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应用科学学报 ›› 2007, Vol. 25 ›› Issue (1): 26-29.

• 论文 • 上一篇    下一篇

Blast结构SUC检测的容量优化

潘文, 蒋占军, 王炎, 尤肖虎   

  1. 东南大学移动通信国家重点实验室, 江苏南京 210096
  • 收稿日期:2005-10-20 修回日期:2005-12-26 出版日期:2007-01-31 发布日期:2007-01-31
  • 作者简介:潘文,博士生,研究方向:新一代移动通信中的关键技术,E-mail:panwendoctor@163.com;尤肖虎,教授,博导,研究方向:未来宽带移动通信理论技术、智能信号处理与通信,E-mail:xhyou@seu.edu.cn
  • 基金资助:

    国家自然科学基金资助项目(60496311)

Optimal Capacity Method of Blast Architecture for SUC Detection

PAN Wen, JIANG Zhan-jun, WANG Yan, YOU Xiao-hu   

  1. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
  • Received:2005-10-20 Revised:2005-12-26 Online:2007-01-31 Published:2007-01-31

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摘要：

在分析Blast各态历经信道容量的基础上,提出了一种优化的天线能量分配方式,通过容量上界分析证明,采用这种能量分配方案,可以使Blast信道历经容量最大化.仿真结果表明,在信噪比较低的情况下,信道容量比采用天线平均能量分配方式有较明显的改善.

关键词: 多输入多输出, 容量, Blast

Abstract:

When a blast system employs the successive interference cancellation (SUC) method to detect signal, the diversity orders of transmitter antennas are not equal to each other, resulting in the different statistical characteristic among the channels of different transmitter antennas.In this case, the antenna average energy allocation (AAEA) method is not optimal in achieving the largest channel capacity.In this paper, based on analysis of channel ergodic capacity of a blast system, an antenna optimization energy allocation (AOEA) method is proposed.It is proved by capacity upperbound analysis that, by employing this method, channel ergodic capacity can be maximized.Simulation results show that channel capacity is improved at low SNR with the AAOA method.

Key words: MIMO, Blast, capacity

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