Power Efficient Communication for Medical Wireless Sensor Networks

TL;DRAbstract

The thesis introduces a low complexity, power efficient communication system based on joint source-channel coding principle for medical wireless sensor networks. The design of the communication system relies on the separation theorem by C. Shannon where there exists a binary interface between the source coding and channel coding. Nevertheless, the well-structured attribute of the source coder is carefully taken into account when designing the channel coding part, and in return the channel quality is used to design the source coding. In particular, the source coder produces a binary source sequence which can be divided into different layers, and each layer requires a certain level of protection when transmitting over the channel. The unequal level of protection can be implemented either by allocating unequal power or by unequal transmission rate. To keep the source coder at low complexity level and to have scalable property, the compression efficiency of the source coder must be sacrifi

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