Project Office CPMSE Wisesense Gmb H Sennheiser electronic
Project Office C-PMSE • Wisesense Gmb. H | Sennheiser electronic Gmb. H & Co. KG c-pmse. research-project. de • info@c-pmse. research-project. de C-PMSE – Improving frequency utilization and coexistence for PMSE systems by cognitive procedures Demonstration 5: Transmit power control behavior Dr. Radu Circa Robert Bosch Gmb. H A research project in co-operation of industry and science
C-PMSE Demonstration Workshop, 29. 05. 2013, Berlin Power Control Implementation Two use cases are covered in the demonstration • Interference generated by a white space device • Interference caused by collocated C-PMSE intermodulation The reasoning algorithm is deterministic, based on the link quality assessment. Genetic algorithm optimization using frequency and power as adjustment parameters dramatically increases the complexity of the system. Using power and frequency control simultaneously opens the possibility to use also intermodulation frequencies as transmission channels. Increase in the spectrum usage efficiency. 29. 05. 2013 Dr. Radu Circa (Robert Bosch Gmb. H) C-PMSE Project Office • c-pmse. research-project. de • info@c-pmse. research-project. de | Wisesense Gmb. H | Sennheiser electronic Gmb. H & Co. KG 3
C-PMSE Demonstration Workshop, 29. 05. 2013, Berlin Reverse Intermodulation Distortion • The power amplifier of the microphone transmitter may produce intermodulation distortion due to the received signal in the transmit antenna 29. 05. 2013 Dr. Radu Circa (Robert Bosch Gmb. H) C-PMSE Project Office • c-pmse. research-project. de • info@c-pmse. research-project. de | Wisesense Gmb. H | Sennheiser electronic Gmb. H & Co. KG 4
C-PMSE Demonstration Workshop, 29. 05. 2013, Berlin Power Control Loop • The output power of each C-PMSE transmitter will be adjusted during the operation as to keep the optimal signal-to-interference ratio. • Minimizing the output power of each transmitter is desired in order to keep the interference levels as low as possible. 29. 05. 2013 Dr. Radu Circa (Robert Bosch Gmb. H) C-PMSE Project Office • c-pmse. research-project. de • info@c-pmse. research-project. de | Wisesense Gmb. H | Sennheiser electronic Gmb. H & Co. KG 5
C-PMSE Demonstration Workshop, 29. 05. 2013, Berlin Power Agile Microphone based on REV-WT Based on original Microphones Bosch (Electro-Voice) REV-WT Control parameter Power agile Modulation FM RF Range 722 – 746 MHz RF step size - RF output power -13 … +17 d. Bm Power step size 3 d. B Control channel Bluetooth 29. 05. 2013 Dr. Radu Circa (Robert Bosch Gmb. H) C-PMSE Project Office • c-pmse. research-project. de • info@c-pmse. research-project. de | Wisesense Gmb. H | Sennheiser electronic Gmb. H & Co. KG 6
C-PMSE Demonstration Workshop, 29. 05. 2013, Berlin Scenario I: White Space Device Interference White space device interferes with C-PMSE device 29. 05. 2013 Dr. Radu Circa (Robert Bosch Gmb. H) C-PMSE Project Office • c-pmse. research-project. de • info@c-pmse. research-project. de | Wisesense Gmb. H | Sennheiser electronic Gmb. H & Co. KG 7
C-PMSE Demonstration Workshop, 29. 05. 2013, Berlin Scenario II: Collocated C-PMSE Intermodulation C-PMSE intermodulation interference on collocated microphone 29. 05. 2013 Dr. Radu Circa (Robert Bosch Gmb. H) C-PMSE Project Office • c-pmse. research-project. de • info@c-pmse. research-project. de | Wisesense Gmb. H | Sennheiser electronic Gmb. H & Co. KG 8
C-PMSE Demonstration Workshop, 29. 05. 2013, Berlin C-PMSE Future Developments Digital transmission schemes Multidimensional solution generation (frequency, power, modulation scheme) Signal detection and classification Learning algorithms 29. 05. 2013 Dr. Radu Circa (Robert Bosch Gmb. H) C-PMSE Project Office • c-pmse. research-project. de • info@c-pmse. research-project. de | Wisesense Gmb. H | Sennheiser electronic Gmb. H & Co. KG 9
C-PMSE Demonstration Workshop, 29. 05. 2013, Berlin Questions? Project Website www. c-pmse. research-project. de Acknowledgement The C-PMSE project is co-funded by the German Federal Ministry of Economics and Technology (BMWi) 29. 05. 2013 Dr. Radu Circa (Robert Bosch Gmb. H) C-PMSE Project Office • c-pmse. research-project. de • info@c-pmse. research-project. de | Wisesense Gmb. H | Sennheiser electronic Gmb. H & Co. KG 10
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