太赫兹科学与电子信息学报Issue(4)：533-538,6.DOI:10.11805/TKYDA201404.0533
子空间算法在OFDM信道时延估计中的应用
Application of subspace algorithm to time delay estimation in OFDM channels
刘超 1王英民1
作者信息
- 1. 西北工业大学 航海学院，陕西 西安 710072
- 折叠
摘要
Abstract
Time-Of-Arrival(TOA)-and-Time-Difference-Of-Arrival(TDOA)-methods-are-two-main-methods-in-wireless-location.-How-to-get-accurate-TOA-measurements-is-a-key-factor-to-realize-high-accuracy-mobile-location.-Orthogonal-Frequency-Division-Multiplexing(OFDM)-is-one-key-technology-in-wireless-multimedia-communication.-By-taking-advantage-of-the-information-carried-out-by-pilot-subcarriers-of-the-OFDM-signal,-and-referring-to-the-DOA-estimate-for-uniform-linear-array,-MUSIC(Multiple-Signal-Classification)-subspace-algorithm-is-applied-to-time-delay-estimation-of-OFDM-channel.-Related-conditions-for-distribution-of-pilots-within-OFDM-symbol-are-given,-and-simulation-is-performed-on-the-proposed-algorithm.-It-can-be-seen-that-the-increase-of-the-number-of-pilot-sub-carriers-and-the-expanding-of-pilot-sub-carriers-spacing-can-improve-the-estimation-accuracy.关键词
正交频分复用/到达时延/多径信道/子空间算法Key words
Orthogonal Frequency Division Multiplexing/Time Of Arrival/multipath channel/subspace algorithm分类
信息技术与安全科学引用本文复制引用
刘超,王英民..子空间算法在OFDM信道时延估计中的应用[J].太赫兹科学与电子信息学报,2014,(4):533-538,6.
