东南大学学报（自然科学版）Issue(1)：19-22,4.DOI:10.3969/j.issn.1001-0505.2014.01.004
一种适用于分布式MIMO信道测量系统的最优导频设计
Optimal pilot design for distributed MIMO channel measurement systems
摘要
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 ac-cording 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 trans-mit signal and low-complexity implementation compared with the existing schemes.关键词
无线信道测量/分布式MIMO/导频/峰均功率比Key words
wireless channel measurement/distributed multiple-input multiple-output (MIMO)/pi-lot/peak-to-average power ratio (PAPR)分类
信息技术与安全科学引用本文复制引用
王海明,张慧,张念祖,杨广琦,洪伟..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,(1):19-22,4.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）． （）
