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1. Introduction DMRS (Demodulation Reference Signals) are UE-specific reference signals in 5G NR that provide essential channel...

Introduction In 5G NR, Radio Network Temporary Identifiers (RNTIs) are pivotal for distinguishing UEs (User Equipments), groups of UEs,...

Introduction   What is PUCCH in 5G NR? The Physical Uplink Control Channel (PUCCH) in 5G New Radio (NR) is the channel through which the...

Introduction At its core, frequency domain resource allocation involves dividing the available radio spectrum into smaller, manageable...

1. Introduction to HARQ HARQ  (Hybrid Automatic Repeat reQuest) is a critical error control method used in wireless systems like LTE and...

In LTE and 5G NR Random Access Channel (RACH) procedure, the gNB extracts specific UE identities from Msg3 to construct Msg4 (Contention...

Introduction The Random Access CHannel (RACH) procedure is the gateway to the 5G Standalone (SA) network. It allows the User Equipment...

In a 5G SA network, when the User Equipment (UE) powers on, it must detect, synchronize with, and evaluate a serving cell before...

Introduction 5G New Radio (NR) introduces flexible spectrum utilization across Frequency Division Duplex (FDD) and Time Division Duplex...

Introduction The O-RAN Alliance Workgroup 4 (WG4) focuses on defining open fronthaul interfaces between the O-DU (Distributed Unit) and...

The Physical Downlink Control Channel (PDCCH) is a cornerstone of 5G New Radio (NR) and 4G Long-Term Evolution (LTE) systems, serving as...

Introduction The Synchronization Signal Block (SSB) is a fundamental component of 5G New Radio (NR) systems, enabling user equipment (UE)...