基于CP-free OFDM的上行SCMA收发机设计和性能分析

周立; 刘喜庆

doi:10.11959/j.issn.1000-0801.2021132

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基于CP-free OFDM的上行SCMA收发机设计和性能分析

专题：5G+6G | 更新时间：2024-06-05

- 基于CP-free OFDM的上行SCMA收发机设计和性能分析
- Transceiver design and performance analysis for uplink SCMA based on CP-free OFDM
- 电信科学 2021年37卷第6期页码：23-32
- 作者机构：
- 作者简介：
  
  [ "周立（1997- ），男，北京邮电大学信息与通信工程学院硕士生，主要研究方向为新型无线多址接入" ]
  [ "刘喜庆（1985- ），男，博士，北京邮电大学信息与通信工程学院副研究员、博士生导师，主要研究方向为干扰消除、多址接入、多天线技术" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(61901315)
- DOI：10.11959/j.issn.1000-0801.2021132
  中图分类号： TN929.5
- 网络出版日期：2021-06，
  
  纸质出版日期：2021-06-20
- 稿件说明：
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周立, 刘喜庆. 基于CP-free OFDM的上行SCMA收发机设计和性能分析[J]. 电信科学, 2021,37(6):23-32.

Li ZHOU, Xiqing LIU. Transceiver design and performance analysis for uplink SCMA based on CP-free OFDM[J]. Telecommunications science, 2021, 37(6): 23-32.
周立, 刘喜庆. 基于CP-free OFDM的上行SCMA收发机设计和性能分析[J]. 电信科学, 2021,37(6):23-32. DOI： 10.11959/j.issn.1000-0801.2021132.

Li ZHOU, Xiqing LIU. Transceiver design and performance analysis for uplink SCMA based on CP-free OFDM[J]. Telecommunications science, 2021, 37(6): 23-32. DOI： 10.11959/j.issn.1000-0801.2021132.

摘要

典型稀疏码分多址（sparse code multiple access，SCMA）系统采用带循环前缀（cyclic prefix，CP）的OFDM实现抗多径衰落无线传输，其容量受限于CP开销。针对此问题，提出了一种基于时域预编码的稀疏码分多址（time domain precoding-OFDM SCMA，TDP-OFDM SCMA）上行接入方案。给出了发射机、接收机的主要结构并进行不同信道、不同过载率和不同信道估计误差下的系统容量以及误比特率性能仿真，最后对TDP-OFDM SCMA信号的功率效率展开了分析。仿真结果表明：在相同过载率下，TDP-OFDM SCMA系统容量较CP-OFDM SCMA最高可提升25%。

Abstract

A typical sparse code multiple access (SCMA) system utilizes orthogonal frequency division multiplexing (OFDM) technology with cyclic prefix (CP) to combat multipath fading in wireless channels.Therefore

its capacity is reduced by the CP-insertion.To address this issue

the SCMA scheme based on CP-free OFDM using the time domain precoding (TDP) algorithm was proposed and the proposed scheme was termed as TDP-OFDM SCMA.The transceiver structure was designed

and the capacity plus the bit error rate (BER) performances under various channels with different overload rates and with channel estimation errors were evaluated via the simulations.Also

the power consumption problem in TDP-OFDM SCMA was discussed.The simulation results show that under the same overload rate

the capacity of TDP-OFDM SCMA can be increased by up to 25% if compared with the SCMA based on CP-OFDM.

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references

易芝玲 , 王森 , 韩双锋 , 等 . 从5G到6G的思考:需求、挑战与技术发展趋势 [J ] . 北京邮电大学学报 , 2020 , 43 ( 2 ): 1 - 9 .

YI Z L , WANG S , HAN S F , et al . From 5G to 6G:require-ments,challenges and technical trends [J ] . Journal of Beijing University of Posts and Telecommunications , 2020 , 43 ( 2 ): 1 - 9 .

田飞燕 , 陈晓明 , 钟财军 , 等 . 6G 蜂窝物联网的大规模接入技术 [J ] . 物联网学报 , 2020 , 4 ( 1 ): 92 - 103 .

TIAN F Y , CHEN X M , ZHONG C J , et al . Massive access technology in 6G cellular Internet of Things network [J ] . Chi-nese Journal on Internet of Things , 2020 , 4 ( 1 ): 92 - 103 .

王健 , 杨闯 , 闫宁宁 . 面向 B5G 和 6G 通信的数字孪生信道研究 [J ] . 电波科学学报 : 1 - 8 .

WANG J , YANG C , YAN N N . Study on digital twin channel for the B5G and 6G communication [J ] . Chinese Journal of Ra-dio Science : 1 - 8 .

彭木根 , 孙耀华 , 王文博 . 智简6G无线接入网:架构、技术和展望 [J ] . 北京邮电大学学报 , 2020 , 43 ( 3 ): 1 - 10 .

PENG M G , SUN Y H , WANG W B . Intelligent-concise radio access networks in 6G:architecture,techniques and insight [J ] . Journal of Beijing University of Posts and Telecommunications , 2020 , 43 ( 3 ): 1 - 10 .

肖子玉 . 面向2030的未来网络关键技术综述:Beyond 5G [J ] . 电信科学 , 2020 , 36 ( 9 ): 114 - 121 .

XIAO Z Y . A review of key technologies for the future of the 2030 network—Beyond 5G [J ] . Telecommunications Science , 2020 , 36 ( 9 ): 114 - 121 .

魏克军 , 胡泊 . 6G 愿景需求及技术趋势展望 [J ] . 电信科学 , 2020 , 36 ( 2 ): 126 - 129 .

WEI K J , HU B . 6G vision requirements and technology trend prospect [J ] . Telecommunications Science , 2020 , 36 ( 2 ): 126 - 129 .

周洋程 , 闫实 , 彭木根 . 意图驱动的6G无线接入网络 [J ] . 物联网学报 , 2020 , 4 ( 1 ): 72 - 79 .

ZHOU Y C , YAN S , PENG M G . Intent-driven 6G radio access network [J ] . Chinese Journal on Internet of Things , 2020 , 4 ( 1 ): 72 - 79 .

WANG Y F , ZHANG X J , ZHOU S D , et al . User detection and channel estimation for SCMA uplink system in dispersive channel [C ] // Proceedings of 2016 IEEE International Conference on Communication Systems (ICCS) . Piscataway:IEEE Press , 2016 : 1 - 5 .

JUN W , ZHAO H , PENG Y X , et al . A novel codeword grouped SCMA [C ] // Proceedings of 2015 IEEE 6th International Symposium on Microwave,Antenna,Propagation,and EMC Technologies (MAPE) . Piscataway:IEEE Press , 2015 : 753 - 758 .

KANG G M , KIM H M , SHIN Y , et al . Message passing algorithm based on QR decomposition for an SCMA system with multiple antennas [C ] // Proceedings of 2017 International Conference on Information and Communication Technology Convergence (ICTC) . Piscataway:IEEE Press , 2017 : 941 - 944 .

HOSHYAR R , WATHAN F P , TAFAZOLLI R . Novel low-density signature for synchronous CDMA systems over AWGN channel [J ] . IEEE Transactions on Signal Processing , 2008 , 56 ( 4 ): 1616 - 1626 .

LI Z Y , CHEN W , WEI F , et al . Joint codebook assignment and power allocation for SCMA based on capacity with Gaussian input [C ] // Proceedings of 2016 IEEE/CIC International Conference on Communications in China (ICCC) . Piscataway:IEEE Press , 2016 : 1 - 6 .

HAN S , HUANG Y T , MENG W X , et al . Optimal power allocation for SCMA downlink systems based on maximum capacity [J ] . IEEE Transactions on Communications , 2019 , 67 ( 2 ): 1480 - 1489 .

CHENG M , WU Y Q , CHEN Y . Capacity analysis for non-orthogonal overloading transmissions under constellation constraints [C ] // Proceedings of 2015 International Conference on Wireless Communications ＆ Signal Processing (WCSP) . Piscataway:IEEE Press , 2015 : 1 - 5 .

XIAO K X , XIA B , CHEN Z Y , et al . On capacity-based codebook design and advanced decoding for sparse code multiple access systems [J ] . IEEE Transactions on Wireless Communications , 2018 , 17 ( 6 ): 3834 - 3849 .

LIU X Q , CHEN H H , WANG X , et al . Time domain precoding for OFDM/OFDMA systems without cyclic prefix [J ] . IEEE Transactions on Vehicular Technology , 2018 , 67 ( 6 ): 5510 - 5514 .

LIU X Q , CHEN H H , CHEN S Y , et al . Symbol cyclic-shift equalization algorithm—a CP-free OFDM/OFDMA system design [J ] . IEEE Transactions on Vehicular Technology , 2017 , 66 ( 1 ): 282 - 294 .

LIU T T , LI X M , QIU L . Capacity for downlink massive MIMO MU-SCMA system [C ] // Proceedings of 2015 International Conference on Wireless Communications ＆ Signal Processing (WCSP) . Piscataway:IEEE Press , 2015 : 1 - 5 .

3GPP . Evolved universal terrestrial radio access,base station radio transmission and reception:TS 36.104 [S ] . 2011 .

WANG X B , HO P , WU Y . Robust channel estimation and ISI cancellation for OFDM systems with suppressed features [J ] . IEEE Journal on Selected Areas in Communications , 2005 , 23 ( 5 ): 963 - 972 .

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