Title :
A closed form approximation of the sum rate upperbound of random beamforming
Author :
Kim, Yohan ; Yang, Janghoon ; Kim, Dong Ku
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul
fDate :
5/1/2008 12:00:00 AM
Abstract :
In this letter, a closed form expression of the sum rate upperbound is derived for random beamforming. The proposed analytic solution provides a good approximation of the ´actual´ sum rate performance, for which the conventional asymptotic analysis is less meaningful. Moreover, our result leads to an implication of the asymptotic growth rate of M log log K.
Keywords :
MIMO communication; antenna arrays; approximation theory; array signal processing; broadcast channels; multiuser channels; wireless channels; asymptotic growth rate; closed form approximation; multiple antenna MIMO broadcast channel; multiuser channel; random beamforming; sum rate upperbound; Analytical models; Array signal processing; Broadcasting; Performance analysis; Power system modeling; Receiving antennas; Reflector antennas; Signal to noise ratio; System analysis and design; Transmitting antennas;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2008.080150