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http://dx.doi.org/10.5762/KAIS.2011.12.1.493

Constant-Amplitude Multi-Code Trans-Orthogonal Modulation  

Hong, Dae-Ki (Department of Information and Telecommunication Eng., SangMyung University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.1, 2011 , pp. 493-499 More about this Journal
Abstract
To improve the bandwidth efficiency of conventional orthogonal modulation, the MCTO(Multi-Code Trans-Orthogonal) modulation, which is modified orthogonal modulation, was proposed. However, the RF(Radio Frequency) power amplifier for the MCTO modulation is too complex to reject the amplitude distortion due to the non-constant amplitude property of the MCTO. Therefore, in this paper, CAMCTO(constant-amplitude multi-code trans-orthogonal) modulation is proposed by using the constant-amplitude encoding algorithm for multi-code signal. Additionally, the performance of the proposed CAMCTO modulation is compared with those of the orthogonal modulation and the MCTO modulation by using the computer simulation. The computer simulations show that the bandwidth efficiency of the proposed CAMCTO modulation is better than that of the conventional orthogonal modulation.
Keywords
MCTO; CAMCTO; Bandwidth Efficiency; modulation; RF; Power Amplifier;
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Times Cited By KSCI : 2  (Citation Analysis)
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