International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / To achieve good efficiency in a space-based radio transmitter, its final amplifier must be operated
near the saturation point, in its nonlinear region. Because of strict band limitations, this nonlinear
operation is combined with the problem of intersymbol interference. Normally, these problems are
addressed using a combination of equalization and power back-off, resulting in reduced power
efficiency. Many proposed receiver-based methods, such as Volterra equalization, attempt to
compensate for the nonlinearity and ISI in a single block before the detector, allowing higher
efficiency operation, but introducing a great deal of complexity. We propose a receiver-based
method in which the two effects are dealt with in separate blocks, an equalizer and a linearizer,
resulting in considerable simplification. We go further and place the detector before the linearizer,
achieving improved performance by eliminating the errors introduced by the linearizer. Simulation
results compare favorably with the performance of a linear AWGN channel.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/605571 |
| Date | 10 1900 |
| Creators | Lyman, Raphael J., Wang, Qingsong |
| Contributors | New Mexico State University |
| Publisher | International Foundation for Telemetering |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Proceedings |
| Rights | Copyright © International Foundation for Telemetering |
| Relation | http://www.telemetry.org/ |
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