Abstract
Waveform coding is a form of channel coding where a set of waveforms is transformed into a set of orthogonal waveforms, so that the detection process has fewer errors. This chapter presents a method of waveform coding, based on orthogonal codes. In the proposed method, the high-speed data stream is inverse multiplexed into several parallel streams. These parallel streams, now reduced in speed, are grouped into a number of subsets and mapped into a predetermined group of biorthogonal codes and modulated by a bank of modulators using the same carrier frequency. This methodology substantially reduces the required number of waveforms and enhances transmission efficiency. It is also shown that there is a built-in error control mechanism in this scheme. The proposed method is cost-effective and bandwidth efficient.
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References
Sklar B (1988) Digital communications fundamentals and applications. Prentice Hall, Englewood Cliffs
Faruque S (1999) Battlefield wideband transceivers based on combined N-ary orthogonal signaling and M-ary PSK modulation. SPIE proceedings, vol 3709 “Digitization of the Battle Space 1V”, pp 123–128
Faruque S et al (2001) Broadband wireless access based on code division parallel access. US Patent No. 6208615, 27 Mar 2001
Faruque S et al (2001) Bi-orthogonal code division multiple access system. US Patent No. 6198719, 6 Mar 2001
Walsh JL, Walsh JL (1923) A closed set of normal orthogonal functions. Am J Math 45(1):5–24
IS-95 Mobile station – base station compatibility standard for dual mode wide band spread spectrum cellular systems. TR 55, PN-3115, 15 Mar 1993.
Yang SC (1998) CDMA RF system engineering. Artech House, Boston
Garg VK (1999) IS-95 CDMA and cdma 2000. Prentice Hall, Englewood Cliffs
Faruque, S. (2003) Code division multiple access cable modem. US Patent No. 6647059, Nov 2003
Faruque S (1996) Cellular mobile systems engineering. Artec House, Boston. ISBN 0-89006-518-7
Faruque S (2004) Broadband communications based on Code Division Parallel Access (CDPA). International Engineering Consortium (IEC), Annual Review of Communications, vol 57, ISBN: 1-931695-28-8
Ungerboeck G (1982) Channel coding with multilevel/multiphase signals. IEEE Trans Inf Theory IT28:55–67
Saleh F, Shams F, William S (2013) Orthogonal on-off keying (O3K) for free-space laser communications with ambient light compensation. SPIE Opt Eng 52(9), 096113, Lasers, Fiber Optics, and Communications, 2013(Published)
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Faruque, S. (2016). Waveform Coding. In: Radio Frequency Channel Coding Made Easy. SpringerBriefs in Electrical and Computer Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-21170-1_5
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DOI: https://doi.org/10.1007/978-3-319-21170-1_5
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