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Integrated dsp/rf design for an msat transmitter
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Cavers, J. K. Stapleton, S. P. |
| Copyright Year | 1990 |
| Description | In mobile radio systems, the relatively inefficient use of the spectrum by existing Frequency Modulation (FM) techniques is limiting the available channels. Linear modulation methods are thought to provide the necessary push into more efficient usage of the spectrum. The limitation, to date, of the linear modulation techniques is the fact that the nonlinear power amplifier tends to spread the spectrum and thus offset any spectrum efficiency advantage. Linearization techniques are presently being investigated, in the literature, in order to recover some of the lost spectrum, due to spreading. To this end, digital signal processing (DSP) techniques are thought to provide real time predistortion methods. Some of the complex modulation blocks, normally confined to analog circuitry, are being implemented using DSP circuitry. This paper will address the linearization techniques, for mobile satellite (MSAT) transceivers, that use an integrated DSP/radio frequency design. |
| File Size | 416432 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920014877 |
| Archival Resource Key | ark:/13960/t3jx38p5q |
| Language | English |
| Publisher Date | 1990-01-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Transmitter Receivers Frequency Modulation Spread Spectrum Transmission Real Time Operation Radio Frequencies Transmitters Power Amplifiers Digital Techniques Signal Processing Nonlinearity Channels Data Transmission Msat Linearization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
