S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Electrical and Computer Engineering (전기·정보공학부) Journal Papers (저널논문_전기·정보공학부)
Fractionally-spaced differential detection of GFSK signals with small h
- Hong, Sukkyun; Lee, Yong-Hwan
- Issue Date
- IEICE Trans. Commun., vol.E84-B, no.12, pp.3226-3234, Dec. 2001
- GFSK; direct conversion; frequency offset compensation; differential detection; small modulation index
- A digital noncoherent demodulation scheme is presented for receptioon of Gaussian frequency shift keying(GFSK) signals with small modulation index. The proposed differential demodulator utilizes oversampled signals to estimate the symbol timing and to compensate the frequency offset. The performance of prorposed teceiver is evaluated in terms of the bit error rate(BER). Numerical result show that the proposed demodulator provides peerformance comparable to that of conventional baseband differential demodulator, while significantly reducing the implementation complexity suitable for single chip integration with direct conversion radio frequency module. Finally the performance of the proposed receiver is improved by adding a simple decision feedback module.
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