multiple stream decoding; output signal-to-noise ratio; receiving station; suboptimum solution; transmit diversity scheme; Cost function; Fading; Interference; Phase shift keying; Receiving antennas; Signal to noise ratio;
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
DOI :
10.1109/icc.2011.5962624
