Kasun Maduranga Silva Thotahewa

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With the increasing use of wireless capsule endoscopy (WCE) devices in healthcare, it is of utmost importance to analyze the electromagnetic power absorption and thermal effects caused by in-body propagation of wireless signals from these devices. This paper studies the path loss, specific absorption rate (SAR), specific absorption (SA), and temperature(More)
With the extensive use of wireless devices within or at close proximity to the human body, electromagnetic effects caused by the interaction between RF waves and human tissues need to be considered with paramount importance. The ultra-wideband (UWB) communication spectrum has recently been utilized in bio-telemetry applications, such as neural recording,(More)
Ultra-wide band (UWB) is gaining popularity as a physical layer technique for low power and high data rate wireless applications. Currently most wireless body area network (WBAN) platforms are based on narrowband wireless technology such as ZigBee and Bluetooth. This paper presents hardware implementation of impulse radio ultra-wide band (IR-UWB) based(More)
The basic requirement of wireless healthcare monitoring systems is to send physiological signals acquired from implantable or on-body sensor nodes to a remote location. Low-power consumption is required for wireless healthcare monitoring systems since most medical sensor nodes are battery powered. The emergence of new technologies in measuring physiological(More)
Ultra Wide Band (UWB) can be considered as a lucrative wireless technology for Wireless Body Area Network (WBAN) applications that demand for power stringent operation, high data rate and low form factor. The main drawback of the UWB technology is its receiver complexity. In order to overcome this barrier, this paper presents an implementation of a WBAN(More)
Wireless body area network (WBAN) applications benefit extensively from the advantages offered by unique features of ultra-wideband (UWB) wireless communication, such as high data rate, low power consumption, and simple transmitter design. A major disadvantage in using UWB for WBAN applications is the complexities introduced by UWB receivers, such as high(More)
Performance of an Impulse Radio-Ultra Wide Band (IR-UWB) transmission system largely depends on the characteristics of UWB pulses such as rise time, pulse width and pulse repetitive frequency (PRF). This paper studies the IR-UWB pulse generation using direct modulation method for low-power sensor network applications. Effect of important pulse properties on(More)
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