To better serve future vehicular network, we judiciously design an anti-Doppler index modulation termed as pre-compensation assisted generalized beam index modulation (PC-GBIM) for wideband mmWave massive multiple-input multiple-output (mMIMO) systems. The proposed PC-GBIM design comprises two key elements. First, we generalize the existing beam index modulation (BIM) from the hybrid narrowband to hybrid wideband systems and from activating single beam to activating multiple beams. Secondly, an effective first-order Doppler pre-compensator is introduced to assist index modulation, such that the originally complicated block-based maximum likelihood (ML) detection degenerates into the simple subcarrier-based ML detection. Both the theoretical analyses and numerical simulations have been made and demonstrate the superiority over existing alternatives in doubly-selective channels.
Bibliographical noteFunding Information:
Manuscript received August 26, 2020; revised October 13, 2020; accepted October 14, 2020. Date of publication October 26, 2020; date of current version February 9, 2021. This work was supported in part by the Ministry National Key Research and Development Project under Grant 2017YFE0121400, and in part by the National Science Foundation under Grant CPS-1932413 and Grant ECCS-1935915. The associate editor coordinating the review of this article and approving it for publication was S. Sugiura. (Corresponding author: Xiang Cheng.) Yajun Fan is with the School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China (e-mail: firstname.lastname@example.org).
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- first-order Doppler pre-compensation
- pre-compensation assisted generalized beam index modulation