首页 | 本学科首页   官方微博 | 高级检索  
     


Blind Channel Estimation in Multicode CDMA Using Multiantenna Receiver
Authors:Melvasalo  Maarit  Koivunen  Visa
Affiliation:(1) Signal Processing Laboratory, SMARAD CoE, Helsinki University of Technology, P.O. Box 3000, FIN-02015 HUT, Finland
Abstract:In this paper blind channel estimation methods for long code CDMA system with multicode transmission are proposed. By allocating multiple codes, higher data rates may be provided to a user. Blind channel estimation allows reducing pilot signaling. Hence, higher effective data rates may be achieved and larger sample support may be obtained by using both the information symbols and known pilot symbols for channel estimation. Algorithms are extended to multi-antenna receiver which further improves the performance. The performance of the algorithms is studied in extensive simulations using WCDMA system model. The effects of code selection, interference and noise, number of antennas, antenna correlation are considered using frequency selective channel models. The proposed methods are more robust in the face of interference and code selection than the well-known subspace method in 7]. The computational complexity is lower as well.
Keywords:WCDMA  multicode  antenna array  blind channel estimation  subspace methods
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号