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Bandwidth Efficient Coded Modulation

In: Channel Coding Techniques for Wireless Communications

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  • K. Deergha Rao

    (Osmania University, Research and Training Unit for Navigational Electronics, College of Engineering)

Abstract

The block codes, convolutional, and turbo codes discussed in the previous chapters achieve performance improvement expanding the bandwidth of the transmitted signal. However, when coding is t p being applied to bandwidth limited channels, coding gain is to be achieved without signal bandwidth expansion. The coding gain for bandwidth limited channels can be achieved by a scheme called trellis coded modulation (TCM). The TCM is a combined coding and modulation technique that increases the number of signals over the corresponding uncoded system to compensate for the redundancy introduced by the code for digital transmission over band-limited channels.

Suggested Citation

  • K. Deergha Rao, 2015. "Bandwidth Efficient Coded Modulation," Springer Books, in: Channel Coding Techniques for Wireless Communications, edition 127, chapter 0, pages 209-250, Springer.
    • Handle: RePEc:spr:sprchp:978-81-322-2292-7_7
    DOI: 10.1007/978-81-322-2292-7_7
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