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http://dx.doi.org/10.7840/KICS.2011.36C.7.481

Integer Frequency Offset Estimation by Pilot Subset Selection for DRM+ Systems with CDD  

Kwon, Ki-Won (전자부품연구원 모바일단말연구센터)
Cho, Yong-Soo (중앙대학교 디지털통신연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.7C, 2011 , pp. 481-487 More about this Journal
Abstract
Cyclic delay diversity (CDD) is a simple transmit diversity technique for an OFDM system using multiple transmit antennas. However, the performance of post-FFT estimation, i.e., integer frequency offset (lFO) is deteriorated by high frequency selectivity introduced by CDD. In this paper, the IFO estimation scheme is proposed for OFDM-based DRM+ system with CDD. Based on the pilot subset partitioning, the proposed IFO estimation scheme reduces the effect of performance degradation caused by frequency selectivity in OFDM systems with CDD . The simulation results show that the performance of the proposed IFO estimator is significantly improved when compared to that of the conventional IFO estimator.
Keywords
DRM+; CDD; IFO; Pilot partitioning;
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