电讯技术Issue(1)：84-88,5.DOI:10.3969/j.issn.1001-893x.2014.01.016
一种新的多址信道有效阶数估计算法
A Novel Algorithm for Multi-access Channel Effective Order Estimation
摘要
Abstract
In order to improve the precision of channel parameter estimation, a novel channel effective or-der estimation scheme is proposed for multi-user Orthogonal Frequency Division Multiplexing/Space Divi-sion Multiple Access( OFDM/SDMA) uplink system in this paper. Exploiting Akaike’s Information Criteri-on ( AIC) as the evaluation function to search the optimal order, this scheme performs a joint channel ef-fective order and channel impulse response estimation in a parallel way based on the differential algorithm. With the introduction of AIC, it can reduce the estimation errors of multi-access channel effective order. Simulation results verify the validity and reliability of the proposed scheme. It is also shown that the pro-posed scheme achieves a better mean square error performance than the fixed channel order scheme and improves the performance of time-domain Maximum Likelihood channel estimator.关键词
多用户OFDM/SDMA/信道有效阶数/赤池信息量准则/信道估计/差分进化Key words
multi-user OFDM/SDMA/channel effective order/AIC/channel estimation/differential evolution分类
信息技术与安全科学引用本文复制引用
李双志,张喆,张建康,穆晓敏..一种新的多址信道有效阶数估计算法[J].电讯技术,2014,(1):84-88,5.基金项目
国家自然科学基金资助项目(61271421) （61271421）
国家自然科学基金青年科学基金资助项目(61301150) （61301150）
高等学校博士学科点专项科研基金(新教师类)项目(20134101120001)@@@@Foundation Item:The National Natural Science Foundation of China(No.61271421) （新教师类）
The Young Scientists Fund of the National Natural Sci-ence Foundation of China(No.61301150) （No.61301150）
The Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20134101120001) （No.20134101120001）
