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http://dx.doi.org/10.7840/kics.2013.38A.1.79

Performance of CEFSK Systems in Nonlinear Channel Environments  

Lee, Kee-Hoon (공군사관학교 전자전산학과)
Choi, Byeong-Woo (삼성전자 무선사업부 한국개발팀)
Shin, Kwan-Ho (국방과학연구소)
Seo, Jong-Soo (연세대학교 전기전자공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38A, no.1, 2013 , pp. 79-87 More about this Journal
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 1.2dB and 0.8dB at BER of $1{\times}10^{-4}$ when input back-off (IBO) of HPA is -1.0dB and -3.0dB, respectively. For the same channel environment with multi-channel, 1DD-CEFSK outperforms 1DD-GFSK by 1.1dB in SNR, regardless of the value of IBO.
Keywords
CEFSK; GFSK; Nonlinearly Amplified Channel;
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  • Reference
1 "ETRI Tech Review 2012," Radio & Satellite Commun., ETRI, part 3, section 2, pp. 92-93, Aug. 2012.
2 M. Orra, "Study on the simulation and analysis of an FH/FDMA OBP satellite based mobile communication system under critical channel impairment," Dissertation, Univ. of Toledo, Aug. 2010.
3 K. Murota and K. Hirade, "GMSK modulation for digital mobile radio telephony," IEEE Trans. Comm., vol. COM-29, no. 7, pp. 1044-1050, Jul. 1981.
4 Mathiopoulos, P. T. and Toor, J. S., "Effects of ACI and nonlinearities on the performance of differential detected GMSK signals," IEEE Proc.-Commun., vol. 151, no. 2, pp. 163-169, Apr. 2004.   DOI   ScienceOn
5 K. H. Lee and J. S. Seo, "Correlative encoded FSK (CEFSK) modulation technique," JCN, vol. 6, no. 1, pp. 34-36, Mar. 2004.
6 C. H. Park, J. H. Paik, Y-H You, M-C Ju, J-W Cho, "Channel estimation and DC-offset compensation schemes for frequency-hopped bluetooth networks," IEEE Commun. Lett., vol. 5, no. 1, pp. 4-6, Jan. 2001.   DOI   ScienceOn
7 J. S. Seo and K. Feher, "SQAM : a new superposed QAM modem technique," IEEE Trans. Comm., vol. COM-33, no. 3, pp. 298-300, Mar. 1985.
8 I. K. Park and J. S. Seo, "Compact-SQAM for bandwidth efficient digital radio system," J. KICS, vol. 18, no. 4, pp. 519-527, Apr. 1993.
9 Adel and A. M. Saleh, "Frequency independent and frequency dependent nonlinear models of TWT amplifiers," IEEE Trans. Commun., vol. COM-29, no. 11, pp. 1715-1720, Nov. 1981.
10 T. Aulinn and C. E. W. Sundberg, "Continuous phase modulation-part I : full response signaling," IEEE Trans. Commun., vol. COM-29, no. 3, pp. 196-209, Mar. 1981.