Abstract
This paper presents a comparative analysis of Bit error rate performance of Minimum Shift Keying (MSK) and Gaussian Minimum Shift Keying in demodulated signal in the presence of Additive White Gaussian Noise (AWGN). The filters used for performance comparison are Gaussian and Raised cosine filters. BER is analyzed by varying the Eb/No. The characteristics of MSK consist of invariable envelope, spectrally efficient suppression of out‐of‐band interference. GMSK is the most widely linked with the GSM mobile communications system where it proved to be an effective form of modulation and demodulation. GMSK modulation is based on MSK, which is itself a form of continuous-phase frequency-shift keying. One of the problems with standard forms of PSK is that sidebands extend out from the carrier. To overcome this, MSK and its derivative GMSK can be used. The simulation results in the paper show the graphical analysis of the curves for BER with the presence of noise and from the simulated result, the performance of Gaussian filter in MSK shows better performance than other filters.
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