摘要
多用户型的检测系统,既要求低误码率(BER),又要求较低计算复杂度.本文以此为目的提出一种新颖的具有差分结构的多用户反馈判决反馈均衡器系统,它是由多级具有差分结构的误差反馈滤波器的判决反馈均衡器(DFE-EFF)构成.此算法选择较优的多用户干扰抵消的具有误差反馈滤波器的判决反馈均衡器(多用户干扰抵消DFE- EFF,即多用户反馈DFE-EFF)的方法;并采用差分结构来解决因性能提升所带来复杂度增加的问题.文中给出仿真结果,就多用户反馈DFE-EFF以及具有差分结构的多用户反馈DFE-EFF性能和计算效率做出比较分析.
Bit error rate(BER) performance and computational efficiency are two keys which judgea mutiuser detectors performance. In DS-CDMA, a new multiuser interference cancellation decision feedback equalizer which has error feedback filter, based on difference structure, is presented. Compared with previous multiuser interference cancellation decision feedback equalizer which haserror feedback filter, the new approach reduces computational efficiency by using difference algorithm, also keeps a good BER performance.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2007年第B06期174-178,共5页
Acta Electronica Sinica
基金
国家自然科学基金重大项目(No.60496315)
国家863高技术研究发展计划(No.2003AA12331005)