Group-Decodable Space-Time Block Codes with Code Rate > 1
Abstract
High-rate space-time block codes (STBC with code rate > 1) in multi-input multi-output (MIMO) systems are able to provide both spatial multiplexing gain and diversity gain, but have high maximum likelihood (ML) decoding complexity. Since group-decodable (quasi-orthogonal) code structure can reduce the decoding complexity, we present in this paper systematic methods to construct group-decodable high-rate STBC with full symbol-wise diversity gain for arbitrary transmit antenna number and code length. We show that the proposed group-decodable STBC can achieve high code rate that increases almost linearly with the transmit antenna number, and the slope of this near-linear dependence increases with the code length. Comparisons with existing low-rate and high-rate codes (such as orthogonal STBC and algebraic STBC) are conducted to show the decoding complexity reduction and good code performance achieved by the proposed codes.
Cite
@article{arxiv.1011.3272,
title = {Group-Decodable Space-Time Block Codes with Code Rate > 1},
author = {Tian Peng Ren and Yong Liang Guan and Chau Yuen and Erry Gunawan and Er Yang Zhang},
journal= {arXiv preprint arXiv:1011.3272},
year = {2016}
}
Comments
Accepted by IEEE Trans. Commun., including 25 pages, 6 figures and 2 tables