WebSC-FDMA信号可以在时域生成,也可以在频域生成。 处于和下行链路的兼容考虑,LTE选择了在频域生成 SC-FDMA技术,即DFT-S-OFDM(Discrete Fourier Transform-Spread OFDM)技术。 该技术是在 OFDM的IFFT调制之前对信号进行DFT扩展,这样系统发射的是时域信号,从而可以避免OFDM系统发送频域信号 带来的PAPR问题。 WebThe biggest difference between NR and LTE is that NR can use CP-OFDM for Uplink as well as DFT-s-OFDM depending on use case. Whether you use CP-OFDM or DFT-s-OFDM can be configurable except msg3 by …
再看看DFT-S-OFDM 和CP-OFDM - 知乎 - 知乎专栏
http://www.enabbr.net/61443.html Single-carrier FDMA (SC-FDMA) is a frequency-division multiple access scheme. It is also called linearly precoded OFDMA (LP-OFDMA). Like other multiple access schemes (TDMA, FDMA, CDMA, OFDMA), it deals with the assignment of multiple users to a shared communication resource. SC-FDMA can be … See more The transmission processing of SC-FDMA is very similar to that of OFDMA. For each user, the sequence of bits transmitted is mapped to a complex constellation of symbols (BPSK, QPSK, or M-QAM). Then different … See more 1. Low PAPR (crest factor) 2. Low sensitivity to carrier frequency offset 3. Less sensitive to non-linear distortion and hence, it allows the use of low-cost … See more • Carrier interferometry • 3GPP Long Term Evolution • OFDMA • Time-division multiple access See more iron mountain online billing
US Patent for Generating wireless reference signals in a different ...
Web英语缩略词“OFDMA”经常作为“Orthogonal Frequency Division Multiple Access”的缩写来使用,中文表示:“正交频分多址”。本文将详细介绍英语缩写词OFDMA所代表英文单词,其对应的中文拼音、详细解释以及在英语中的流行度。此外,还有关于缩略词OFDMA的分类、应用领域及相关应用示例等。 Web现代移动通信 第5版习题答案chapter_13-2024_试卷_2024 WebFeb 19, 2024 · 相对来讲,在 lte 上行使用的傅里叶变换扩展 ofdm 波形(dft-s-ofdm)则兼具单载波和多载波波形的优点而显得更为优越。 2.1.2 波形实现方式总结 版权声明: 本文内容由阿里云实名注册用户自发贡献,版权归原作者所有,阿里云开发者社区不拥有其著作 … iron mountain paper shredding services