High-speed QPSK modulator and demodulator with subharmonic pumping
| Autor: | Michael J. Gans, R. Trambarulo, Martin Victor Schneider |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
Pseudorandom number generator
Physics Radiation Data stream mining business.industry Local oscillator Circuit design Low-pass filter Electrical engineering Word error rate Schottky diode Code rate Condensed Matter Physics Cascade Hardware_INTEGRATEDCIRCUITS Electronic engineering Demodulation Optoelectronics Electrical and Electronic Engineering High-pass filter business Phase-shift keying Electronic circuit |
| Zdroj: | IEEE Transactions on Microwave Theory and Techniques. 36:1714-1719 |
| ISSN: | 1557-9670 0018-9480 |
| DOI: | 10.1109/22.17404 |
| Popis: | A high-speed quadrature-phase-shift-keying (QPSK) modulator-demodulator is described. Both units are pumped with a common 6.5-GHz local oscillator giving a modulated carrier at 13 GHz. The performance of each unit was evaluated and adjusted to give satisfactory performance with a single tuning element in the local oscillator circuits. Bit error rates were measured for transmission of pseudorandom data streams through the modulator-demodulator pair. Typical operating conditions and bit error rates for the combination are summarized. Data can be transmitted and recovered at speeds up to a total information rate of 3.6 Gb/s with an error rate less than 10/sup -11/. > |
| Databáze: | OpenAIRE |
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