Title :
Efficient and simple hardware realization for broadband GMSK-modulators using PLD-technology to enable MPEG2-transmissions in a standard TV-channel
Author :
Heiner, Christoph
Author_Institution :
Fac. of Electr. Eng., Bergische Univ., Wuppertal, Germany
Abstract :
In this paper a cost- and space-reducing hardware realization of a broadband GMSK coder is described by using off-the-shelf PLD-technology. This flexible technology allows the realization of a coder that can process input datarates from a few hundred Kbit/s up to 8 Mbit/s by simply changing the following local elements: the low-cost crystal-oscillator and the output lowpass-filter. The second part of this paper describes a method which has not been realized in hardware yet. A quadrature modulation of the GMSK baseband spectrum by purely using simple digital techniques is presented
Keywords :
data compression; digital television; minimum shift keying; modulators; programmable logic devices; video coding; 8 Mbit/s; GMSK baseband spectrum; MPEG2-transmissions; PLD technology; broadband GMSK coder; broadband GMSK modulators; cost-reducing realization; digital techniques; flexible technology; hardware realization; low-cost crystal oscillator; output lowpass filter; quadrature modulation; space-reducing realization; standard TV-channel; Bandwidth; Baseband; Code standards; Communication standards; Frequency modulation; Hardware; Low pass filters; Modulation coding; Read only memory; Voltage-controlled oscillators;
Conference_Titel :
Devices, Circuits and Systems, 2000. Proceedings of the 2000 Third IEEE International Caracas Conference on
Conference_Location :
Cancun
Print_ISBN :
0-7803-5766-3
DOI :
10.1109/ICCDCS.2000.869886
