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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zhou, Y. McLane, P.J. Loo, C. |
| Copyright Year | 2004 |
| Description | Author affiliation: Dept. of Electr. & Comput. Eng., Queen's Univ., Kingston, Ont., Canada (Zhou, Y.; McLane, P.J.) |
| Abstract | Digital satellite communication has been restricted to date to digital modulations having an efficiency of 2 bps/Hz; that is, filtered-QPSK with a close to constant envelope. The main limitation to higher-order digital modulations is the need for linearity of a high power amplifier in both the satellite and the terminal. Many years ago, C.M. Thomas et al. (see IEEE Trans. Commun., vol.COM-22, p.168-80, 1974) conducted a complete study of the use of higher-order linear modulations on nonlinear satellite channels. However, pulse-shaping and predistortion were not treated. We consider these items for amplitude-phase-shift-keying (APK) modulation, that is, signal points assigned on concentric circles. We consider both single- and double-link channels. Our best result is for a single-link channel and (5,11)-APK (5 points on an inner circle and 11 on the other), which, for predistortion on the nonlinear channel, loses only about 1 dB to 16-QAM transmission on the linear channel. Our results for single-link, narrow band channels are felt to be generally applicable to narrowband wireless communication channels. |
| Starting Page | 1197 |
| Ending Page | 1204 |
| File Size | 500430 |
| Page Count | 8 |
| File Format | |
| ISBN | 0780382552 |
| ISSN | 15502252 |
| DOI | 10.1109/VETECS.2004.1389022 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-05-17 |
| Publisher Place | Italy |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Power amplifiers Satellite communication Digital modulation Predistortion Narrowband Digital filters Linearity High power amplifiers Pulse amplifiers Amplitude modulation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Electrical and Electronic Engineering Computer Science Applications |
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