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5030 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 7, NO. 12, DECEMBER 2008 Scaling Laws of
 

Summary: 5030 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 7, NO. 12, DECEMBER 2008
Scaling Laws of
Multiple Antenna Group-Broadcast Channels
Tareq Y. Al-Naffouri, Amir F. Dana, and Babak Hassibi
Abstract--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.
Index Terms--MIMO systems, transmit diversity, broadband
mobile communication systems, wireless personal communication

  

Source: Al-Naffouri, Tareq Y. - Electrical Engineering Department, King Fahd University of Petroleum and Minerals

 

Collections: Engineering