一种高频场景候选波形方案

段向阳; 辛雨; 暴桐; 华健

doi:10.11999/JEIT200236

一种高频场景候选波形方案

doi: 10.11999/JEIT200236

1.
移动网络和移动多媒体技术国家重点实验室深圳 518000
2.
中兴通讯股份有限公司深圳 518000

基金项目: 广东省重点领域研发计划(2019B010157001)

详细信息

作者简介:
段向阳：男，1973年生，研究方向为无线通信新技术，6G总体技术规划等

辛雨：男，1976年生，博士，研究方向为6G物理层关键技术等

暴桐：女，1992年生，硕士，研究方向为太赫兹场景新波形及调制技术等

华健：男，1991年生，硕士，研究方向为高频场景相位噪声及低峰均比方案等

通讯作者:
暴桐　bao.tong@zte.com.cn

中图分类号: TN928
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- 被引次数: 0
出版历程
- 收稿日期: 2020-04-03
- 修回日期: 2020-10-20
- 网络出版日期: 2020-11-07
- 刊出日期: 2021-01-15

A Candidate Waveform Scheme for High-Frequency Scenarios

1.
State Key Laboratory of Mobile Network and Mobile Multimedia Technology, Shenzhen 518000, China
2.
ZTE Corporation, Shenzhen 518000, China

Funds: The Key-Area Research and Development Program of Guangdong Province (2019B010157001)

摘要

摘要: 针对高频场景(>52.6 GHz)面临的主要问题：路径损耗比较大、功率放大器的效率比较低和相位噪声比较高等，该文设计了一种高频场景候选波形方案。该候选波形方案包括基本符号结构的增强设计、发射端和接收端结构的增强设计，以及尾部序列长度可变方案设计等。相比于5G现有波形DFT-s-OFDM，该文提出的高频场景候选波形方案具有更高的频谱效率。仿真结果显示该候选波形方案具有峰均比低、相位噪声估计效果好和带外泄漏小等优点。
- 无线通信 /
- 高频场景 /
- 候选波形 /
- 频谱效率 /
- 峰均比 /
- 相位噪声
Abstract: A candidate waveform scheme is designed to deal with the main problems in the high-frequency scenarios (>52.6 GHz) such as relatively large path loss, low efficiency of power amplifier and high phase noise. This candidate waveform scheme designs the enhanced fundamental symbol structure, the enhanced transmitter and the receiver structure, and tail sequence length variable schemes. Compared with the 5G waveform DFT-s-OFDM, the proposed candidate waveform scheme improves the spectrum efficiency. The simulation results show that the candidate waveform scheme has lower peak-to-average power ratio, better phase noise estimation and compensation effect, and lower out-of-band leakage.
- Wireless communication /
- High frequency scenario /
- Candidate waveform /
- Spectral efficiency /
- Peak-to-average power ratio /
- Phase noise

HTML全文

图 1 5G NR现有的波形DFT-s-OFDM和高频场景候选波形时域数据的基本符号结构

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图 2 高频场景候选波形的发射端、接收端结构的增强设计

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图 3 上行链路尾部序列(S1)长度可变方案

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图 4 下行链路尾部序列(S1)长度可变方案

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图 5 高频场景候选波形(E DFT-s-OFDM)与5G现有波形DFT-s-OFDM的PAPR性能比较

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图 6 高频场景候选波形(E DFT-s-OFDM)与5G现有波形DFT-s-OFDM的BLER性能比较

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图 7 高频场景候选波形(E DFT-s-OFDM)与5G现有波形DFT-s-OFDM的PSD比较

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表 1 仿真参数

参数	DFT-s-OFDM	E DFT-s-OFDM
调制方案	π/2 BPSK
FFT点数	288
IFFT点数	4096
DMRS	ZC Sequence(ZadOff-Chu Sequence)
(S2, S1)序列长度	无(有CP)	(6,14)
FDSS	无或者根升余弦滤波器，滚降因子：0.3	根升余弦滤波器，滚降因子：0.3

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表 2 仿真参数

参数	取值
参数	DFT-s-OFDM	E DFT-s-OFDM
天线	SISO(Single Input Single Output)
载频	60 GHz
编码调制方案	LDPC(Low Density Parity Check, CodeRate=1/2), 16QAM
子带带宽	24 RB(12 subcarriers per Resource Block)
子载波间隔	960 kHz
FFT大小	4096
信道类型	TDL-A(延时扩展: 10 ns，多普勒频移: 10 Hz)
CP长度	0.037 μs
(S2和S1)序列长度	无(有CP)	(6,14)
DMRS	ZC Sequence(ZadOff-Chu Sequence)
PTRS	时域密度为1；有4组PTRS，每组含有2个样点	无
FDSS	根升余弦滤波器，滚降因子：0.3

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