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一种自适应调制V-BLAST系统的功率受限分配算法 被引量：1

A Loading Algorithm with Power Constraints in Adaptive Modulation for V-BLAST Systems
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摘要 提出了一种自适应调制垂直-贝尔实验室分层空时结构(V-BLAST)系统的低复杂度比特、功率分配算法,满足总平均功率和单根发射天线峰值功率受限条件下使比特率最大化.该算法可以达到与比特递增分配算法相同的最优分配结果,而计算量大幅度降低.仿真结果表明,在满足目标误比特率条件下,单天线功率限制会使比特率降低. A bit loading and power allocation algorithm with low complexity in adaptive modulation for vertical-Bell laboratory layered space-time systems was proposed to implement the rate maximization, satisfying peak power constraint on each antenna as well as the average total power limit. The proposed algorithm is of the same optimal allocation as the incremental algorithm while the computation complexity declines significantly. The simulation results show that the limitation of per-antenna peak power will decrease the bit rate under the target bit error rate.
作者 宋扬 常永宇 张欣 杨大成
机构地区 北京邮电大学电信工程学院
出处 《北京邮电大学学报》 EI CAS CSCD 北大核心 2006年第1期48-51,共4页 Journal of Beijing University of Posts and Telecommunications
基金 东南大学移动通信国家重点实验室开放课题(A0305)
关键词 垂直-贝尔实验室分层空时结构 自适应调制 分配算法 功率受限 vertical-Bell laboratory layered space-time adaptive modulation loading algorithm power constraint
分类号 TN911.22 [电子电信—通信与信息系统]
  • 相关文献

参考文献7

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共引文献78

同被引文献11

  • 1Chung S T, Goldsmith A J. degrees of freedom in adaptive modulation: a unified View [J]. IEEE Trans on Commun. (S0090-6778), 2001, 49(9): 1561-1571.
  • 2Nam S H, Shin O S, Lee K B. Transmit Power Allocation for a Modified V-BLAST System [J]. IEEE Trans on Commun. (S1000-582X), 2004, 52(8): 1074-1079.
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  • 4Wyglinski A M, Labeau F, Kabal P. An efficient bit allocation algorithm for multicarrier modulation [C]//WCNC 2004, Atlanta, GA, USA: IEEE, 2004: 1194-1199.
  • 5Krongold B S, Ramchandran K, Jones D L. Computationally efficient optimal power allocation algorithms for multicarrier communication systems [C]//IEEE Trans on Commun, 2000. USA: IEEE, 2000, 48: 23-27.
  • 6Nam S H, Shin O S, Lee K B. Transmit power allocation for a modified V-BLAST system [J]. IEEE Trans on Commun. (S0018-9448), 2004, 52(7): 1074-1079.
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北京邮电大学学报
2006年 第1期

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