ABSTRACT
This chapter provides a short introduction to wireless wearable communication systems. Transmitting and receiving information in microwave frequencies is based on electromagnetic wave propagation. Wireless wearable communication systems operate in the vicinity of the human body. The electromagnetic spectrum of wireless wearable communication systems corresponds to electromagnetic waves from the meter range to the centimeter wave range to date. However, there are some new designs in the mm wave rage. Noise limits a system's ability to process weak signals. System dynamic range is defined as the system's capability to detect weak signals in the presence of large-amplitude signals. The link budget determines if the received signal is larger than the receiver sensitivity. The link budget must account for effective transmission power. Path loss is a reduction in the signal's power, which is a direct result of the distance between the transmitter and the receiver in the communication path.
