首页|基于多维扩展的正交时序复用波形框架及其性能分析

基于多维扩展的正交时序复用波形框架及其性能分析

扫码查看
原文链接
  • 万方数据
  • 维普
正交时序复用(OTSM)是一种适用于高速移动场景的低复杂度调制方法.然而,单一的波形设计方法难以满足多样化的应用需求和性能需求.因此,该文基于加权分数傅里叶变换(WFRFT)提出了加权分数沃尔什-哈达玛变换(WFRWHT),并提出了多维扩展的一体化的加权分数傅里叶变换-加权分数沃尔什哈达玛变换-正交时序复用(WFRFT-WFRWHT-OTSM)波形框架.通过对2维参数的灵活配置,该框架可退化为OTSM、正交时频空、混合载波、正交频分复用和单载波等波形,同时研究了采用高斯-赛德尔(GS)迭代均衡时一体化WFRFT-WFRWHT-OTSM波形在时延-多普勒信道下的误码率(BER)性能以及峰均功率比(PAPR)性能.仿真结果表明,在不同时延-多普勒信道下,该框架可通过改变WFRFT和WFRWHT阶次实现更优的BER和PAPR性能.
Orthogonal Time Sequency Multiplexing Waveform Framework Based on Multi-dimensional Extension and Its Performance Analysis
Orthogonal Time Sequency Multiplexing (OTSM) is a low-complexity modulation method suitable for high-speed mobile scenarios. However, a single waveform design method is difficult to meet diverse application requirements and performance demands. Therefore, on basis of Weighted FRactional Fourier Transform (WFRFT), a Weighted FRactional Walsh-Hadamard Transform (WFRWHT) is proposed and an integrated WFRFT-WFRWHT-OTSM waveform framework based on multidimensional extensions is put forward. Through the flexible configuration of two-dimensional parameters, this framework can be degraded to different waveforms such as OTSM, orthogonal time-frequency-space, hybrid carrier, orthogonal frequency division multiplexing and single carrier. In addition, Bit Error Rate (BER) and Peak-to-Average Power Ratio (PAPR) performances of the integrated WFRFT-WFRWHT-OTSM framework over delay-Doppler channels are studied with Gauss-Seidel (GS) iteration equalization. Simulation results show that the proposed framework achieves better BER and PAPR performances through changing the order of WFRFT and WFRWHT over different delay-Doppler channels.

Weighted FRactional Walsh-Hadamard Transform (WFRWHT)Weighted FRactional Fourier Transform (WFRFT)Orthogonal Time Sequency Multiplexing (OTSM)Orthogonal Time Frequency Space (OTFS)Gauss-Seidel (GS) iterative equalization

王震铎、谭正锋、孙溶辰

展开 >

哈尔滨工程大学信息与通信工程学院 哈尔滨 150001

加权分数沃尔什变换 加权分数傅里叶变换 正交时序复用 正交频分复用 高斯-赛德尔迭代均衡

国家自然科学基金黑龙江省自然科学基金中国博士后科学基金

62001138LH2021F0092020M670885

2024

10.11999/JEIT230248

电子与信息学报
中国科学院电子学研究所 国家自然科学基金委员会信息科学部

电子与信息学报

CSTPCD北大核心
影响因子：1.302
ISSN：1009-5896
年,卷(期)：2024.46(3)
  • 21