Abstract
Super-regenerative receiver is one of the potential candidates to achieve ultra low power wireless communication in body area network (BAN). The main limitations of the super-regenerative receiver include the difficulty in choosing a good quench waveform to optimize its sensitivity and selectivity, and its significantly degraded performance in the presence of interference. To address the above problems, we first propose a novel quench waveform search algorithm providing good sensitivity and selectivity results. The algorithm avoids the undesirable manual calibration and hence suitable for autonomous operation. In addition, we consider the spectrum sensing algorithm to autonomously avoid data transmission in the presence of unacceptable interferences. The above algorithms enabling autonomous operation of the super-regenerative receiver are implemented in hardware. Our measurement results show that by using the quench waveform calibrated super-regenerative receiver, the system can provide stable probability or mis-detection and probability of false alarm results in different carrier frequencies. This is very desirable for the determination of a good threshold in spectrum sensing. Together with our previously reported chip designed for the super-regenerative receiver, we have developed an autonomously operating super-regenerative receiver based wireless system, which is ideal for many BAN applications.
Original language | English |
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Title of host publication | 2012 6th International Symposium on Medical Information and Communication Technology, ISMICT 2012 |
Place of Publication | Piscataway |
Publisher | Institute of Electrical and Electronics Engineers |
Number of pages | 4 |
ISBN (Electronic) | 978-1-4673-1236-3 |
ISBN (Print) | 978-1-4673-1234-9 |
DOIs | |
Publication status | Published - 2 Jul 2012 |
Externally published | Yes |
Event | 2012 6th International Symposium on Medical Information and Communication Technology, ISMICT 2012 - La Jolla, CA, United States Duration: 25 Mar 2012 → 29 Mar 2012 |
Conference
Conference | 2012 6th International Symposium on Medical Information and Communication Technology, ISMICT 2012 |
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Country/Territory | United States |
City | La Jolla, CA |
Period | 25/03/12 → 29/03/12 |
Keywords
- BAN
- spectrum sensing
- successive approximation register
- super-regenerative receiver
- ultra low power