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oai:kanazawa-u.repo.nii.ac.jp:00007813 2024-06-20T06:12:17Z 934:935:936

24- and 120-chanell transmultiplexers built with new digital signal processing LSI's Maruta, Rikio Kanemasa, Akira Sakaguchi, Hisashi Hibino, Masao 00207945 Nakayama, Kenji Two new digital transmultiplexers intended for commerical use have been developed. One transmultiplexer performs a bilateral conversion between two 12-channel FDM group signals and a 24-channel PCM carrier signal. The other mutually connects two 60-channel FDM supergroup signals and five 24-channel or four 30-channel PCM signals. Both exploit a block processing digital SSB-FDM multiplex/demultiplex scheme employing a cascade of an FFT processor and a set of complex coefficient digital filters. They have been built using newly developed high-level DSP LSI chips. Algorithmic considerations, developed LSI architecture, and equipment configuration are described as well as digital processor design details and measured performance. 金沢大学大学院自然科学研究科情報システム 金沢大学工学部 Institute of Electrical and Electronics Engineers (IEEE) 1982-07-01 2017-10-03 eng journal article VoR http://hdl.handle.net/2297/3952 https://kanazawa-u.repo.nii.ac.jp/records/7813 https://doi.org/10.1109/tcom.1982.1095612 0090-6778 IEEE Transactions on Communications COM-30 (7 pt 1) 30 7 1528 1539 https://kanazawa-u.repo.nii.ac.jp/record/7813/files/TE-PR-NAKAYAMA-K-1528.pdf application/pdf 887.0 kB 2017-10-03