The implementation is described of a programmable digital signal processor based system, designed for use as a test bed in the development of a digital modem, codec, and channel simulator. Code was written to configure the system as a 5600 bps or 6600 bps QPSK modem. The test bed is currently being used in an experiment to evaluate the performance of digital speech over shadowed channels in the Australian mobile satellite (MOBILESAT) project
Economical operation of future satellite systems for mobile communications can only be fulfilled by ...
The fantastic growth in communication systems points to the fact that human beings need to exchange ...
This study addresses three modulation schemes capable of increasing the voice channel capacity of th...
This paper describes a modem which has been developed and implemented using a digital signal process...
The engineering development study to follow was written to address the need for a Programmable Rate ...
The thesis is concerned with the design of a phase-shift keying system for a digital modem, operatin...
A major goal of the Mobile Satellite Experiment (MSAT-X) program at the Jet Propulsion Lab (JPL) is ...
This paper describes the real-time digital implementation of an 8-differentiated phase-shift keying ...
As mobile satellite communications systems evolve over the next decade, they will have to adapt to a...
The paper describes a carrier recovery loop for the coherent demodulation of a digital satellite mod...
The choice of modulation format for a mobile satellite service is complex. The subjective performanc...
The proposed Australian Mobilesat system will provide a range of circuit switched voice/data service...
An architecture and a hardware prototype of a flexible trellis modem/codec (FTMC) transmitter are pr...
Nowadays, due to cost savings, flexibility orimprovement of service quality, modern communicati...
The paper studies a digital satellite modem for mobile systems. The modem transmits a convolutionall...
Economical operation of future satellite systems for mobile communications can only be fulfilled by ...
The fantastic growth in communication systems points to the fact that human beings need to exchange ...
This study addresses three modulation schemes capable of increasing the voice channel capacity of th...
This paper describes a modem which has been developed and implemented using a digital signal process...
The engineering development study to follow was written to address the need for a Programmable Rate ...
The thesis is concerned with the design of a phase-shift keying system for a digital modem, operatin...
A major goal of the Mobile Satellite Experiment (MSAT-X) program at the Jet Propulsion Lab (JPL) is ...
This paper describes the real-time digital implementation of an 8-differentiated phase-shift keying ...
As mobile satellite communications systems evolve over the next decade, they will have to adapt to a...
The paper describes a carrier recovery loop for the coherent demodulation of a digital satellite mod...
The choice of modulation format for a mobile satellite service is complex. The subjective performanc...
The proposed Australian Mobilesat system will provide a range of circuit switched voice/data service...
An architecture and a hardware prototype of a flexible trellis modem/codec (FTMC) transmitter are pr...
Nowadays, due to cost savings, flexibility orimprovement of service quality, modern communicati...
The paper studies a digital satellite modem for mobile systems. The modem transmits a convolutionall...
Economical operation of future satellite systems for mobile communications can only be fulfilled by ...
The fantastic growth in communication systems points to the fact that human beings need to exchange ...
This study addresses three modulation schemes capable of increasing the voice channel capacity of th...