[1]王海明,张慧,张念祖,等.一种适用于分布式MIMO信道测量系统的最优导频设计[J].东南大学学报(自然科学版),2014,44(1):19-22.[doi:10.3969/j.issn.1001-0505.2014.01.004]
　Wang Haiming,Zhang Hui,Zhang Nianzu,et al.Optimal pilot design for distributed MIMO channel measurement systems[J].Journal of Southeast University (Natural Science Edition),2014,44(1):19-22.[doi:10.3969/j.issn.1001-0505.2014.01.004]
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一种适用于分布式MIMO信道测量系统的最优导频设计()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第1期
页码:
19-22
栏目:
信息与通信工程
出版日期:
2014-01-18

文章信息/Info

Title:
Optimal pilot design for distributed MIMO channel measurement systems
作者:
王海明; 张慧; 张念祖; 杨广琦; 洪伟
东南大学毫米波国家重点实验室, 南京 210096
Author(s):
Wang Haiming;  Zhang Hui;  Zhang Nianzu;  Yang Guangqi;  Hong Wei
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
关键词:
无线信道测量;  分布式MIMO;  导频;  峰均功率比
Keywords:
wireless channel measurement;  distributed multiple-input multiple-output(MIMO);  pilot;  peak-to-average power ratio(PAPR)
分类号:
TN929.5
DOI:
10.3969/j.issn.1001-0505.2014.01.004
摘要:
研究适用于分布式MIMO无线通信信道测量系统的低峰均功率比导频信号优化方法和低复杂度多天线信号发送方案.为使发送信号的峰均功率比最低,采用OFDM技术,根据导频的长度、离散傅里叶变换的尺寸和子载波的映射方式,搜索最优的恒模零自相关(CAZAC)序列作为基序列.由最优基序列生成的OFDM发送信号峰均功率比低至2.556 dB.对第1根天线发送信号的采样点逐个移相,就可生成其余多根天线的发送信号.为支持分布式MIMO信道测量,采用所设计的信号帧格式的发送信号在时域和频域都可分离.与现有方案相比,所提出方案具有发送信号峰均功率比小和实现复杂度低的优点.
Abstract:
A low peak-to-average power ratio(PAPR)pilot signal optimization method and a low-complexity multiple-antenna transmit signal scheme are investigated for channel measurement systems of distributed multiple-input multiple-output(MIMO)wireless communications. To make the PAPR of the transmit signal be lowest, using the orthogonal frequency division multiplexing(OFDM)technique, the optimal constant amplitude zero auto-correlation(CAZAC)sequence is obtained according to the pilot length, the size of discrete Fourier transform, and the sub-carrier mapping scheme. Using the optimal CAZAC sequence as a base sequence, the transmit OFDM signal has the PAPR as low as 2.556 dB. By shifting the phase of each sample in the signal for the first transmit antenna, the signals for other transmit antennas are generated. For supporting distributed MIMO channel measurements, the transmit signals using the proposed frame structure are separable in both the time domain and the frequency domain. The proposed scheme has the merits of low-PAPR transmit signal and low-complexity implementation compared with the existing schemes.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2013-05-06.
作者简介: 王海明(1975—), 男, 博士, 副教授, 博士生导师, hmwang@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2013CB329002)、国家自然科学基金资助项目(61132003)、江苏省自然科学基金资助项目(BK2011019, BK20130631).
引用本文: 王海明,张慧,张念祖,等.一种适用于分布式MIMO信道测量系统的最优导频设计[J].东南大学学报:自然科学版,2014,44(1):19-22. [doi:10.3969/j.issn.1001-0505.2014.01.004]
更新日期/Last Update: 2014-01-20