METHOD FOR DEMODULATION AND DEMODULATOR
Wireless transfer of data is increasing continuously. Accordingly the demand for energy is increasing on both sides: sender and receiver.
For keeping the infrastructure for telecommunication running in Germany 40 TWh of energy will be necessary in 2015 whereas in 2012 the demand of energy was as low as 10 TWH. Simi- lar problems need to be faced on the receiver side. The run time of cell phones is decreasing significantly with increasing data load. Especially as more complex methods for signal treat- ment are necessary. For the release of the 5G standard in 2020 the data transfer is expected to increase by a factor of 1000. If the energy consumption would grow by the same factor the concept of the cell phones would collapse. Hence, there is an urgent need for new concepts with low energy consumption.
The present invention addresses the AD-converter in the receiver which is in respect to po- wer consumption a highly crucial component. By reducing the resolution down to 1 bit and simultaneously improving the signal-to-noise ratio by about 20% the new demodulator con- cept offers a cost and power efficient design for the RF front-end.
Figure: Analog radio front-end with with overdemodulation improving SNR by about 20%.
(1) Manuel Stein et.al., 10.1109/LWC.2015.2388675