Scaling Laws of Multiple Antenna Group-Broadcast Channels

被引：7
作者：
Al-Naffouri, Tareq Y. [1 ]
Dana, Antir F. [2 ]
Hassibi, Babak [3 ]
机构：
[1] King Fahd Univ Petr & Minerals, Dept Elect Engn, Dhahran, Saudi Arabia
[2] Qualcomm Corp, San Diego, CA USA
[3] CALTECH, Pasadena, CA 91125 USA
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2008年 / 7卷 / 12期
关键词：
MIMO systems; transmit diversity; broadband mobile communication systems; wireless personal communication systems;
D O I：
10.1109/T-WC.2008.070902
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Broadcast (or point to multipoint) communication has attracted a lot of research recently. In this paper, we consider the group broadcast channel where the users' pool is divided into groups, each of which is interested in common information. Such a situation occurs for example in digital audio and video broadcast where the users are divided into various groups according to the shows they are interested in. The paper obtains upper and lower bounds for the sum rate capacity in the large number of users regime and quantifies the effect of spatial correlation on the system capacity. The paper also studies the scaling of the system capacity when the number of users and antennas grow simultaneously. It is shown that in order to achieve a constant rate per user, the number of transmit antennas should scale at least logarithmically in the number of users.
引用
收藏
页码：5030 / 5038
页数：9
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