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O-RAN


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
1 day ago9 min read


Cloud & NFV(Network Function Virtualization) for 5G Networks
1.Introduction Cloud and Network Function Virtualization (NFV) for 5G networks represent a fundamental shift in how telecommunication networks are designed and managed. NFV decouples network functions from specialized hardware, allowing them to run as software on standard cloud infrastructure. This virtualization enables 5G networks to be more flexible, scalable, and cost-efficient by leveraging cloud-native principles and automation. It allows operators to dynamically alloca
Venkateshu Kamarthi
Dec 6, 20259 min read


RAN Intelligence with xApps and rApps
1. Introduction Radio Access Networks are becoming more software-driven, disaggregated, and automation-centric. To handle the complexity of dense deployments, Massive MIMO, spectrum fragmentation, and diverse traffic profiles, operators are moving toward intelligent control loops in the RAN.This is where O-RAN Alliance’s RAN Intelligent Controller (RIC) architecture—featuring rApps (non-real time, >1 second) and xApps (near-real time, 10 ms–1 s)—comes into play. These applica
Venkateshu Kamarthi
Nov 21, 202518 min read


5G gNB CU/DU/RU Split Architecture & Interfaces
1) Introduction The 5G NR gNB split architecture divides the base station into functional entities — Central Unit (CU) , Distributed Unit (DU) , and Radio Unit (RU) — to optimize deployment flexibility, scalability, and performance. This functional split enables c entralized control and distributed radio processing, allowing operators to balance latency-sensitive tasks at the edge (DU/RU) with higher-layer functions centralized (CU). The split reduces fronthaul bandwidth dem
Venkateshu Kamarthi
Nov 13, 202515 min read
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