Enhanced Cross Z-Complementary Set and Its Application in Generalized Spatial Modulation
Abstract
Generalized spatial modulation (GSM) is a novel multiple-antenna technique offering flexibility among spectral efficiency, energy efficiency, and the cost of RF chains. In this paper, a novel class of sequence sets, called enhanced cross Zcomplementary set (E-CZCS), is proposed for efficient training sequence design in broadband GSM systems. Specifically, an E-CZCS consists of multiple CZCSs possessing front-end and tail-end zero-correlation zones (ZCZs), whereby any two distinct CZCSs have a tail-end ZCZ when a novel type of cross-channel aperiodic correlation sums is considered. The theoretical upper bound on the ZCZ width is first derived, upon which optimal E-CZCSs with flexible parameters are constructed. For optimal channel estimation over frequency-selective channels, we introduce and evaluate a novel GSM training framework employing the proposed E-CZCSs.
Keywords
Cite
@article{arxiv.2311.18390,
title = {Enhanced Cross Z-Complementary Set and Its Application in Generalized Spatial Modulation},
author = {Zhen-Ming Huang and Cheng-Yu Pai and Zilong Liu and Chao-Yu Chen},
journal= {arXiv preprint arXiv:2311.18390},
year = {2023}
}