Performance of CEFSK Systems in Nonlinear Channel Environments 


Vol. 38,  No. 1, pp. 79-87, Jan.  2013


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  Abstract

A new modulation technique - correlative encoded FSK (CEFSK) - for use in power and bandwidth limited digital communication system is proposed. CEFSK is free of ISI and generates output signals which have a smooth and continuous phase transition and a reduced envelope fluctuation by keeping correlation between amplitude and phases of two subsequent symbols. In comparison to conventional one-bit differential detected (1DD) GFSK, the performance of the 1DD-CEFSK in a non-linearly amplified (NLA) channel impaired by additive white Gaussian noise (AWGN), ISI and IM, is analyzed via computer simulation. The simulation result shows that, in an NLA single-channel, 1DD-CEFSK provides a signal-to-noise ratio (SNR) advantage of up to 1.2㏈ and 0.8㏈ at BER of 1×10<SUP>-4</SUP> when input back-off (IBO) of HPA is ?1.0㏈ and ?3.0㏈, respectively. For the same channel environment with multi-channel, 1DD-CEFSK outperforms 1DD-GFSK by 1.1㏈ in SNR, regardless of the value of IBO.

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  Cite this article

[IEEE Style]

K. Lee, B. Choi, K. Shin, J. Seo, "Performance of CEFSK Systems in Nonlinear Channel Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 1, pp. 79-87, 2013. DOI: .

[ACM Style]

Kee-Hoon Lee, Byeong-Woo Choi, Kwan-Ho Shin, and Jong-Soo Seo. 2013. Performance of CEFSK Systems in Nonlinear Channel Environments. The Journal of Korean Institute of Communications and Information Sciences, 38, 1, (2013), 79-87. DOI: .

[KICS Style]

Kee-Hoon Lee, Byeong-Woo Choi, Kwan-Ho Shin, Jong-Soo Seo, "Performance of CEFSK Systems in Nonlinear Channel Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 1, pp. 79-87, 1. 2013.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880