naa a22 4500 510791808 CHVBK 20180411083322.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-012-0933-7 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0933-7 Chang Ann-Chen Department of Information Technology, Ling Tung University, No.1 Ling Tung Road, 408, Taichung, Taiwan, ROC aut Blind Residual Carrier Frequency Offset and Timing Offset Estimation Using Improved Minimum Output Variance Approaches in Uplink MC-CDMA Systems [Elektronische Daten] [Ann-Chen Chang] This paper deals with blind residual carrier frequency offset (CFO) and timing offset (TO) estimation based on minimum output variance (MOV) criterion without devoting training sequence and pilot symbol for uplink multicarrier-code division multiple access (MC-CDMA) systems. It has been shown that the performance of MOV estimator is degraded because the effect of noise and wideband spread-spectrum signals. In conjunction with spreading code-aided and subspace projection techniques, we present an improved code-aided MOV (ICMOV) estimator to achieve the high accuracy estimate for the noisy case. Due to more accuracy residual CFO estimate can provide more accuracy residual TO estimate, this paper also present a decision-directed ICMOV (DD-ICMOV) approach to improve the estimation performance of ICMOV estimator. Computer simulations are provided for illustrating the effectiveness of the proposed approaches. Springer Science+Business Media New York, 2012 MC-CDMA nationallicence Uplink nationallicence Carrier frequency offset nationallicence Timing offset nationallicence Minimum output variance nationallicence Subspace nationallicence Wireless Personal Communications Springer US; http://www.springer-ny.com 71/3(2013-08-01), 2231-2246 0929-6212 71:3<2231 2013 71 11277 https://doi.org/10.1007/s11277-012-0933-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0933-7 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Chang Ann-Chen Department of Information Technology, Ling Tung University, No.1 Ling Tung Road, 408, Taichung, Taiwan, ROC aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/3(2013-08-01), 2231-2246 0929-6212 71:3<2231 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer