多用户MIMO系统中基于不完全信道状态信息和天线选择
的性能研究
殷馨;虞湘宾;周婷婷;谭文婷;陈小敏
【期刊名称】《电路与系统学报》 【年(卷),期】2013(018)002
【摘要】In this paper,the performance of multiuser MIMO system based on imperfect channel state information (CSI) and antenna selection is investigated.By system modeling and performance analysis,utilizing mathematical transformations and conditional probability density functions,the accurate expression of average bit error rate (BER) for the system with imperfect feedback information is derived.This expression can evaluate the impact of feedback delay on the system performance,and it includes the BER expression under perfect CSI as a special case.In order to simplify the integration calculation of the accurate theoretical expression,an approximate BER expression is also derived by using the approximation of complementary error function.As a result,a simple closed-form expression is obtained.Computer simulation shows that the derived accurate and approximate theoretical expressions
can
accord
with
the
corresponding
simulation
results.Moreover,the system in the presence of imperfect CSI only has slight BER performance degradation for the normalized time delay less than 0.01.%本文研究了基于不完全信道信息和天线选择的多用户MIMO系统
多用户MIMO系统中基于不完全信道状态信息和天线选择的性能研究
