数据采集与处理Issue(3)：571-577,7.DOI:10.16337/j.1004-9037.2015.03.012
存在信道相关及估计误差时V-BLAST系统的功率分配算法
Power Allocation Algorithm for Correlated V-BLAST System with Channel Estimation Error
摘要
Abstract
An adaptive transmit power allocation (TPA) scheme to minimize bit error rate (BER) is in‐vestigated in a vertical bell labs layered space‐time (V‐BLAST ) system with channel correlation and esti‐mation error .The closed expression for average BER can be derived according to the instantaneous sig‐nal‐to‐interference‐plus‐noise ratio (SINR) of each sub‐stream by system modeling and performance anal‐ysis .At the transmitter ,with the total TPA constraint condition ,TPA matrix is calculated through the Lagrange multiplier method .Numerical results demonstrate that the correlation structure and channel estimation error have a profound effect on the performance of V‐BLAST system .The proposed TPA scheme can improve the BER performance effectively and be practical for the actual communication sys‐tem .关键词
信道相关/垂直分层空时/估计误差/误比特率/自适应功率分配Key words
channel correlation/V-BLAST/estimation error/bit error rate (BER)/adaptive power allo-cation分类
信息技术与安全科学引用本文复制引用
谭伟,陈小敏,朱益民,朱秋明,党小宇..存在信道相关及估计误差时V-BLAST系统的功率分配算法[J].数据采集与处理,2015,(3):571-577,7.基金项目
中国博士后科学基金（2013M541661）资助项目；航空科学基金（20120152001）资助项目；国家自然科学基金（61172078）资助项目；江苏高校优势学科建设工程资助项目。 （）
