LTE RACH in DetailsRACH stands for Random Access Channel. This is the first message from UE to eNB when you power it on. Even though they use a little bit different name, in all cellular technology (CDMA, GSM, WCDMA, LTE) there is a specific signal that perform the same function. In...
chatTechnote About 3GPP Guru LTE UE Category NR Power Class 5G(NR) FRC LTE LTE Adv 5G/NR 6G NTN 2G/3G LTE - M1 NB-IoT IoT IMS/SIP Throughput TechSlide WiFi SDR Comm. Tech. RF AI/ML/LLM Embedded Sys IP/Network Linux MechEngneering ...
当我们谈到通信技术时,就离不开2G、3G、LTE(4G)、5G、6G、WIFI等,而伴随的还有NB-IoT、IoT、SDR、RF...。 登录sharetechnote.com/网站后,就进入如下图所示的页面,这一看就是搞技术的人员在维护,满页充满着干货的信息。 最上边几栏给出了检索的关键字,根据你的需要,去检索即可。然后会在下方的左边给出检...
5G中的调制映射,相对于LTE,增加了Π/2-BPSK和256QAM。 在预编码时,需要注意预编码矩阵与各层和天线端口对应。 由于涉及多天线MIMO,层映射和时频资源映射也比较重要。 最后,通过DFT变换做频域扩展,经过IFFT转为时域符号,经过上变频和DAC转换,通过天线将信号发射出去。 本文到此结束,更多内容,请移步ShareTechnote。
(NOTE : There was no corresponding states in LTE, but Rrc Inactive status is added to LTE from Release 16).To me, RRC INACTIVE state is similar to the combination of FACH and PCH in UMTS. Actually Use case of INACTIVE state is almost same as FACH/PCH in UMTS. ...
通信技术学习神器推荐:ShareTechnote 常规CP,参数集=1: 常规CP,参数集=2: 常规CP,参数集=3: 常规CP,参数集=4: 扩展CP,参数集=2: 再例如,我们去查阅关于PUSCH的内容: PUSCH传输过程: 当你把传输块数据从CRC校验一直做到物理资源映射(PRB),加上OFDM符号生成,比特级和符号级处理基本就完成了。
5G NR: Measurement Configuration - How LTE Stuff Works? https://www.3gpp.org› tsg_ran › Inbox › Drafts 3GPP Change Request https://www.etsi.org TS 138 331 - V15.2.1 - 5G; NR - ETSI TS 138 331 - V15.3.0 - 5G; NR - ETSI ...
网站是2012年创立的，但是上面的帖子应该是不同的工程师提交的。总之，这是个牛人，sharetechnote是个...
Notebook PC shipments declined just 7% in the third quarter of 2023 versus the same period a year ago, the first time the markets' decline has slowed to single-digit percentage points since the first quarter of 2022. Notebook shipments totaled 51.3 million units. Although demand, particularly ...
Notebook PC shipments declined -13% in the second quarter of 2023 versus the same period a year ago and totaled 47.6 million. While the PC market has continued to contract versus its high point during the COVID era, there are early signs of stabilization. Importantly, the notebook PC ...