Novel Subspace methods for Blind Estimation of Multiple CFOs in MIMO-OFDM Systems

摘要：

The problem of estimating multiple Carrier Frequency Offsets (CFOs) in the uplink of MIMO-OFDM systems with Co-Channel (CC) and OFDMA based carrier allocation is considered. The tri-linear data model for generalized, multiuser OFDM system is formulated. Novel blind subspace based estimation of multiple CFOs in the case of arbitrary carrier allocation scheme in OFDMA systems and CC users in OFDM systems based on the Khatri-Rao product is proposed. The method works where the conventional subspace method fails. The performance of the proposed methods is compared with pilot based Least-Squares method.

关键词： Multiple Carrier Frequency Offsets MIMOOFDM OFDMA Khatri-Rao product subspace method Cochannel users

作者: Avik Santra KVS Hari

作者单位: Department of Electrical Communication Engineering Indian Institute of Science, Bangalore 560012

会议类型: 国际会议

会议名称: 2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)

会议地点: 北京

会议语种:英文

页码: 1449-1452

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）