Space-time beamforming for multiuser wireless relay networks

Publisher:
IEEE
Publication Type:
Conference Proceeding
Citation:
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2011, pp. 2836 - 2839
Issue Date:
2011-08-18
Full metadata record
Files in This Item:
Filename Description Size
spa.pdfPublished version195.15 kB
Adobe PDF
The paper is concerned with a multiuser communication network, which is assisted by multiple relays. It has been observed through our previous related works that the conventional simultaneous beamforming at parallel amply-and-forward (AF) relays is not quite effective and often infeasible to target practically desirable signal-to-interference-and-noise ratio (SINR) at the destinations. To overcome this shortage, we propose the time-division for multiple-user transmission to the relays so the later can perform beamforming on signals received from the individuals and then parallelly forward its combinations at once to the destinations. The optimal beamforming problem is a nonconvex quadratically constrained optimization, which is globally solved by our tailored algorithm of nonsmooth optimization. Its found global optimal solutions are shown very effective and over-perform other possible multi-user relay beamformings. © 2011 IEEE.
Please use this identifier to cite or link to this item: