Abstract:

5G will need to be able to support much larger connections of communication devices and meet the requirements of diverse scenarios.However，this requirement cannot be met by OFDM（orthogonal frequency division multiplexing）due to its own drawbacks.As an alternative approach to OFDM，OQAM-OFDM （offset quadrature amplitude modulation based orthogonal frequency division multiplexing）adopts a prototype filter that is well localized in frequency domain，which makes OQAM-OFDM quite suitable for 5G.The OQAM-OFDM system was briefly introduced，then，its superiority employed in 5G was deeply discussed.Finally，some key technical issues of OQAM-OFDM for application in 5G were summarized，such as tail shortening.

Key words: OQAM-OFDM, OFDM, prototype filter, tail shortening 刘光海, 肖天, 李贝, 程新洲, 薛永备, 李一, 朱小萌, 郑雨婷. 4G载波向5G重耕之前的5G业务覆盖能力研究 [J]. 电信科学, 2023, 39(3): 115-123. 巩传兵, 杨明帅, 吴松, 葛海平, 张守国, 刘磊, 祁云山, 徐辉. 基站价值评估模型的应用研究 [J]. 电信科学, 2023, 39(1): 100-107. 张孟哲, 夏宜君. 5G在工业领域的应用现状、问题及推广建议 [J]. 电信科学, 2023, 39(1): 126-135. 马洪源, 周维, 付艳, 邵永平, 黎丹. 蜂窝物联网核心网目标架构演进探讨 [J]. 电信科学, 2023, 39(1): 153-161. 孙鹏飞, 林立, 司哲. 5GtoB规模复制方法论及标准化能力构建 [J]. 电信科学, 2022, 38(Z1): 3-10. 潘峰, 刘嘉薇. 我国5GtoB应用发展演进及展望 [J]. 电信科学, 2022, 38(Z1): 11-16. 郑师应, 李源, 杨博涵, 马帅, 肖善鹏. 5G+行业现场网技术与产业发展综述 [J]. 电信科学, 2022, 38(Z1): 17-27. 李珊, 刘嘉薇. 5G行业应用规模化发展阶段与分析方法探析 [J]. 电信科学, 2022, 38(Z1): 28-35. 于青民, 黄颖, 汪卫国, 张倩. “5G+工业互联网”行业应用综述 [J]. 电信科学, 2022, 38(Z1): 36-42.