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一种适用于Turbo-BLAST系统的自适应功率分配算法

An adaptive transmission power allocation scheme for the Turbo-BLAST system
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摘要 将自适应发送功率分配技术用于Turbo-BLAST(turbo-bell labs layered space-time)系统,提出了一种适用于Turbo-BLAST系统的自适应功率分配算法,给出了在完全信道状态信息条件下以最小化系统误比特率为目标的的最佳功率分配算法。发送端在部率约束条件下,利用自适应功率分配算法对发送信号进行功率加载,在接收端则利用基于最小均方误(minimum meansquare error,MMSE)的软件干扰抵消Turbo-BLAST迭代检测算法对接收信号进行检测,以进一步改善系统的误比特率性能。仿真结果表明,和等功率情况相比,所提算法可以显著降低系统的误比特率。 An adaptive transmission power allocation （TPA） algorithm is presented for the turbo-bell labs layerecl space-time （Turbo-BLAST） system. This algorithm aims to find the proper power allocation parameters with which the overall bit error rate （BER） can be minimized. At the transmitter, the TPA algorithm is used to allocate proper power to every antenna under the restriction of total transmission power. At the receiver, a modified iterative soft interference cancellation scheme is used to detect received signals to reduce BER further. Simulation results show that the BER of the proposed scheme can be decreased significantly compared with that of equal power allocation.
作者 陈小敏 徐大专 虞湘宾
机构地区 南京航空航天大学信息科学与技术学院
出处 《重庆大学学报（自然科学版）》 EI CAS CSCD 北大核心 2009年第3期337-340,348,共5页 Journal of Chongqing University
基金 江苏省自然科学基金资助项目(BK2007192) 移动通信国家重点实验室开放课题资助项目(N200502)
关键词 自适应发送功率分配 Turbo—BLAST 迭代检测 软干扰抵消 adaptive transmission power allocation Turbo-BLAST iterative detection soft interference cancellation
分类号 TN914 [电子电信—通信与信息系统]
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参考文献15

  • 1WOLNIANSKY P W, FOSCHINI G J, GOLDEN G D, et al. V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel[C]// Proceedings of the URSI International Symposium on Signals, Systems and Electronics. Italy: IEEE, 1998 : 295-300.
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二级参考文献12

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重庆大学学报（自然科学版）
2009年 第3期

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