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The 5G/6G Blog

Engineer-grade articles on 5G NR, RAN design, channel coding, and emerging 6G technologies. Grounded in 3GPP specs, written for practitioners.

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Featured ยท 5G Performance

5G NR Data Rate Calculation โ€” Step by Step

Calculate the theoretical maximum 5G throughput from first principles. From a single PRB with QPSK to 12-layer MU-MIMO at 6.4 Gbps โ€” understand exactly how 3GPP defines the data rate formula and every parameter in it.

๐Ÿ“… December 31, 2022 ยท โฑ 6 min read ยท 5G NR ยท MIMO ยท OFDM Read Article โ†’
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5G Physical Layer

Rate-Matching in 5G: What & Why?

How 5G maps exactly the right number of encoded bits to available radio resources through repetition, puncturing, and bit interleaving. Covers 3GPP TS 38.212 Section 5.4.

Rate Matching Channel Coding 3GPP
๐Ÿ“… Jan 3, 2023 ยท 5 min Read โ†’
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RAN Architecture

RAN 7.3 Functional Split โ€” Deep Dive

The 7.3 split places modulation/demodulation near the antenna, transmitting hard bits DL and soft LLRs UL. Learn the fronthaul capacity formulas and trade-offs vs. split 7.2x and Option 8.

Open RAN Fronthaul O-DU
๐Ÿ“… Dec 29, 2022 ยท 4 min Read โ†’
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5G Physical Layer

Scrambling in 5G โ€” What and Why?

After channel encoding, 5G scrambles bits with a unique pseudo-random sequence per channel, per UE, per cell โ€” suppressing interference and adding coding gain. The full C_init story explained.

Scrambling PDSCH PBCH
๐Ÿ“… Aug 24, 2022 ยท 4 min Read โ†’
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