基于多参数可变滤波器的GFDM性能研究

doi:10.12305/j.issn.1001-506X.2023.10.33

系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (10): 3286-3292.doi: 10.12305/j.issn.1001-506X.2023.10.33

• 通信与网络 • 上一篇

基于多参数可变滤波器的GFDM性能研究

王震铎, 王朝晖, 孙志国, 宁晓燕

哈尔滨工程大学信息与通信工程学院, 黑龙江哈尔滨 150001

收稿日期:2022-10-06 出版日期:2023-09-25 发布日期:2023-10-11
通讯作者: 宁晓燕
作者简介:王震铎(1989—), 男, 副教授, 博士, 主要研究方向为5G波形设计理论与关键技术、变换域通信系统理论等
王朝晖(1998—), 男, 硕士研究生, 主要研究方向为5G波形设计理论与关键技术
孙志国(1977—), 男, 教授, 博士, 主要研究方向为新一代数据链与集群通信系统、认知通信防护技术、多维电磁频谱感知技术等
宁晓燕(1984—), 女, 副教授, 博士, 主要研究方向为5G通信物理层新技术、认知通信、军用数据链等
基金资助:
国家自然科学基金(62001138);黑龙江省自然科学基金(LH2021F009);中国博士后科学基金(2020M670885)

GFDM performance research based on multiparameter variable filter

Zhenduo WANG, Zhaohui WANG, Zhiguo SUN, Xiaoyan NING

School of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China

Received:2022-10-06 Online:2023-09-25 Published:2023-10-11
Contact: Xiaoyan NING

摘要/Abstract

摘要：

作为适用于5G/B5G场景的多载波调制方案之一, 广义频分复用(generalized frequency division multiplexing, GFDM)波形具有灵活的时频资源分布。为了进一步降低GFDM系统的带外功率泄露, 提出了一种基于多参数可变的GFDM原型滤波器, 通过多参数的灵活配置实现了更好的带外功率抑制能力, 以及带外功率抑制效能的精确控制, 同时推导了带有多参数可变滤波器的GFDM系统在频率选择性衰落信道下的理论误码率(bit error rate, BER)表达式。此外, 为了进一步提升GFDM系统在复杂信道场景下的BER性能, 提出了适用于多参数GFDM波形的消息传递(message passing, MP)接收机, 根据等效信道矩阵给出了MP接收算法的数学模型。仿真结果表明, MP接收机可有效提升GFDM波形在复杂信道下的BER性能, 同时基于多参数可变滤波器的GFDM系统在有效抑制带外功率的同时, 与传统升余弦(raised cosine, RC)滤波器相比, 在应用MP接收机时仅有很小的BER性能损失。

关键词: 广义频分复用, 多参数滤波器, 消息传递, 误码率

Abstract:

As one of multi-carrier modulation schemes suitable for 5G/B5G scenarios, the generalized frequency division multiplexing (GFDM) waveform has flexible time-frequency resource distribution. To further reduce out-of-band power leakage of GFDM system, a multiparameter variable GFDM prototype filter is proposed. The flexible configuration of multiparameter method achieves better out-of-band power suppression performances and a precise control of out-of-band power efficiency suppression. Simultaneously, theoretical bit error rate (BER) expression of GFDM system with multiparameter variable filter under frequency selective fading channel is derived. In addition, in order to further improve the BER performance of GFDM system in complex channel scenarios, a message passing (MP) receiver suitable for multiparameter GFDM waveforms is proposed, and the mathematical model of the MP receiving algorithm is given according to the equivalent channel matrix. Simulation results show that the MP receiver can effectively improve the BER performance of GFDM waveform in complex channels. Moreover, the variable filter based on multiparameter can effectively suppress out-of-band power with slight BER loss in comparison with traditional raised cosine (RC) filter.

Key words: generalized frequency division multiplexing (GFDM), multiparameter filter, message passing (MP), bit error rate (BER)

中图分类号:

TN911

王震铎, 王朝晖, 孙志国, 宁晓燕. 基于多参数可变滤波器的GFDM性能研究[J]. 系统工程与电子技术, 2023, 45(10): 3286-3292.

Zhenduo WANG, Zhaohui WANG, Zhiguo SUN, Xiaoyan NING. GFDM performance research based on multiparameter variable filter[J]. Systems Engineering and Electronics, 2023, 45(10): 3286-3292.

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基于多参数可变滤波器的GFDM性能研究

GFDM performance research based on multiparameter variable filter

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