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Advanced Groupband Data Modem Using Orthogonally Multiplexed QAM Technique | IEEE Journals & Magazine | IEEE Xplore

Advanced Groupband Data Modem Using Orthogonally Multiplexed QAM Technique


Abstract:

An advanced groupband data modem based on the orthogonally multiplexed QAM technique is proposed. Its performance is evaluated through experiments. In the proposed modem,...Show More

Abstract:

An advanced groupband data modem based on the orthogonally multiplexed QAM technique is proposed. Its performance is evaluated through experiments. In the proposed modem, data are transmitted by a number of orthogonally multiplexed parallel subchannels. Because of this orthogonally multiplexing parallelism, the proposed modem becomes more immune to Gaussian noises, impulsive noises, and channel distortions, compared to the conventional Class IV partial response VSB modem. Furthermore, the orthogonally multiplexed QAM modem retains high flexibility in multiplexing a variety of data terminals and in carrying out fallback operation to a wide range of data rates. Experimental results demonstrate the robustness of the proposed groupband data modem.
Published in: IEEE Transactions on Communications ( Volume: 34, Issue: 6, June 1986)
Page(s): 587 - 592
Date of Publication: 30 June 1986

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