Abstract
This chapter reviews the fundamental results of coding and modulation theory that are essential to a full understanding of spread-spectrum systems. Channel codes, which are also called error-correction or error-control codes, are vital in fully exploiting the potential capabilities of spread-spectrum communication systems. Although direct-sequence systems greatly suppress interference, practical systems require channel codes to limit the effects of the residual interference and channel impairments, such as fading. Frequency-hopping systems are designed to avoid interference, but the possibility of hopping into an unfavorable spectral region usually requires a channel code to maintain adequate performance. In this chapter, coding and modulation theory are used to derive the required receiver computations and the error probabilities of the decoded information bits.
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Torrieri, D. (2018). Channel Codes and Modulation. In: Principles of Spread-Spectrum Communication Systems. Springer, Cham. https://doi.org/10.1007/978-3-319-70569-9_1
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DOI: https://doi.org/10.1007/978-3-319-70569-9_1
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