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Pikus, Marcin; Wen Xu
IEEE communications letters, 2017-Sept., 2017-9-00, Letnik: 21, Številka: 9Journal Article
A routine to parallelize and increase the throughput of fixed length distribution matching with non-binary output alphabet is presented. The routine performs parallel distribution matchings with binary output alphabets, and then maps the binary output streams to symbols from the primary, non-binary alphabet. Fixed length distribution matching is essential for probabilistically shaped coded modulation (PSCM), such as the probabilistic amplitude shaping (PAS). In the PAS setup, the novel bit-level distribution matcher achieves similar rate-versus-SNR performance as the symbol-level constant composition distribution matcher, thus providing a high throughput solution for PSCM.
