I wrote a summary of CW (Cambridge Wireless) TEC conference here a couple of months back. The last session was on "Getting ready for Beyond-5G Era". Matthew Baker, Head of Radio Physical Layer & Co-existence Standardization, Nokia Bell Labs was one of the speakers. His talk provided a summary of 3GPP Rel-15 and then gave a nice and short summary of all the interesting things coming in Rel-16 and being planned for Rel-17. The slides from his presentation is embedded below:
Nokia also created a short video where Matthew talks about these new features. It's embedded below:
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5G/NR Channel Codes Evolution Consideration and 3GPP Recommendation on Polar Codes. In order to meet higher data rates and more diverse requirements of typical NR scenarios including eMBB, mMTC, and URLLC, a powerful and flexible channel coding scheme is one of the fundamental components of the NR access technology. In the recent RAN1# discussion, various channel coding schemes were discussed and 3GPP considered convolutional codes, turbo codes, polar codes and LDPC codes for evaluation.
3GPP has adopted Polar Coding for 5G/NR Uplink/Downlink control channel for eMBB. To improve the performance of polar coding, concatenated coding and combined decoding schemes are proposed.
What is Polar Codes?
Polar codes can asymptotically (for code length going to infinity) achieve the capacity of any binary input symmetric memoryless channel with encoding and decoding complexity of the order O(N log N), where N is the code length. At present they are the only class of channel codes that are provably capacity achieving with an explicit construction.
Types of Polar Codes for 5G/NR
To improve the performance of Polar codes, some concatenated coding and combined decoding schemes are proposed.
CRC-concatenated Polar codes (CA-Polar Code) with single-parity-check code concatenation and multi CRC-concatenation
Parity-check concatenated Polar code (PC-Polar Code)
5G/NR Channel Codes Evolution Consideration and 3GPP Recommendation on Polar Codes
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