Title :
Hybrid Codebook Design for Multiuser MISO Systems with Limited Feedback
Author :
Ko, Kyeongjun ; Lee, Jungwoo
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul, South Korea
Abstract :
Multiuser MIMO (MU-MIMO) system with limited feedback can be divided into two classes generally. One is zero-forcing beamforming (ZFBF), and the other is per user unitary rate control (PU2RC) which is an extended technique of random beamforming (RBF). However, in order to perform well, ZFBF requires many feedback bits, and PU2RC requires many users. These drawbacks of the existing MU-MIMO systems limit system performance in real environment. In this paper, we propose a new MU-MISO system which has merits of two MU-MIMO schemes simultaneously. Simulation results show the new MU-MISO system has good performance with simple feedback and low complexity user selection.
Keywords :
Array signal processing; Communications Society; Downlink; Feedback; Interference elimination; MIMO; Radio control; Receiving antennas; Signal to noise ratio; System performance;
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2010 IEEE
Conference_Location :
Sydney, Australia
Print_ISBN :
978-1-4244-6396-1
DOI :
10.1109/WCNC.2010.5506431
