Modulation Schemes for Wireless Access
Four modulation schemes, namely minimum shift keying (MSK), Gaussianminimum shift keying (GMSK), multiamplitude minimum shift keying(MAMSK) and À/4 differential quadrature phase shift keying (À/4-QPSK)are described and their applicability to wireless access is discussedin the paper. Low complexi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Spolecnost pro radioelektronicke inzenyrstvi
2000-12-01
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| Series: | Radioengineering |
| Online Access: | http://www.radioeng.cz/fulltexts/2000/00_04_08_14.pdf |
| _version_ | 1811195838143135744 |
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| author | F. Vejrazka G. Kandus T. Javornik |
| author_facet | F. Vejrazka G. Kandus T. Javornik |
| author_sort | F. Vejrazka |
| collection | DOAJ |
| description | Four modulation schemes, namely minimum shift keying (MSK), Gaussianminimum shift keying (GMSK), multiamplitude minimum shift keying(MAMSK) and À/4 differential quadrature phase shift keying (À/4-QPSK)are described and their applicability to wireless access is discussedin the paper. Low complexity receiver structures based on differentialdetection are analysed to estimate the performance of the modulationschemes in the additive Gaussian noise and the Rayleigh and Riceenvelope fast fading channel. The bandwidth efficiency is calculated toevaluate the modulation schemes. The results show that the MAMSK schemegives the greatest bandwidth efficiency, but its performance in theRayleigh channel is rather poor. In contrast, the MSK scheme is lessbandwidth efficient, but it is more resistant to Rayleigh fading. Theperformance of À/4-QPSK signal is considerably improved by appropriateprefiltering. |
| first_indexed | 2024-04-12T00:49:10Z |
| format | Article |
| id | doaj.art-64656cc284e5499eb725d8eae70254a3 |
| institution | Directory Open Access Journal |
| issn | 1210-2512 |
| language | English |
| last_indexed | 2024-04-12T00:49:10Z |
| publishDate | 2000-12-01 |
| publisher | Spolecnost pro radioelektronicke inzenyrstvi |
| record_format | Article |
| series | Radioengineering |
| spelling | doaj.art-64656cc284e5499eb725d8eae70254a32022-12-22T03:54:46ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122000-12-0194814Modulation Schemes for Wireless AccessF. VejrazkaG. KandusT. JavornikFour modulation schemes, namely minimum shift keying (MSK), Gaussianminimum shift keying (GMSK), multiamplitude minimum shift keying(MAMSK) and À/4 differential quadrature phase shift keying (À/4-QPSK)are described and their applicability to wireless access is discussedin the paper. Low complexity receiver structures based on differentialdetection are analysed to estimate the performance of the modulationschemes in the additive Gaussian noise and the Rayleigh and Riceenvelope fast fading channel. The bandwidth efficiency is calculated toevaluate the modulation schemes. The results show that the MAMSK schemegives the greatest bandwidth efficiency, but its performance in theRayleigh channel is rather poor. In contrast, the MSK scheme is lessbandwidth efficient, but it is more resistant to Rayleigh fading. Theperformance of À/4-QPSK signal is considerably improved by appropriateprefiltering.www.radioeng.cz/fulltexts/2000/00_04_08_14.pdf |
| spellingShingle | F. Vejrazka G. Kandus T. Javornik Modulation Schemes for Wireless Access Radioengineering |
| title | Modulation Schemes for Wireless Access |
| title_full | Modulation Schemes for Wireless Access |
| title_fullStr | Modulation Schemes for Wireless Access |
| title_full_unstemmed | Modulation Schemes for Wireless Access |
| title_short | Modulation Schemes for Wireless Access |
| title_sort | modulation schemes for wireless access |
| url | http://www.radioeng.cz/fulltexts/2000/00_04_08_14.pdf |
| work_keys_str_mv | AT fvejrazka modulationschemesforwirelessaccess AT gkandus modulationschemesforwirelessaccess AT tjavornik modulationschemesforwirelessaccess |