Efficient Use of Mobile Radio Channels
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This paper deals with GMSK and 4-Level FSK modulation schemes which are adopted in the land mobile services. The analysis of group delay interaction has been carried out by approximative mathematical reflections. Better spectral efficiency, achieved together with keeping up good energetic efficiency, can be the result of the above analysis. Many current and proposed mobile data transfer applications would provide a better service, and be more spectrally efficient, if the data rates could be increased.
Keywordsgroup delay, phase characteristic, channel capacity, channel spacing, adjacent channel selectivity, modulation speed, BER, bit error rate, linearity, spectral efficiency, root-raised-cosine, GMSK, Gaussian minimum shift keying, FSK, frequency shift keying
Document typePeer reviewed
Document versionFinal PDF
SourceRadioengineering. 1998, vol. 7, č. 3, s. 20-23. ISSN 1210-2512
- 1998/3