Downlink beamforming under individual SINR and per antenna power constraints
IEEE Pacific RIM Conference on Communications, Computers, and Signal Processing - Proceedings
422 - 425
Item Usage Stats
MetadataShow full item record
In this paper we consider the problem of finding the optimum beamforming vectors for the downlink of a multiuser system, where there are individual signal to interference plus noise ratio (SINR) targets for each user. Majority of the previous work on this problem assumed a total power constraint on the base stations. However, since each transmit antenna is limited by the amount of power it can transmit due to the limited linear region of the power amplifliers, a more realistic constraint is to place a limit on the per antenna power. In a recent work, Yu and Lan proposed an iterative algorithm for computing the optimum beamforming vectors minimizing the power margin over all antennas under individual SINR and per antenna power constraints. However, from a system designer point of view, it may be more desirable to minimize the total transmit power rather than minimizing the power margin, especially when the system is not symmetric. Reformulating the transmitter optimization problem to minimize the total transmit power subject to individual SINR constraints on the users and per antenna power constraints on the base stations, the algorithm proposed by Yu and Lan is modified. Performance of the modified algorithm is compared with existing methods for various cellular array scenarios. ©2007 IEEE.
Electric power utilization
Signal to noise ratio
Individual (PSS 544-7)
Multi user systems
Per-antenna power constraints
Signal-to-Interference plus Noise-Ratio (SINR)
Total transmit power
Published Version (Please cite this version)http://dx.doi.org/10.1109/PACRIM.2007.4313264
Showing items related by title, author, creator and subject.
Alp, Y.K.; Arikan, O.; Bayri, A. (European Signal Processing Conference, EUSIPCO, 2013)In phased array antennas, by varying the complex element weights beam patterns with desired shapes can be synthesized and/or steered to desired directions. These complex weights can be implemented by using amplitude ...
Saenz, E.; Guven, K.; Ozbay, E.; Ederra, I.; Gonzalo, R. (Hindawi Publishing Corporation, 2010)The mutual coupling between elements of a multifrequency dipole antenna array is experimentally investigated by S -parameter measurements and planar near-field scanning of the radiated field. A multifrequency array with ...
Extracting power from sub-wavelength apertures by using electrically small resonators: Phenomenology, modeling, and applications Bilotti F.; Di Palma L.; Ramaccia, D.; Toscano, A.; Vegni L.; Ates, D.; Ozbay, E. (2012)In this contribution, we review our recent work on the extraction of the electromagnetic power from electrically small apertures by using metamaterial-inspired resonators. First, we present an antenna interpretation of the ...