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LDPC Coding in 5G NR
1. Introduction Channel coding is one of the most fundamental building blocks of the 5G NR physical layer. It directly determines: Block Error Rate (BLER) Throughput at high MCS Latency predictability UE power consumption Hardware scalability in gNB and UE Unlike LTE, which relied almost exclusively on Turbo codes, 5G NR deliberately replaced Turbo codes with Low Density Parity Check (LDPC) codes for data channels and Polar codes for control channels. LDPC Coding Chain in 5

Venkateshu Kamarthi
Jan 159 min read


RRC_INACTIVE State in 5G NR
1. Introduction The RRC_INACTIVE state represents a fundamental architectural innovation in 5G New Radio (NR), introduced to address critical latency and signaling overhead challenges that plagued LTE networks. In LTE, frequent transitions between RRC_IDLE and RRC_CONNECTED states created substantial network signaling load and introduced latency penalties during service resumption, particularly problematic for modern smartphone usage patterns characterized by frequent sm

Venkateshu Kamarthi
Nov 29, 202511 min read


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

Venkateshu Kamarthi
May 19, 20255 min read


Reconfigurable Intelligent Surfaces (RIS) vs. Massive MIMO in 6G
Introduction As the wireless industry looks beyond 5G, 6G networks are expected to revolutionize not only connectivity speeds but also...

Venkateshu Kamarthi
May 9, 20256 min read


Orbital Angular Momentum (OAM) Multiplexing for 6G
Introduction As 6G research gathers momentum, the demand for higher data rates, massive connectivity, and extreme spectral efficiency is...

Venkateshu Kamarthi
Apr 18, 20254 min read
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