Residual sampling clocking offset estimation and compensation for FBMC-OQAM baseband receiver in the 60 GHz band

In this paper, we propose a tracking mechanism for the residual sampling clocking offset (SCO) with corresponding pilot and auxiliary pilot arrangements for filter bank multi-carrier (FBMC) offset QAM (OQAM) baseband receiver in the 60 GHz band. This work can effectively compensate the non-ideal effects on the high-band subcarriers while using more data subcarrier for increasing bandwidth efficiency. This work is designed based on IEEE 802.15.3c and IEEE 802.11ad standards and synthesized with 40 nm 1P9M general purposes (GP) process. The proposed SCO tracking module with the proposed alternated pilot and auxiliary pilot arrangement can improve the BER floor and reach to 10−2 at SNR of 22 dB which is only 1.75 dB more than that of no SCO effect in 64-QAM modulation.