| Autor: |
Hao Wu, Huayong Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 7, Pp 185373-185384 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2019.2960839 |
| Popis: |
Quasi-cyclic low-density parity-check (QC-LDPC) codes are the choice for data channels in the fifth generation (5G) new radio (NR). At the transmitter side, code bits from the QC-LDPC encoder are delivered to the rate matcher. The task of the rate matcher is to select an appropriate number of code bits via puncturing and/or repetition. Code bits that are not selected do not need to be encoded. At the receiver side, the de-rate matcher combines code bits of different transmission attempts and sends them to the QC-LDPC decoder. The output of the QC-LDPC decoder only needs to include necessary systematic bits. Unnecessary systematic bits and parity bits can be completely removed from the decoding process. Taking these considerations into account, a smaller sub-base matrix instead of a full-base matrix can be used in the encoding and decoding process. In this paper, we propose an efficient implementation of QC-LDPC codes for 5G NR. The full-base matrix is pruned before being used. Compared to the traditional schemes, the proposed scheme improves the throughput of QC-LDPC codes in 5G NR. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
