Synthesis of High Data Rate Coherent Telemetry Systems
International Telemetering Conference Proceedings / October 08-11, 1968 / Ambassador Hotel, Los Angeles, California === For high data rate telemetry (above 100 Mbits/sec) multiphase modulation effectively trades transmitter power to alleviate the RF bandwidth requirements. This paper presents a unif...
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| Language: | en_US |
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International Foundation for Telemetering
1968
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| Online Access: | http://hdl.handle.net/10150/606543 http://arizona.openrepository.com/arizona/handle/10150/606543 |
| Summary: | International Telemetering Conference Proceedings / October 08-11, 1968 / Ambassador Hotel, Los Angeles, California === For high data rate telemetry (above 100 Mbits/sec) multiphase modulation effectively trades transmitter power to alleviate the RF bandwidth requirements. This paper presents a unified method of synthesizing and analyzing multiphase systems. In particular, the design of multiphase modulators and three types of coherent demodulators are discussed in detail. Included is a description of 400 Mbits/sec quadriphase system fabricated by TRW which employs direct modulation and demodulation of an 8.5 GHz carrier and a transversal filter to effect matched data filtering. This system operates within 2.5 db of theoretical performance of coherent quadriphase. |
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