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# System prepended metadata

title: IVC 5G O-RAN Summary
tags: [UNILA]

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# IVC 5G O-RAN Summary

###### tags: `UNILA`



#  Summary 6 : Baseband Technology (5G NR Physical Layer Design)

Nama 		: Hans Khalif Hafif
Student ID	: 1915031078
Team 		: A-3

5G targets three main use cases with distinct connectivity requirements:
• enhanced mobile broadband (eMBB)
• massive machine type communications (mMTC) 
• ultra-reliable low latency communications (URLLC)
➢ also called as critical machine type communications (cMTC)

![](https://i.imgur.com/clQGYdX.jpg)


The key technology components of the NR physical layer are: 
 1. Waveform 
2. modulation 
3. Multiantenna transmission (MIMO) 
4. Channel coding

• 5G still use OFDM-based modulation as in LTE – OFDMA 
– CP-OFDMA 
– SC-FDMA 
• NR supports QPSK, 16 QAM, 64 QAM and 256 QAM  modulation formats for both uplink and downlink, as in LTE. – 256QAM : is used to support higher data rate transmission
• π/2-BPSK : standard BPSK signal by multiplying the symbol  sequence with a rotating phasor with phase increments per  symbol period of π/2 
– To reduce peak-to-average power ratio  
– To enhanced power amplifier efficiency at lower data rates,  which is important for mMTC services.











