A novel zero-IF binary FSK demodulation scheme

Zengmao Chen; Gong Cheng; Zhiguo Sun; Xiaoyan Ning; Xiaolin Zhang; Rongchen Sun

doi:10.1117/12.2558022

3 January 2020 A novel zero-IF binary FSK demodulation scheme

Zengmao Chen, Gong Cheng, Zhiguo Sun, Xiaoyan Ning, Xiaolin Zhang, Rongchen Sun

Proceedings Volume 11373, Eleventh International Conference on Graphics and Image Processing (ICGIP 2019); 1137332 (2020) https://doi.org/10.1117/12.2558022
Event: Eleventh International Conference on Graphics and Image Processing, 2019, Hangzhou, China

Abstract

Compared with the superheterodyne transceivers, zero-intermediate frequency (IF) transceivers have simpler structure and lower power consumption. Moreover, communication signals can be processed digitally with a sampling rate equaling to the signal bandwidth before transmission or reception. Binary frequency shift keying (2FSK), as a type of binary single-carrier modulation with excellent anti-interference performance, can also be transmitted or received via a zero-IF structure. Therefore, broadband or frequency hopping 2FSK transceivers can be realized easily in baseband. The traditional zero-IF 2FSK signal demodulation-phase demodulation has a simple structure, but its anti-noise performance is poor due to the unused priori information. In this paper, both coherent and non-coherent demodulation schemes are proposed for zero-IF 2FSK. Mathematical derivations and numerical simulation results show the bit error rate (BER) performance of coherent demodulation of zero-IF 2FSK is 3dB better than that of bandpass 2FSK.

Citation Download Citation

Zengmao Chen, Gong Cheng, Zhiguo Sun, Xiaoyan Ning, Xiaolin Zhang, and Rongchen Sun "A novel zero-IF binary FSK demodulation scheme", Proc. SPIE 11373, Eleventh International Conference on Graphics and Image Processing (ICGIP 2019), 1137332 (3 January 2020); https://doi.org/10.1117/12.2558022

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