【资料名称】：MU-MIMO with Localized Downlink Base Sta

【资料作者】：Lars Thiele

【资料日期】：2007

【资料语言】：英文

【资料格式】：PDF

【资料目录和简介】：

Abstract—Multi-cellular radio systems are often limited due to
the presence of cochannel interference. Proposed physical layer
concepts,e.g.coordinatedjointtransmissionandinterference
rejection combining, try to strengthen the signal while combating
the interference. It is well known that base station cooperation
yields great capacity improvement for downlink multi-antenna
cellularnetworks.However,theproposedsolutionsassumea
central processing unit, coordinating the information exchange
and thus determining the optimal resource allocation of the over-
all cellular network. Recently multi-user eigenmode transmission
was proposed to relax the constraint of channel state information
at the transmitter. It requires the terminals to feed back their
dominanteigenmodesonly.Toreducethecomputationalcosts
and the information exchange further, we consider limited local-
ized base station cooperation. We demonstrate potential capacity
gainsinacellularorthogonalfrequencydivisionmultiplexing
system using real 3D measured antenna patterns and the scaling
withthenumberofcooperatingantennaarrays.Additionally,
we use minimum mean square error equalization at the terminal
side to combat residual cochannel interference.