Application of maximum rank distance codes in designing of STBC-OFDM system for next-generation wireless communications

IF 7.5 2区计算机科学 Q1 TELECOMMUNICATIONS

Digital Communications and Networks Pub Date : 2024-08-01 DOI:10.1016/j.dcan.2022.12.022

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引用次数: 0

Abstract

Space-Time Block Coded (STBC) Orthogonal Frequency Division Multiplexing (OFDM) satisfies higher data-rate requirements while maintaining signal quality in a multipath fading channel. However, conventional STBCs, including Orthogonal STBCs (OSTBCs), Non-Orthogonal (NOSTBCs), and Quasi-Orthogonal STBCs (QOSTBCs), do not provide both maximal diversity order and unity code rate simultaneously for more than two transmit antennas. This paper targets this problem and applies Maximum Rank Distance (MRD) codes in designing STBC-OFDM systems. By following the direct-matrix construction method, we can construct binary extended finite field MRD-STBCs for any number of transmitting antennas. Work uses MRD-STBCs built over Phase-Shift Keying (PSK) modulation to develop an MRD-based STBC-OFDM system. The MRD-based STBC-OFDM system sacrifices minor error performance compared to traditional OSTBC-OFDM but shows improved results against NOSTBC and QOSTBC-OFDM. It also provides 25% higher data-rates than OSTBC-OFDM in configurations that use more than two transmit antennas. The tradeoffs are minor increases in computational complexity and processing delays.

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最大秩距离码在下一代无线通信STBC-OFDM系统设计中的应用

时空块编码（STBC）正交频分复用（OFDM）可满足更高的数据传输速率要求，同时在多径衰减信道中保持信号质量。然而，包括正交 STBC（OSTBC）、非正交 STBC（NOSTBC）和准正交 STBC（QOSTBC）在内的传统 STBC 无法同时为两个以上的发射天线提供最大分集阶和统一码率。本文针对这一问题，在设计 STBC-OFDM 系统时应用了最大秩距（MRD）编码。通过直接矩阵构造方法，我们可以为任意数量的发射天线构造二进制扩展有限域 MRD-STBC。这项研究利用在相移键控（PSK）调制条件下构建的 MRD-STBC 开发了基于 MRD 的 STBC-OFDM 系统。与传统的 OSTBC-OFDM 系统相比，基于 MRD 的 STBC-OFDM 系统牺牲了较小的误差性能，但与 NOSTBC 和 QOSTBC-OFDM 相比，效果有所改善。在使用两个以上发射天线的配置中，它的数据传输速率比 OSTBC-OFDM 高 25%。折衷的结果是计算复杂度和处理延迟略有增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Digital Communications and Networks Computer Science-Hardware and Architecture

CiteScore

12.80

自引率

5.10%

发文量

915

审稿时长

30 weeks

期刊介绍： Digital Communications and Networks is a prestigious journal that emphasizes on communication systems and networks. We publish only top-notch original articles and authoritative reviews, which undergo rigorous peer-review. We are proud to announce that all our articles are fully Open Access and can be accessed on ScienceDirect. Our journal is recognized and indexed by eminent databases such as the Science Citation Index Expanded (SCIE) and Scopus. In addition to regular articles, we may also consider exceptional conference papers that have been significantly expanded. Furthermore, we periodically release special issues that focus on specific aspects of the field. In conclusion, Digital Communications and Networks is a leading journal that guarantees exceptional quality and accessibility for researchers and scholars in the field of communication systems and networks.